Yeah! Get him in a recumbent bike. Ez ;). Having "how fast can you go?" challenge, with silly rules (UCI rules) impeding perfomance in every aspect, always feels funny to me. All this technology used to mesure everything, is amazing though.
Can I just say that, as time has gone on, Ollie has become a really good presenter. Great enthusiasm and "down to earth", enough of a nerd to relate to many of us and a good sense of humour. Keep up the good work.
As much as Ollie gets kidded about his biking fitness that was some seriously impressive power. Well done Ollie. If only us mere mortals could go as fast as Ollie.
In order to go 48 km/h on a smooth flat road on a calm day with no interfering traffic at or near sea level, you need a ratio of Watts/CdA of ~ 1500 (slightly more if the road isn't flat or the surface isn't smooth, slightly less if you're riding on a dual carriageway with lots of traffic to push you along, a fair bit less if you're riding at altitude). So if Ollie had averaged 326 watts, his CdA would had to have been in the range of 0.20 or 0.21 m^2, which is a nice improvement from his starting CdA of 0.26.
What ALWAYS amazes me is the ability of the the presenter to speak clearly and with well controlled modulation while explaining technical details as he pedals his bicycle at speed! That takes a special sort of person!
Nice video. I can see several comments regarding: 1. Facial hair. Facial hair doesn't seem to matter as much as arm or leg fur, especially leg fur since the lower leg is a cylinder that churns through the air while the face is mostly "static." 2. Recumbents. Most unfaired recumbents have (surprisingly?) higher CdA than Ollie was reporting on this TT bike. Only a handful of unfaired recumbents have CdA < 0.20 m^2, and they often have other issues including high drive train losses and/or less than optimal tire rolling resistance. The only recumbents that are clearly better than an optimized rider on a modern TT bike have fairings -- streamliners can have a CdA < 0.03 m^2 -- but most commercially available recumbents have a CdA in the range of 0.25 - 0.35 m^2. As a reference, on Ollie's original road bike, he reported that his CdA was 0.26. A few low racers have CdA's in the range of 0.17 m^2, but they often achieve that with odd tire sizes, long chains with idlers, and reduced turning radius.
Wow, aweomse video! One of the most informative and interesting video's you guys ever produced! Super relevant for me as i can relate to the numbers. Thanks!
Jon, as you know, fairings, handlebars and even motors really aren't that big of a deal. The real issue here is the flagrantly illegal socks. Millions of children around the world look up to Ollie as a role model and him normalizing this sort of thing causes genuine harm. We're going to see a whole generation of cyclists who don't even understand why wearing long socks is cheating. :shakes head:
I want to see those that make fun of Ollie, because he has been dropped in other challenges, to ride that bike with the same average speed. He was not a pro cyclist and he is a machine. GCN is very lucky to have him in the team, very knowledgeable and makes very good and entertaining videos
You know, I'd wondered before about the effect of that motorcycle camera team providing drafting on other tests they've done. Nice to see Ollie accounting for that.
Cracking video! Besides Ollie’s charisma I really enjoyed the science and the effort put into making this clip. Grand tours are won and lost in a time trial.
That was a great bit of practical science from the GCN team and as always Ollie adds his own enthusiastic twist to the production. Chapeau Ollie and well done !
Really excellent nerdy video - lots of good info! BTW, bikecalculator estimates that 48kmh requires 405 watts for an 80 kg rider + 8 kg bike with the rider on aerobars on a flat course with no wind. Pretty close to Ollie's calculation of 430 watts. And final nerdy thing, asking google about the density of water vs custard: the two are actually pretty close in density! The real difference is that custard is a non-newtonian fluid - so offers much more resistance than water when significant pressure is applied
the air density thing is strange. I often noticed when riding every day to work, that some days the win kind of goes around you without slowing you down, despite it blowing quite strongly. Other days it's far less windy but the wind/air is like a brutal wall.
