I like leaving some marginal gains on the table so I can then surprise myself with how fast I am when there's an event. That's why I ride most days in a retro jersey. It makes an Assos skinsuit that much faster on the day when you put it on.
I think you’re headed in the right direction with the nutrition video this week and the tech guest. Obviously, you have a big fewer bass and a lot of us are well past the more basic videos, and would like to hear about more in-depth topics that would help us go faster/farther
I have to start watching Josh. He’s just saying ”X actually works”. Finally someone who won’t think I’m insane for wanting a 500€ upgrade which has as much of a gain as skipping out on eating that extra spoonful of yoghurt.
Regarding the point that aero gains don't matter for slow riders, there is also the aspect of the watts you need to increase your speed by 1 km/hour, which is much lower at low speeds. So you gain fewer watts at lower speeds, but you also need less power to ride faster. Therefore, aero gains are as important for less powerful riders as for pros. Maybe this makes it in the next video about aero gains
🤑 As athletes existing in a marketing-heavy sport, it’s easy to lose sight of the forest for the trees. We understand that marginal gains are “worth it,” but it’s important to remember that 70-80% of the system’s drag comes from the rider, so the most cost effective way to improve cycling efficiency is to improve your CdA through proper bike fit and spending time training in aerodynamic positions.
Blow the marginal gains in speed, I'm 68 and suffered badly from road buzz in my hands, wrists and feet whilst running v good 25mm tyres at 110 psi, because of GCN I changed said tyres to 28mm same brand, added latex inner tubes dropped pressure to 60 psi to find I can ride all day without pain and discomfort - that's not marginal - that's almost life changing . Thank you guys
The groundspeed vs airspeed thing is SO huge. I live in Kansas and dealing with crazy wind day in day out. Even on my commuter bike, making some aero tweaks (trunk bag vs panniers) makes a huge difference in terms of overall speed and effort.
If I was in any way working for a team partaking in Roubaix, I would absolutely advocate for the use of tireliners. You'd be a sucker if you didn't use them. And because of that, I would not want to make them mandatory, because I wouldn't want to take away a chance for my competitors to make a rookie mistake in not using them...
On the Ridley bike, the decals were applied to protect the white base coat paint before spraying the purple, actually they were "masks" not "decals". The masks were then removed revealing the white base coat paint and finished with clear coat.
Facing my out of square bb shell without the professional tool fixed a terrible cartridge square taper bb from day 1. 8200 miles terrible tight and rough. If I were concerned with marginal gains I wouldn't ride a track bike as a road bike. Clip on tri bars definitely went beyond marginal gain territory.
Tubeless tubulars are a product made by challenge ( not tufo ) These are just tubulars with a latex coated inner. So tubulars can be made without an inner tube and they can be ran with sealant. I guess since its from challenge they will not be as slow as tufo tires. Since those tufo tirs have never been fast! However I see no point in running these tubeless tubulars either.
Hey Josh thanks for maybe helping develop the Zipp Tangente Puncture resistant road bike tire which is the ONLY tire that can replace old road bike tread inserted in the new roadbike tire as a liner. I live in Indonesia and every road is uneven and full of holes ! Thanks Josh !
Don't make inserts mandatory, then there is motivation to improve tubeless compatibility between tires and rims rather than relying on a foam noodle in the tire.
Greetings, a show idea that popped in my head. How about testing if pulling up on pedals as well as pushing down will noticeable increase speed/power. You could train up for a few months with uppedaling then test pushing down only versus pulling and pushing concurrently. For me it seems to give a noticeable boost, especially while climbing or sprinting. Anyway sounds like GCN does science could try this.
#askgcntech love this video! Makes me wonder... what's the most aero way to carry a laptop on your commute to work? In some ways a backpack seems the most obvious answer, but is it? What about a frame bag? Wouldn't that act as a faring?
This was awesome..got a question based on the show..certainly understand if no one has time to answer. I have carbon rims that are 44 mm. The width is 27mm and I am running 28 conti 5000 with latex tubes. The roads in Chicago are pretty rough. Would it make sense to switch to 25 mm tires to gain the aero benefit, or am I gaining more watts with the slightly wider tire and reduced rolling resistance. Thanks for any suggestions..
Brilliant guys!! Love the explanations. Hysteresis is in many dynamic systems to some extent. For example our lungs 🫁 have slightly different pressure-volume loop characteristics between inhalation vs exhalation.
Since most of us do not ride new tires or equipment most of the time, I wonder about the durability of optimal design elements - would my top-rated tire (I mean, tyre) remain top-rated as it wears, relative to other designs or equipment matches?
@@bradrogers2427 Thank you. As I should have suspected, someone has already thought about this very topic and thoughtfully undertaken a illustrative study. The link is great, and now I get to wonder about how well various tires compare.
at 7:26 i was like WTF, how the power to maintain a speed double requires 8 times more power? Turns out P=v*F with F the drag force and v the speed relative to the air. And as the guest said, F is proportional to v squared. So the P is proportional to v³, i always thought it was v² !