The wind effect does not "average out" on a loop because the aerodynamic drag is proportional to velocity squared, so you need more power to ride with headwind than what you save in tailwind, with the same wind speed. Hence no wind will be faster than windy, even on a perfect loop.
The Unit of Measure in this film shall forever be know as the "Olie." For instance, a cyclist need only 1.3 Ollie to take KOM up this climb & Training effort in today's class is at 0.7 Ollie for 45 minutes. Oliver's scientific endeavor into great speed at low watts has become a welcome source of entertainment!
It would be nice to see a similar video where you repeat the effort by removing only one variable, similar to what you mentioned in the end. I'm curious to know if there is only one thing that gives you a bigger step in performance or you need at least two or at least three etc. For example, what is the gain in performance using a skin suit on your regular road bike.
Kudos again Dr. Ollie for not only your accomplishment but using and explaining the maths and science behind your attempt. Also using the Siborg;s HIVE-born technology was an added boon, but your human updates were impressive as well. Thanks you for pointing out the edge sparking water gives humans in their quest for hydration. Love the vids and am looking forward to the Siborg smashing all expectations. All will be assimilated. Resistance is Futile. The HIVE requests the link to said updates to the Siborg's machine.
Very well produced! Perhaps in a future episode we could see how fast Ollie can go being limited to "enthusiast" level wattages that us mear mortals can produce. Could be a good gear swap video done with real world testing.
Great effort... only way I can get close to such numbers is on the indoor trainer... wind resistance is the biggest factor... could save another 5-10 watts by shaving (your face)... that is a frontal area factor that would create some turbulence and upset the airflow...
I can do about that for around an hour on my pretty crap mountain bike Tho last time i checked my bike is limited to 28mph so the closer i get to that speed the more resistance my wheels turning have Coasting and pedalling as hard as i can down the same hill the speed never goes over 28mph Tho i do need to recheck it i replaced the green crispy slimy crap in my bike with silicon grease so im hoping for a faster top speed tho i dont have time to go test it but i will test it at some point
@Pablo Hinze there is a mechanical / physical top speed for bikes For me i am hoping that comes down to the sticky crispy crud they used as bearing grease, Ive replaced it but cant go out and test it But no joke my bike cannot go over 28mph, even pulling it with a car the wheels will just start sliding while still spinning as they cant turn any-faster
@@commanderoof4578 U might need new bearings and/or even a pair of budget wheelset and you might go over the 28 mph “mechanical/physical top speed of ur bike” mate! Orrrrr…… just buy a new bike hahaha
@@BigBrownMonke its not just my bike i tested every bike in my shead Mine is the slowest at 28MPH Next its 31MPH, 33MPH, 34MPH And then my dada road-bike which i got to 55MPH on and went fuck this i ain’t going any faster and then started to slow down using So ALL BIKES have a mechanical speed limit where the wheels actually cannot spin faster just some that is really low and others where the top speed isn’t going be hit because you will decided to slow down or keep at that speed Ohh and all of this is down a hill by the way at 65 odd degrees that is actual 65 degrees not the road or incline crap 65 degrees where 90 would be vertical Not gonna change 65 degs to an incline because i dont use incline for anything
Hi This is Ramesh and I am a cycling enthusiest. I do cycling everyday for 30KM and follow all the guidelines suggested by GCN. Most of the accessories used by GCN team is not available in India. Can we get some accessories for cycling use in Indian roads and provide the feedback to GCN. So, GCN can understand the performance of different accessories at different road conditions.
4:10 where he talks about the air density this applies in water in terms of the amount of chlorine, most competition pools are lower in temperature which means they're less dense as they have less chlorine where as a normal non competition pool will be warmer and have more chlorine making them denser and noticeably slower for anyone who swims at a competitive level
Awesome video as always. Thank you Ollie I would like to introduce a counterpoint to denser air as you are correct in regards to the down side versus less dense air. However one component that needs more analysis is denser air is more oxygen rich which means that You should be able to biometrically produce more power/watts/ improve FTP. A Vo2Max would be interesting of dense air versus less dense air with metabolic improvements That may counter arrow dynamic drag. I would be interested for anyone to comment on this. Another words taking in more oxygen rich air versus less oxygen rich air?
Don't think the amount of oxygen in the air makes any difference. As long as there is more than around 17% O2 in the air your body will absorb 4% of it. Even if you breath 100% O2 you still only metabolise 4%. Some O2 may be absorbed into the plasma as well as the red cells but that just helps transport, your body still only uses 4% of the O2.
That's really interesting on my TT bike (which is just a modified aluminium road bike with a disk and tri bars) I can get low and aero myself but the bike is not aero at all. in one of my latest TT's I did a 10 in 23:26 with an avg power of 319watts. it goes to show how aerodynamics can help so much. (my excuse to ask my dad for a proper TT bike)
Very informative video! At the risk of being Captain Obvious, 30 mph is above the pay grade of most of us. While the power differential between aero and non-aero setups is massive in this test, for us 30 KM/HR (not mph), that differential on a percentage basis will be much more modest.
I posted this in the Velomobile Facebook forum this morning, and some recreational velomobile riders reckon they could beat Ollie. Can you do a video with either that Milan or Alpha7 velomobile you borrowed from Velo-Ads? I think it'd be a cool match-up.
If that course is the one I think it is (A40 dual carriageway between Abergavenny and Raglan) then I'm positive I saw Ollie doing this. Not my idea of a particularly safe course due to the trucks, plenty of opportunities to pick up a tow though! There must be a faster course you can send him to, see if he can crack 35mph!
Hey @Global Cycling Network , when are we going to see more Velomobile stuff? I need some motivation to build one and hassle our local roadies (because I've got no hope in a fair fight, I'd need a couple of years training)
Fantastic video! Just out of curiosity, how much did it cost to prepare for this effort? I don’t think most of us can afford the equipment Ollie used to reach this impressive achievement. So what was the cost of all of this Ollie?
I did it. Got so eager watching this, and always wanted to take the timetrialer in me to the full potential. I promise you, its expensive. at least 13000pund I have spent, but worth every penny. I became the Norwegian, and Nordic champion I Masters class, and In the Nordic one beating all other participants with 30sec or more over 28km. I am 47years and the classes starts at 30 ;-). The bike in this form is a true dream. You can cruise around with it at 40km/h barely pedaling if its flat ;-). Silly, silly fast if you get into the right position. Sure other bikes also are, but I never tried any other bikes. Just went for this one when I saw Oliie was that fast. 48km/h......
Aerolab lease their tech and the price is nothing short of hilarious. 430W for 4 minutes is damn impressive. Your FTP was 300W I thought? Well done on cracking the 30 mph barrier, that's inspiration for me for sure.
it’s important to distinguish the road bike from the tt bike when talking about ftp. climbing a mountain i could do more at the moment. i’m always less on the tt bike. but feel free to follow on strava. all the numbers are on there.
I once got an e-mountain bike to 48km/h on a road... The wild thing about that is that the limiter on e-bikes in Canada stops at 38km/h, so anything beyond that is done entirely *by the rider* on a 45lb full-suspension, non-aero bike. Pretty impressive hey? I did it for one city block lol
Well the helpful little table on the M5 site says that you need 250W to do 30mph (=483kph) on their Carbon High Racer. We don't know exactly how they got these numbers on their site but it is thought that it came from measurements. It is worth recalling that yes, this is the bike that holds the actual hour record (not the one shown in your video which is slower) so they are not kidding about how fast it is. And, their are people who regularly commute on this bike. So it is an eminently roadable bike. www.m5-ligfietsen.nl/site/EN/Models/Carbon_High_Racer/
Great Effort! However.... There is a reason that the R10/17 is the fastest course in south wales - It's a dual carriageway with all the traffic assist that comes with that. The traffic is worth a significant amount of watts.