I'm over this marginal gains ideology. Sure if you competing for the Olympics or on a pro team/serious racer go for it, but for the average rider (who are by far the majority) marginal gains are just another marketing gimic to take your money. In a world where everything is better , faster, must have etc, maybe folks should slow down and actually enjoy the ride, the views and the company around you.
Gains on the margin are certainly not worthless, but there's always a trade-off; that is, a cost. For me, and I suspect for most recreational riders, whether a "marginal" gain is worth it comes down to the price of that gain -- you know, money gone and no longer available for something else. Pro riders and their teams may not care how much money a gain costs because 1) the rewards are also deemed to be monetary, 2) it's being provided to them at no cost, or 3) they're being paid to use it. But most of us have to pay for these gains with our own money, and that is why we often reject them. It's not because we think they're rubbish; it's because we live in the real world. All that logic being meted out, sometimes the thing producing the gain is just plain ugly and isn't going on me or my bike.
@@gcntech I think that has nothing to do with adding unnecessary rules. If a team/rider wants to ride tubulars, fine. If they want to ride clinchers with tubes, fine. If they want to ride tubeless with hooked rims, hookless rims, inserts, whatever brand sealant they want, fine. If a run-flat tire is developed and they want to run that, fine. If they want to run a full-suspension bike, fine. If they want to run a dropper post, fine. BTW, Dylan Johnson running puppy paws...that's outlawed by the UCI in road racing, is it outlawed yet in off-road racing?
Well then Josh has never read Bicycle Quarterly. A hard pumped up tyre is "fast" on the steel drum but is slow in the real world. When you deflate the tyre it will roll easier. The hysteresis will of course increase but the relative larger suspension losses will decrease. That's even more true if the tyre is supple.
FIRST!!! Marginal gain im surprised no one eles has checked out. Eat alot of beans before the race and theoretically, you can propel yourself forward. Your welcome 🙏 🤗
Marginal gains aren't worth it for us normal riders. It doesn't matter whether I get to the cafe 10 seconds faster or whether I beat my mate to the sign, nothing is going to come of it in the end. But I do like the feeling of going fast and I do love bikes and their tech, so if something will help me, I'll most likely try it. Well, maybe more in the past. Nowadays, I'm just not fast anymore. 😁
Tufo Josh, really! Tufo tubulars had an inner tube that was vulcanized to the casing and had side beads so it could be fitted onto a clincher rim - so definitely not a "tubeless tubular" by any stretch of the imagination. If you took a very good (sub 9 watt RR -) racing tubular with a latex inner tube, for example, Vittoria Corsa Speed or Veloflex Protour Race, and you removed the latex inner tube and replaced it with latex sealant, you would have a "real" tubeless tubular. Would it be able to hold air at 130 psi is another question, but with a little engineering, there is no reason why not. Hypothetically, it would have even lower RR than with the latex inner tube.....that was the suggestion from fruissy I believe....
Back where and when I got into riding and racing, part of being a good cycling steward was helping newer riders and racers understand that, unlike putting time into fitness, bike handling skills, and tactics, putting much effort and resources into pursuing marginal gains was for pros, the naive, and those who hadn't yet realized that they were never going to be pros. When are you going to stop encouraging your audience to waste their money and start being good stewards?
Thanks for reading my comment and I confirm kudos on saying Ferrari but brutally butchering the pronunciation of my name guys, 🤣🤣🤣. It is not Amil-“care” but something like Amil-kare (like in Karen 😂) and with the r”said like in Ferrari 🤣🤣🤣 love you and no worries I work with an English firm so you said it like most of my friends and colleagues there
The way I see it. 1 marginal gain doesn’t really matter but if you have say 10 marginal gains and put them all together that is a massive gain. I will never tell my partner have much I’ve spent on my bike 👀😂
Hookless wheels are an absolute scam. They were made to save cost on the hook bead. That’s the real marginal gain from the marketing department who are all laughing to the bank lol.
I’m not sure that many people grasp the idea that marginal gains are not just about going faster, they’re about being more efficient which means you can also go further or do the same for less effort.
Seems like you consistently forget about the other half of marginal gains or fail to mention it. Consider the efficiency of marginal gains. You may not care about speed, but less effort to maintain your speed is also an important consideration.
Maxbucky24 here - I’d swapped all the aero gains off of my tt bike onto my road bike just to see how much difference it makes. I went to the wind tunnel test day with EzGains and the disc cover is as fast as a top end disc wheel and 1/10th the cost and the chainring cover is a lot more aero than a separate crank and chainring
This was just so wrong beheavior from Dr. Bridgewood on 1 or 2 levels. To sit a whole show in front of Josh, from Silca and call Cuthbert, Alex. It's so dehumanizing if you, on purpose, call people by another name. Even when Cuthbert try to remind him of the joke, He just flat out ignore it. So disrespectfull
There is a misconception here. There are no marginal gains. There are cost effective gains, for which the average rider will say "why not" and not cost effective gains, for which the average rider will say "you must be kidding'"...