Just some fun facts: Ashton Lambies (dude who just went under 4 minutes for the 4k) CDA is around 0.16 which is the lowest ive ever heard of. When hes on a velodrome he can do 30mph at 200 watts.
3:58 swimming though denser material is a bad example, as you float higher and can push harder in denser fluids. Speed can even increase compared to water.
The main issue with the comparison in the video is the fact that it refers to difference in viscosity rather than density. Those are two different physical quantities.
@@malloott Correct, buoyancy obviously depends only on density. I was referring to the comparison from the video in general. Custard is not that much denser than water, swimming in custard would be more difficult primarily due to viscosity.
Comments like 'less dence air is thiner' and 'its much harder to swim through custard' are exactly the reason we love Oli: you can always rely on him to break down the science for the layperson!
Why do your knees get left out of the NoPinz suit / socks combo, are they naturally more aero (I mean they are quite bony!)? Why not a full body suit (UCI?)?
My partner and I met Ollie at the TT he did and its fantastic to see the results. One quetsion though, how big a part does weight play? I know its not as big a factor as cda but my partner is 55kg and I'm 95kg. Frontal area, aside, how many more watts are required? the 10/17 has some gradients, I suspect this has more impact...
Is it really harder to swim through custard? Increased resistance also means your hands push back more effectively. Maybe they cancel each other out? Custard is also thixotropic so will thicken under the concentrated pressure from your hands an arms, but less so over your entire body moving forward.
admittedly i’ve not actually researched the hydrodynamic effects of human propulsion through non newtonian fluids, but i guess most people get the point i’m trying to make!
Ollie, your local transportation office or who ever governs your roadways may have what’s called a road friction co-efficient for the roadway you are testing on…we use friction co-efficient when we investigate serious traffic crashes on our highways in the states
Swimming through custard isn't actually much worse than water. Yes, resistance goes up, but so does the force with which you can propell yourself forwards.
For stuff like this where you can't use a chase vehicle, what about using a follow drone? There's quite a few models out there which can be set to ID an object and follow it.
4:00 for the swiming thing it acctually doesn't change anything in what type of fluid you swim because in a thiner one you can't push your self as far as in a thicker one bur also have a smaller hydrodynamicdrag
Custard is a non-Newtonian fluid, so it is different to water, in that it behaves more like a solid on impact (side of hand stroke, kick). Same as ketchup
Would you like to see Ollie go faster?
Yeah!
Get him in a recumbent bike. Ez ;).
Having "how fast can you go?" challenge, with silly rules (UCI rules) impeding perfomance in every aspect, always feels funny to me.
All this technology used to mesure everything, is amazing though.
Sure, however giving him a motorcycle would be a poor sportsmanship.
he seems pretty tired
Ollie should go faster
I just want to see a GCN special in the yellow TdF plane, that's true aero!
Can I just say that, as time has gone on, Ollie has become a really good presenter. Great enthusiasm and "down to earth", enough of a nerd to relate to many of us and a good sense of humour. Keep up the good work.
Next challenge: Ollie swims thru custard.
Send Hank to do it and it will get done 🙌
Best comments
Sounds more like a Hank challenge.
@@kritan84 COMMIT!
Good thing he said 'custard' and not 'used motor oil'
He even used long aero socks. He's more dedicated than when he did his hour record
need all the help i can get!
The hour record was under UCI regulation, right?
@@LarsRR IMO it was not. I think his tribars were exceeding maximal legal angle.
@@GCNuser123 you should try it on the Dogma F!
i am guessing covering the knees would impede movement and negate any aero gains?
As much as Ollie gets kidded about his biking fitness that was some seriously impressive power. Well done Ollie. If only us mere mortals could go as fast as Ollie.
326W over 10 miles is seriously impressive. 19m57s FTP 326!
@@AdamNigelDark x0. 95 😁
Yup. That's the same as my 20m power, except I'm carrying 10kg more muscle than Ollie, and not in an aero tuck!
In order to go 48 km/h on a smooth flat road on a calm day with no interfering traffic at or near sea level, you need a ratio of Watts/CdA of ~ 1500 (slightly more if the road isn't flat or the surface isn't smooth, slightly less if you're riding on a dual carriageway with lots of traffic to push you along, a fair bit less if you're riding at altitude). So if Ollie had averaged 326 watts, his CdA would had to have been in the range of 0.20 or 0.21 m^2, which is a nice improvement from his starting CdA of 0.26.
Thank God for the tech nerd that is Dr. Ollie Bridgewood! Another great, informative video👍👏
Up next can hank do a 10 minute 10k time trial on a 10£ bike
😂 We're sure he would try...
£10 bike? Luxury. Make him do a 10k time trial on a bike somebody has to pay HIM £10 to take it off their hands!
In custard.
@@kritan84 I like it
@@gcn Make him....
Solo effort, no way to get dropped :D
What ALWAYS amazes me is the ability of the the presenter to speak clearly and with well controlled modulation while explaining technical details as he pedals his bicycle at speed! That takes a special sort of person!
Ollie always looks like he's holding a basketball when he talks
I’d never thought about it but the instant I read your comment it became so apparent.
Made it to the gcn show congrats
"I want to be as legit as possible" I like this attitude by Ollie!
You guys do such a great job at offering interesting and quality videos! Big fan! And congrats on smashing it!
Nice video. I can see several comments regarding:
1. Facial hair. Facial hair doesn't seem to matter as much as arm or leg fur, especially leg fur since the lower leg is a cylinder that churns through the air while the face is mostly "static."
2. Recumbents. Most unfaired recumbents have (surprisingly?) higher CdA than Ollie was reporting on this TT bike. Only a handful of unfaired recumbents have CdA < 0.20 m^2, and they often have other issues including high drive train losses and/or less than optimal tire rolling resistance. The only recumbents that are clearly better than an optimized rider on a modern TT bike have fairings -- streamliners can have a CdA < 0.03 m^2 -- but most commercially available recumbents have a CdA in the range of 0.25 - 0.35 m^2. As a reference, on Ollie's original road bike, he reported that his CdA was 0.26. A few low racers have CdA's in the range of 0.17 m^2, but they often achieve that with odd tire sizes, long chains with idlers, and reduced turning radius.
Wow, aweomse video! One of the most informative and interesting video's you guys ever produced! Super relevant for me as i can relate to the numbers. Thanks!
The best part was the sense of joy Ollie had at the end when he achieved his goal.
Oh deary me Ollie! That bike is certainly not UCI legal with the fairing and those handlebars. P.s. where's the motor hidden 😜
Do a guest appearance on GCN tech Jon, we miss you
@@robbeelsas keep an eye out on GCN+ on the documentaries 💪
UCI legal doesn't matter for 99% of riders
Jon, as you know, fairings, handlebars and even motors really aren't that big of a deal. The real issue here is the flagrantly illegal socks. Millions of children around the world look up to Ollie as a role model and him normalizing this sort of thing causes genuine harm. We're going to see a whole generation of cyclists who don't even understand why wearing long socks is cheating. :shakes head:
short socks and hairy legs for the win, baby!
I want to see those that make fun of Ollie, because he has been dropped in other challenges, to ride that bike with the same average speed. He was not a pro cyclist and he is a machine. GCN is very lucky to have him in the team, very knowledgeable and makes very good and entertaining videos
thanks mate!
We need to see the siborg back on his bike
Ha! No, let’s make Dan ride again just for lolz. He’d be so mad.
You know, I'd wondered before about the effect of that motorcycle camera team providing drafting on other tests they've done. Nice to see Ollie accounting for that.
An avid mountain biker and more-recently gravel biker, I've never even hit 30 mph on the flats.....need my aero suit !