I love the composure with which Axel endures recurring jokes about his first name 😂 Also, please be careful, don't hurt yourself with these razor spoke wheels.
Great Show, really informed and interesting guest. PS...The Parachute Regiment also run the Pen Y Fan as part of their training, I first did it in 1965 as an 18yr old Para recruit; passed the training and spent 6yrs in 3 Para.
That the inserts expand after loosing pressure is one vital information we didn't get in the last video. And of course are compressed when you pump up the tyre and that way don't influence rolling resistance very much. Good info.
Hey guys! I enjoy your shows a lot! You’re such freaks... „I like straight lines“ - just like me, perfectly normal people! 😂 As to the „EVO“ picture question: it is indeed real. One light source (the sun) and the same shadow angle as the trees for example. I’m a designer & digital artist so I can assure you 100%. Cheers from Düsseldorf/GER 🙂✌🏽
I have the impression the question do marginal gains matter for a casual rider has not been answered in the conversation. And I'm not saying there is one answer - this rather falls into the category 'it depends'. And I would argue this depends on three things 1. What is your style of riding, or in other words, what for you ride bikes? Is it commuting, adventuring, or sport? Do you ride alone, or in a group? Then we go to the point 2. How marginal are those marginal gains? Because I don't think gaining a few seconds, or even a couple of minutes (like 5-7 minutes) matters a lot for a commuter riding to work. It would matter if this was maybe 15 minutes or more. These margins are of course different for different people, I give them just for example. From the adventuring standpoint, like bike-packing, touring or simply riding fast for fun, again - If not looking at a bike computer, you probably won't notice the difference between riding 28 and 30 km/h - both speeds will feel virtually the same. This was for the 'riding fast for fun' part. And from yet another perspective - saving 15 minutes, or maybe being able to ride a 5 km further on a whole day touring ride probably is not worthwhile either. But make these hours or tens of kilometres - now, that's amazing! So, I think those really tiny marginal gains are worthwhile only if we start to compete - with others, or with ourselves (like breaking personal records). Of course, there are also those bigger marginal gains that can benefit all, but everyone needs to judge them by their own scale. And finally 3. How much do those marginal gains cost? The watts per money ratio? And how does this correspond to the thickness of our wallets?
My jersey seems to fit tighter with no wrinkles at the beginning of March than it did at the end of last November....... Yet strangely I'm slower 🤔 😂 PS. I've custom painted most of my bikes, one of them using a purple pearl in clear lacquer, sprayed over a black base, it turns the black purple and over white stays white with a hint of pearl in direst sunlight........ mine was the opposite way, white frame with black decals which went purple after lacquer🙂
Hey Alex. You wanted to see my wife’s Spinergy wheels so I cleaned them up and mounted them on her 1997 Seven and submitted my pics of the bike and the wheels to the Bike Vault. Check it out. Jimbo88.
Anyone who says aero in xyz situation doesn't matter or only matters on a road bike, is just wrong. In my experience I'm inherently lazy and want to do as little for as much as I can get. After experiencing a road bike, going back to a mountain bike....now im taking off the rack when I dont need it etc etc. It matters and makes real difference when your doing time sensitive things like bike commuting. I love the safety, feel, load and stability commuting with an MTB, but the speed of a gravel or road is so tempting. Some days I change it up, record commute time was done on a gravel when normally I ride a e-mtb (20mph), felt pretty good about that. When you start really paying attention to bikes and have multiple types its very obvious just how important aero is. Especially same route day in day out over the whole year.
Been using Vittoria Airliners with my Conti GP5000S TR. Saved me a long walk home already, Although you have to ride relatively slowly, but at least you can still ride home.
marginal gains = £££££££. At some point the cost is too much. Got a aero helmet, deep section wheels and tyres. Went with lighter bar rather than aero bars.
I would think that the biggest gain the average rider can achieve would be to spend 3-4 hours a week in the gym. The cost is low and the gains keep coming. You can spend $1000 on a set of wheels for a few watts or $25 a month for 50 to 100 watts gain. I see so many people with money trying to compensate for just being in poor shape. Dylan Johnson is not your average rider. He spends many hours in the gym and any gain would help him in long races.
Tyre pressure isn't really a field in which gains can be archived if you are not doing it wrong to begin with. With most cases there is quite a wide spectrum of tyre pressure with the same rolling resistance. The principle and idea behind a pneumatic tyre is that is just lowly pumped up so that it deflects on bumps. Otherwise we would fit solid rubber tyres on the rims. So 50 psi and more are ridiculous! The low limit is that the tyres cannot collapse - not even partially while cornering. With medium sized tyres as 32 to 42 mm the spectrum of acceptable tyre pressures is quite large while with larger tyres it tends to shrink as the maximum pressure gets lower but also the tendency to collapsing sidewalls increases. 42 mm is the optimal tyre width. Where do I get a 44.1 mm wide aero rim with a breaking surface in 650B?