Cracking video! Besides Ollie’s charisma I really enjoyed the science and the effort put into making this clip. Grand tours are won and lost in a time trial.
Ollie certainly is my favorite presenter at GCN by far!
That was a great bit of practical science from the GCN team and as always Ollie adds his own enthusiastic twist to the production. Chapeau Ollie and well done !
You think he’d shave his beard if he was serious about aero!
For Campenaerts, a mustache actually tested FASTER than no beard at all, this the name of his Hour record bike “the flying mustache”.
Or flow it out
also his eyebrows
Really excellent nerdy video - lots of good info! BTW, bikecalculator estimates that 48kmh requires 405 watts for an 80 kg rider + 8 kg bike with the rider on aerobars on a flat course with no wind. Pretty close to Ollie's calculation of 430 watts. And final nerdy thing, asking google about the density of water vs custard: the two are actually pretty close in density! The real difference is that custard is a non-newtonian fluid - so offers much more resistance than water when significant pressure is applied
the air density thing is strange. I often noticed when riding every day to work, that some days the win kind of goes around you without slowing you down, despite it blowing quite strongly. Other days it's far less windy but the wind/air is like a brutal wall.
Put a dehumidifier in your house and you'll be surprised at the moisture it takes out.
TT videos are the best
The wind effect does not "average out" on a loop because the aerodynamic drag is proportional to velocity squared, so you need more power to ride with headwind than what you save in tailwind, with the same wind speed. Hence no wind will be faster than windy, even on a perfect loop.
The Unit of Measure in this film shall forever be know as the "Olie." For instance, a cyclist need only 1.3 Ollie to take KOM up this climb & Training effort in today's class is at 0.7 Ollie for 45 minutes. Oliver's scientific endeavor into great speed at low watts has become a welcome source of entertainment!
It would be nice to see a similar video where you repeat the effort by removing only one variable, similar to what you mentioned in the end. I'm curious to know if there is only one thing that gives you a bigger step in performance or you need at least two or at least three etc. For example, what is the gain in performance using a skin suit on your regular road bike.
I need a notification tone of Ollie saying MATHS and SCIENCE
Kudos again Dr. Ollie for not only your accomplishment but using and explaining the maths and science behind your attempt. Also using the Siborg;s HIVE-born technology was an added boon, but your human updates were impressive as well. Thanks you for pointing out the edge sparking water gives humans in their quest for hydration. Love the vids and am looking forward to the Siborg smashing all expectations. All will be assimilated. Resistance is Futile. The HIVE requests the link to said updates to the Siborg's machine.
14:05 "how quick you can go even if you're just a mortal like me" and you have, what, 10 to 20 grands lying around?
Yeah, but mere mortals *can* go that fast. They just don't because $$
10-20 grand isn't enough to live forever, so he's still mortal! ;)
Very well produced!
Perhaps in a future episode we could see how fast Ollie can go being limited to "enthusiast" level wattages that us mear mortals can produce. Could be a good gear swap video done with real world testing.
Great effort... only way I can get close to such numbers is on the indoor trainer... wind resistance is the biggest factor... could save another 5-10 watts by shaving (your face)... that is a frontal area factor that would create some turbulence and upset the airflow...
This is an awesome presentation Ollie , I always browse back from GTN to GCN to see your videos :-) Cheers!
30mph is my top speed when I'm sprinting...
with a tail wind...
going downhill...
getting a draft
In the car
@@marcdaniels9079 that’s a bit over the top
best take up tennis then mate
@@shaldon08 nah, too much power output... considering chess instead.
He was getting a draft. That's why they didn't film it, you'd have seen he was drafting off the passing traffic.
10 miles in 20 minutes on a bike is epic.
I reduce drag on my rides by taking my wig, makeup, high heels and dress off
Wow. That comment was an experience.
The tuck is super aero though. Depending on your equipment.
I would be thrilled with 30km per hour for an extended period of time.