As an American now living in Canada, I can tell you Americans DO NOT say "deh-kil" we say "dee-kahl" it is Canada that says it that way! And not even all Canadians, just some, haven't quite figured out where that line is yet.
Marginal gains? Well then.... don´t forget the enema before the ride to lose weight! Cut your hair. Shave! And use a new razor blade all over your body to get rid of too thick skin!😛 And if you are worried about not having enough fuel after the enema. Going keto lets you have ketones from the liver no matter what! It all works, you know! 🤣
How is everyone confused about the decals on Manon's Ridley?? The technique is called airbrushing. Some paint indeed got on the decals, by design, to give them a slight tint matching the paint.
Excellent work, Alex. Sorry, dude with the hair. Alex, you have a good point there that not all riders are small and right now there is a massive market of massive humans looking to cycling as hope to become less massive but confronted with people like olí who just thinks one size.
Have had low to no interest in GCN flotsam and jetsam....would rather be out riding. If engineering/empirical data driven content is the new direction, I may subscribe.
When I was young I was racing - the better I was the less I cared for technical gimmicks- at the time people drilled holes in chain wheels and break leavers I had a trainer who told us better to go on the bike instead fiddling at the bike for marginal gains this guy became later DS of La Vie Claire! Last Tuesday I was watching a training race where amateur riders come from Alsace Germany and Switzerland close to Basel it was not the guys with very expensive bikes that performed best but the fittest
Regarding marginal gains: If you've solved the bigger gains already, then go for it. A lot of riders go straight for marginal gains but have a bike fit which doesn't work. Riders outright speed is irrelevant.
My thought is don't use hookless on the cobbles and see if get same issue or for Ollie #ForScience Saved riders lives? Ollie stop cycling around the track with the F1 cars ...
What’s your favourite marginal gain? 🧐
shifters inside
🌬️Riding in the drops.
I like leaving some marginal gains on the table so I can then surprise myself with how fast I am when there's an event. That's why I ride most days in a retro jersey. It makes an Assos skinsuit that much faster on the day when you put it on.
The big ring. 😀
which is faster (aero + Rolling resistance)? Real 25mm tire with 25mm optimized rim or real 28mm tire with 28mm optimized rim?
Having guests like josh on is a huge step in the right direction.
Great to hear that you enjoyed having josh in the video 🙌 Where would you like to see us take the channel? We'd love to hear your feedback.
@@gcntech Dylan Johnson would be great to have on the channel.
@@SecwetGwiwer As long as his alter-ego comes too brah.
I think you’re headed in the right direction with the nutrition video this week and the tech guest. Obviously, you have a big fewer bass and a lot of us are well past the more basic videos, and would like to hear about more in-depth topics that would help us go faster/farther
I have to start watching Josh. He’s just saying ”X actually works”.
Finally someone who won’t think I’m insane for wanting a 500€ upgrade which has as much of a gain as skipping out on eating that extra spoonful of yoghurt.
Josh is ace. Fountain of knowledge, expertise and a great guy I would imagine
Shall we get him back on the show? Bit more Josh coming this week 👀
Have this dude on every week. He’s really dropping the knowledge on Ollie and Boris.
His knowledge of putting us to shame 👀
Regarding the point that aero gains don't matter for slow riders, there is also the aspect of the watts you need to increase your speed by 1 km/hour, which is much lower at low speeds.
So you gain fewer watts at lower speeds, but you also need less power to ride faster. Therefore, aero gains are as important for less powerful riders as for pros.
Maybe this makes it in the next video about aero gains
🤑 As athletes existing in a marketing-heavy sport, it’s easy to lose sight of the forest for the trees.
We understand that marginal gains are “worth it,” but it’s important to remember that 70-80% of the system’s drag comes from the rider, so the most cost effective way to improve cycling efficiency is to improve your CdA through proper bike fit and spending time training in aerodynamic positions.
Yes!
Which are among the marginal gains which come under said ‘heading’!
Wrong, best way is self balancing bike and remove rider jk
Blow the marginal gains in speed, I'm 68 and suffered badly from road buzz in my hands, wrists and feet whilst running v good 25mm tyres at 110 psi, because of GCN I changed said tyres to 28mm same brand, added latex inner tubes dropped pressure to 60 psi to find I can ride all day without pain and discomfort - that's not marginal - that's almost life changing . Thank you guys
One of the Top 10 GCN Tech shows of all-time! Bring back Josh for more shows!!!
The groundspeed vs airspeed thing is SO huge. I live in Kansas and dealing with crazy wind day in day out. Even on my commuter bike, making some aero tweaks (trunk bag vs panniers) makes a huge difference in terms of overall speed and effort.
Could listen to Josh for hours! Legend
Giovanni making a hash of the Shaw quotation at 35:46 - "Two countries separated by a common language"
Kudo to Ollie for letting this pass.
If I was in any way working for a team partaking in Roubaix, I would absolutely advocate for the use of tireliners. You'd be a sucker if you didn't use them.
And because of that, I would not want to make them mandatory, because I wouldn't want to take away a chance for my competitors to make a rookie mistake in not using them...
Happily listen to Josh talking bike science all day long - great guest 👍👍
On the Ridley bike, the decals were applied to protect the white base coat paint before spraying the purple, actually they were "masks" not "decals". The masks were then removed revealing the white base coat paint and finished with clear coat.
Finally someone good on the show
Facing my out of square bb shell without the professional tool fixed a terrible cartridge square taper bb from day 1. 8200 miles terrible tight and rough. If I were concerned with marginal gains I wouldn't ride a track bike as a road bike. Clip on tri bars definitely went beyond marginal gain territory.
Josh needs to be on the show more often
Tubeless tubulars are a product made by challenge ( not tufo ) These are just tubulars with a latex coated inner. So tubulars can be made without an inner tube and they can be ran with sealant. I guess since its from challenge they will not be as slow as tufo tires. Since those tufo tirs have never been fast! However I see no point in running these tubeless tubulars either.
I've got a question for GCN Tech - Why are Road pedals and cleats so dramatically different from MTB pedals/cleats?
Hey Josh thanks for maybe helping develop the Zipp Tangente Puncture resistant road bike tire which is the ONLY tire that can replace old road bike tread inserted in the new roadbike tire as a liner. I live in Indonesia and every road is uneven and full of holes ! Thanks Josh !
Only important if you're competing in some way. Otherwise just get an E bike if speed is that important for you.
Don't make inserts mandatory, then there is motivation to improve tubeless compatibility between tires and rims rather than relying on a foam noodle in the tire.
Greetings, a show idea that popped in my head.
How about testing if pulling up on pedals as well as pushing down will noticeable increase speed/power.
You could train up for a few months with uppedaling then test pushing down only versus pulling and pushing concurrently.
For me it seems to give a noticeable boost, especially while climbing or sprinting.
Anyway sounds like GCN does science could try this.
Josh is the biggest brain in cycling tech!
Please make Josh a regular guest!
#askgcntech love this video! Makes me wonder... what's the most aero way to carry a laptop on your commute to work? In some ways a backpack seems the most obvious answer, but is it? What about a frame bag? Wouldn't that act as a faring?
really interesting chat
This was awesome..got a question based on the show..certainly understand if no one has time to answer. I have carbon rims that are 44 mm. The width is 27mm and I am running 28 conti 5000 with latex tubes. The roads in Chicago are pretty rough. Would it make sense to switch to 25 mm tires to gain the aero benefit, or am I gaining more watts with the slightly wider tire and reduced rolling resistance. Thanks for any suggestions..
Brilliant guys!! Love the explanations. Hysteresis is in many dynamic systems to some extent. For example our lungs 🫁 have slightly different pressure-volume loop characteristics between inhalation vs exhalation.
Since most of us do not ride new tires or equipment most of the time, I wonder about the durability of optimal design elements - would my top-rated tire (I mean, tyre) remain top-rated as it wears, relative to other designs or equipment matches?
@@bradrogers2427 Great link. Shows that a fast tire like GP5000 can also be long wearing.
@@bradrogers2427 Thank you. As I should have suspected, someone has already thought about this very topic and thoughtfully undertaken a illustrative study. The link is great, and now I get to wonder about how well various tires compare.
at 7:26 i was like WTF, how the power to maintain a speed double requires 8 times more power?
Turns out P=v*F with F the drag force and v the speed relative to the air. And as the guest said, F is proportional to v squared.
So the P is proportional to v³, i always thought it was v² !
I'm over this marginal gains ideology. Sure if you competing for the Olympics or on a pro team/serious racer go for it, but for the average rider (who are by far the majority) marginal gains are just another marketing gimic to take your money. In a world where everything is better , faster, must have etc, maybe folks should slow down and actually enjoy the ride, the views and the company around you.
Thanks for the comment Simon! We think there is space for both these styles within cycling, that is part of why it is such a great sport 🙌
Aero crank video please
When are GCN going to start selling the Silca tshirts?
Gains on the margin are certainly not worthless, but there's always a trade-off; that is, a cost. For me, and I suspect for most recreational riders, whether a "marginal" gain is worth it comes down to the price of that gain -- you know, money gone and no longer available for something else. Pro riders and their teams may not care how much money a gain costs because 1) the rewards are also deemed to be monetary, 2) it's being provided to them at no cost, or 3) they're being paid to use it. But most of us have to pay for these gains with our own money, and that is why we often reject them. It's not because we think they're rubbish; it's because we live in the real world. All that logic being meted out, sometimes the thing producing the gain is just plain ugly and isn't going on me or my bike.
Tubeless tire inserts for Paris-Roubaix? Great!
As a requirement? NO!
If you don't want to use them, don't.
Do you think that this may mean that teams push their riders into becoming unsafe in the name of marginal gains? 👀
@@gcntech I think that has nothing to do with adding unnecessary rules. If a team/rider wants to ride tubulars, fine. If they want to ride clinchers with tubes, fine. If they want to ride tubeless with hooked rims, hookless rims, inserts, whatever brand sealant they want, fine. If a run-flat tire is developed and they want to run that, fine. If they want to run a full-suspension bike, fine. If they want to run a dropper post, fine. BTW, Dylan Johnson running puppy paws...that's outlawed by the UCI in road racing, is it outlawed yet in off-road racing?
Thanks for this deep dive.
No worries Ethan! Great to hear you enjoyed it! Would you like some longer videos in the future?
My only criticism is that this should either have lasted 12 hours or should be daily
Josh comes in and instantly starts making a reasoned and well constructed input. I don't like it 😂😂😂 (joking).
What's this? useful tips coming out a video with Alex and Ollie in... doesn't sit right with us 😂
Well then Josh has never read Bicycle Quarterly. A hard pumped up tyre is "fast" on the steel drum but is slow in the real world. When you deflate the tyre it will roll easier. The hysteresis will of course increase but the relative larger suspension losses will decrease. That's even more true if the tyre is supple.
FIRST!!! Marginal gain im surprised no one eles has checked out. Eat alot of beans before the race and theoretically, you can propel yourself forward. Your welcome 🙏 🤗
A classic 💨
When is the next bike race going to happen that instead of cobbles it has stairs lol
Oh my.....Silca pumps are quite high end I'd say.
A non À rider looks really bad in tight cycling clothing. Marginal gains is a trade off vs oversized costs.
I put latex tubes in and waxed my chain on my vintage bike and was super impressed at the difference it made.
Did you start to see those PB's come crumbling down? 👀
I think for a lot of every-day riders... marginal gains turn into a huge loss, when the bike gets stolen.
Marginal gains aren't worth it for us normal riders. It doesn't matter whether I get to the cafe 10 seconds faster or whether I beat my mate to the sign, nothing is going to come of it in the end. But I do like the feeling of going fast and I do love bikes and their tech, so if something will help me, I'll most likely try it. Well, maybe more in the past. Nowadays, I'm just not fast anymore. 😁
Tufo Josh, really! Tufo tubulars had an inner tube that was vulcanized to the casing and had side beads so it could be fitted onto a clincher rim - so definitely not a "tubeless tubular" by any stretch of the imagination. If you took a very good (sub 9 watt RR -) racing tubular with a latex inner tube, for example, Vittoria Corsa Speed or Veloflex Protour Race, and you removed the latex inner tube and replaced it with latex sealant, you would have a "real" tubeless tubular. Would it be able to hold air at 130 psi is another question, but with a little engineering, there is no reason why not. Hypothetically, it would have even lower RR than with the latex inner tube.....that was the suggestion from fruissy I believe....
Don’t buy upgrade. Rides upgrade.
Back where and when I got into riding and racing, part of being a good cycling steward was helping newer riders and racers understand that, unlike putting time into fitness, bike handling skills, and tactics, putting much effort and resources into pursuing marginal gains was for pros, the naive, and those who hadn't yet realized that they were never going to be pros. When are you going to stop encouraging your audience to waste their money and start being good stewards?
Thanks for reading my comment and I confirm kudos on saying Ferrari but brutally butchering the pronunciation of my name guys, 🤣🤣🤣. It is not Amil-“care” but something like Amil-kare (like in Karen 😂) and with the r”said like in Ferrari 🤣🤣🤣 love you and no worries I work with an English firm so you said it like most of my friends and colleagues there
The way I see it. 1 marginal gain doesn’t really matter but if you have say 10 marginal gains and put them all together that is a massive gain. I will never tell my partner have much I’ve spent on my bike 👀😂
Hookless wheels are an absolute scam. They were made to save cost on the hook bead. That’s the real marginal gain from the marketing department who are all laughing to the bank lol.
Tubes r the only way
What is the point of watching the Tech show each week, if GCN's own version of Prof Martyn Polliakoff doesn't tell us he loves us when he says bye?
love Polliakoff! 😉
45 minutes of Josh and Ollie? I'm in bike nerd heaven. 🤓 😇 Thanks Josh for appearing on the show, and for being a sponsor.
Long show this week! We couldn't stop chatting 🙌
@@gcntech way better than question TV shows when it like *says half answer* "okay we must leave it there"
Week 5 of asking for a 'The UCI has no jurisdiction here' T-shirt
We should ALL thank Josh. Such a great Man
We loved having Josh on the show 🙌Should we get him back for more? 👀
#askgcntech Watts wrong! I swear I've increased my margarine gains, yet I'm getting slower and slower? Any food for thought?
Awesome... absolutely LOVED this! Josh (and Silca) is brilliant... please PLEASE more regular geek-out sessions
More geeky Josh chat coming soon! Turn those notifications on and never miss a video 🔔
I’m not sure that many people grasp the idea that marginal gains are not just about going faster, they’re about being more efficient which means you can also go further or do the same for less effort.
Great point! Do you use marginal gains to help you out on those long efforts 👀
@@gcntech absolutely, I’ll take all the help I can get!
Josh is great, bring him on more
Look Who's Back... Back Again 😎
Love Josh and Silca, great stuff.
Was a pleasure having josh on the show 🙌 Should we do more Silca content? 👀
@@gcntech Absolutely! They are doing an Unbound series right now, would love additional content about that.
Seems like you consistently forget about the other half of marginal gains or fail to mention it. Consider the efficiency of marginal gains. You may not care about speed, but less effort to maintain your speed is also an important consideration.
Full on Josh bingo card: "it depends", "rule of 105", "hysteresis", "at Zipp". Loved it!
Maxbucky24 here - I’d swapped all the aero gains off of my tt bike onto my road bike just to see how much difference it makes. I went to the wind tunnel test day with EzGains and the disc cover is as fast as a top end disc wheel and 1/10th the cost and the chainring cover is a lot more aero than a separate crank and chainring
This was just so wrong beheavior from Dr. Bridgewood on 1 or 2 levels. To sit a whole show in front of Josh, from Silca and call Cuthbert, Alex. It's so dehumanizing if you, on purpose, call people by another name.
Even when Cuthbert try to remind him of the joke, He just flat out ignore it. So disrespectfull
There is a misconception here.
There are no marginal gains.
There are cost effective gains, for which the average rider will say "why not"
and not cost effective gains, for which the average rider will say "you must be kidding'"...
Ollie's perfect Ferrari pronunciation suggested to me that his Ferrari dealer must be from the Huddersfield region of Italy 🇮🇹
Has team UAE explored marginal gains of haircut so no hair sticking out of helmet?
I look like a badly packed sausage already without buying tighter fitting clothes haha
As a bit of a nerd myself this is my favourite GCN video and I was part of the first 150 subscribers!!! 🤓
I love the composure with which Axel endures recurring jokes about his first name 😂
Also, please be careful, don't hurt yourself with these razor spoke wheels.
We'll be keeping Hank as far away from the spinergy wheels as possible 😂
why not just use a tube a in old school worked fine for years
jockey wheels i dont like the no bearing 1s give me ball bearing any day . i no its not much gain but that grinding is cyclogical and annoying
Great Show, really informed and interesting guest. PS...The Parachute Regiment also run the Pen Y Fan as part of their training, I first did it in 1965 as an 18yr old Para recruit; passed the training and spent 6yrs in 3 Para.
I don't think anyone says dehcals.
I ❤❤❤❤❤❤ Silca immersion wax.
I have never had any problems with baggy cloths.
Baggy clothing can be great! Wear what makes you happy and keeps you riding 🙌
That the inserts expand after loosing pressure is one vital information we didn't get in the last video. And of course are compressed when you pump up the tyre and that way don't influence rolling resistance very much.
Good info.
I always skip the bike vault part. Reason is I feel bad if someone doesn't get super nice. It gets personal in some weird sort of a way.
It's still nice though 🙌
Hey guys! I enjoy your shows a lot! You’re such freaks... „I like straight lines“ - just like me, perfectly normal people! 😂 As to the „EVO“ picture question: it is indeed real. One light source (the sun) and the same shadow angle as the trees for example. I’m a designer & digital artist so I can assure you 100%.
Cheers from Düsseldorf/GER 🙂✌🏽
I have the impression the question do marginal gains matter for a casual rider has not been answered in the conversation. And I'm not saying there is one answer - this rather falls into the category 'it depends'. And I would argue this depends on three things 1. What is your style of riding, or in other words, what for you ride bikes? Is it commuting, adventuring, or sport? Do you ride alone, or in a group? Then we go to the point 2. How marginal are those marginal gains? Because I don't think gaining a few seconds, or even a couple of minutes (like 5-7 minutes) matters a lot for a commuter riding to work. It would matter if this was maybe 15 minutes or more. These margins are of course different for different people, I give them just for example. From the adventuring standpoint, like bike-packing, touring or simply riding fast for fun, again - If not looking at a bike computer, you probably won't notice the difference between riding 28 and 30 km/h - both speeds will feel virtually the same. This was for the 'riding fast for fun' part. And from yet another perspective - saving 15 minutes, or maybe being able to ride a 5 km further on a whole day touring ride probably is not worthwhile either. But make these hours or tens of kilometres - now, that's amazing! So, I think those really tiny marginal gains are worthwhile only if we start to compete - with others, or with ourselves (like breaking personal records). Of course, there are also those bigger marginal gains that can benefit all, but everyone needs to judge them by their own scale. And finally 3. How much do those marginal gains cost? The watts per money ratio? And how does this correspond to the thickness of our wallets?
My jersey seems to fit tighter with no wrinkles at the beginning of March than it did at the end of last November....... Yet strangely I'm slower 🤔 😂
PS. I've custom painted most of my bikes, one of them using a purple pearl in clear lacquer, sprayed over a black base, it turns the black purple and over white stays white with a hint of pearl in direst sunlight........ mine was the opposite way, white frame with black decals which went purple after lacquer🙂
Hey Alex. You wanted to see my wife’s Spinergy wheels so I cleaned them up and mounted them on her 1997 Seven and submitted my pics of the bike and the wheels to the Bike Vault. Check it out. Jimbo88.
Anyone who says aero in xyz situation doesn't matter or only matters on a road bike, is just wrong. In my experience I'm inherently lazy and want to do as little for as much as I can get. After experiencing a road bike, going back to a mountain bike....now im taking off the rack when I dont need it etc etc. It matters and makes real difference when your doing time sensitive things like bike commuting. I love the safety, feel, load and stability commuting with an MTB, but the speed of a gravel or road is so tempting. Some days I change it up, record commute time was done on a gravel when normally I ride a e-mtb (20mph), felt pretty good about that. When you start really paying attention to bikes and have multiple types its very obvious just how important aero is. Especially same route day in day out over the whole year.
Been using Vittoria Airliners with my Conti GP5000S TR. Saved me a long walk home already, Although you have to ride relatively slowly, but at least you can still ride home.
marginal gains = £££££££. At some point the cost is too much. Got a aero helmet, deep section wheels and tyres. Went with lighter bar rather than aero bars.
I would think that the biggest gain the average rider can achieve would be to spend 3-4 hours a week in the gym. The cost is low and the gains keep coming. You can spend $1000 on a set of wheels for a few watts or $25 a month for 50 to 100 watts gain. I see so many people with money trying to compensate for just being in poor shape. Dylan Johnson is not your average rider. He spends many hours in the gym and any gain would help him in long races.
Tyre pressure isn't really a field in which gains can be archived if you are not doing it wrong to begin with. With most cases there is quite a wide spectrum of tyre pressure with the same rolling resistance. The principle and idea behind a pneumatic tyre is that is just lowly pumped up so that it deflects on bumps. Otherwise we would fit solid rubber tyres on the rims. So 50 psi and more are ridiculous! The low limit is that the tyres cannot collapse - not even partially while cornering.
With medium sized tyres as 32 to 42 mm the spectrum of acceptable tyre pressures is quite large while with larger tyres it tends to shrink as the maximum pressure gets lower but also the tendency to collapsing sidewalls increases.
42 mm is the optimal tyre width. Where do I get a 44.1 mm wide aero rim with a breaking surface in 650B?
As an American now living in Canada, I can tell you Americans DO NOT say "deh-kil" we say "dee-kahl" it is Canada that says it that way! And not even all Canadians, just some, haven't quite figured out where that line is yet.
Marginal gains? Well then.... don´t forget the enema before the ride to lose weight! Cut your hair. Shave! And use a new razor blade all over your body to get rid of too thick skin!😛
And if you are worried about not having enough fuel after the enema. Going keto lets you have ketones from the liver no matter what! It all works, you know! 🤣
How is everyone confused about the decals on Manon's Ridley?? The technique is called airbrushing. Some paint indeed got on the decals, by design, to give them a slight tint matching the paint.
Excellent work, Alex. Sorry, dude with the hair. Alex, you have a good point there that not all riders are small and right now there is a massive market of massive humans looking to cycling as hope to become less massive but confronted with people like olí who just thinks one size.
Have had low to no interest in GCN flotsam and jetsam....would rather be out riding. If engineering/empirical data driven content is the new direction, I may subscribe.
When I was young I was racing - the better I was the less I cared for technical gimmicks- at the time people drilled holes in chain wheels and break leavers I had a trainer who told us better to go on the bike instead fiddling at the bike for marginal gains this guy became later DS of La Vie Claire!
Last Tuesday I was watching a training race where amateur riders come from Alsace Germany and Switzerland close to Basel it was not the guys with very expensive bikes that performed best but the fittest
Ollie genuinely upset at learning about the effectiveness of aero cranks! I'm expecting a GCN-does-science any time... 😂
Regarding marginal gains: If you've solved the bigger gains already, then go for it. A lot of riders go straight for marginal gains but have a bike fit which doesn't work.
Riders outright speed is irrelevant.
If you're on a professional racing team, yes. If you're trying to sell me another bike I'm not falling for it.
Comfort is the best marginal gain for the average rider. Feet, Hands, bum. If your perfectly comfortable you will Ride further or farther.
My thought is don't use hookless on the cobbles and see if get same issue or for Ollie #ForScience
Saved riders lives? Ollie stop cycling around the track with the F1 cars ...