I can do about that for around an hour on my pretty crap mountain bike
Tho last time i checked my bike is limited to 28mph so the closer i get to that speed the more resistance my wheels turning have
Coasting and pedalling as hard as i can down the same hill the speed never goes over 28mph
Tho i do need to recheck it i replaced the green crispy slimy crap in my bike with silicon grease so im hoping for a faster top speed tho i dont have time to go test it but i will test it at some point
@Pablo Hinze there is a mechanical / physical top speed for bikes
For me i am hoping that comes down to the sticky crispy crud they used as bearing grease, Ive replaced it but cant go out and test it
But no joke my bike cannot go over 28mph, even pulling it with a car the wheels will just start sliding while still spinning as they cant turn any-faster
@@commanderoof4578 maybe you have a ebike without knowing that you have a ebike? 🤔 JK … Although it’s your words against mine hahaha
@@commanderoof4578 U might need new bearings and/or even a pair of budget wheelset and you might go over the 28 mph “mechanical/physical top speed of ur bike” mate! Orrrrr…… just buy a new bike hahaha
@@BigBrownMonke its not just my bike i tested every bike in my shead
Mine is the slowest at 28MPH
Next its 31MPH, 33MPH, 34MPH
And then my dada road-bike which i got to 55MPH on and went fuck this i ain’t going any faster and then started to slow down using
So ALL BIKES have a mechanical speed limit where the wheels actually cannot spin faster just some that is really low and others where the top speed isn’t going be hit because you will decided to slow down or keep at that speed
Ohh and all of this is down a hill by the way at 65 odd degrees that is actual 65 degrees not the road or incline crap 65 degrees where 90 would be vertical
Not gonna change 65 degs to an incline because i dont use incline for anything
These are always the best videos on GCN!
8:34 clearly your video editor used to work on The A-Team TV show 😀.
Most interesting-lots of good science & the go faster kit/cycle look a million dollars.Thanks GCN.
Ollie the hour record Last year 2020. That was a great video, you are a real asset to cycling community and GCN worldwide
Ollie is the Fred Dibnah of the GCN team. You can both see and hear his enthusiasm when he's talking technology.
Hi This is Ramesh and I am a cycling enthusiest. I do cycling everyday for 30KM and follow all the guidelines suggested by GCN. Most of the accessories used by GCN team is not available in India. Can we get some accessories for cycling use in Indian roads and provide the feedback to GCN. So, GCN can understand the performance of different accessories at different road conditions.
4:10 where he talks about the air density this applies in water in terms of the amount of chlorine, most competition pools are lower in temperature which means they're less dense as they have less chlorine where as a normal non competition pool will be warmer and have more chlorine making them denser and noticeably slower for anyone who swims at a competitive level
Assumption 1, ignore tyre squirt for the pitot tube.
Assumption 2, ignore turbulence.
Assumption 3, I'm being incredibly charitable.
Awesome video as always. Thank you Ollie
I would like to introduce a counterpoint to denser air as you are correct in regards to the down side versus less dense air. However one component that needs more analysis is denser air is more oxygen rich which means that You should be able to biometrically produce more power/watts/ improve FTP. A Vo2Max would be interesting of dense air versus less dense air with metabolic improvements That may counter arrow dynamic drag. I would be interested for anyone to comment on this. Another words taking in more oxygen rich air versus less oxygen rich air?
Don't think the amount of oxygen in the air makes any difference. As long as there is more than around 17% O2 in the air your body will absorb 4% of it. Even if you breath 100% O2 you still only metabolise 4%. Some O2 may be absorbed into the plasma as well as the red cells but that just helps transport, your body still only uses 4% of the O2.
Thank you Neil, awesome medical info!👍🏻
That's really interesting on my TT bike (which is just a modified aluminium road bike with a disk and tri bars) I can get low and aero myself but the bike is not aero at all. in one of my latest TT's I did a 10 in 23:26 with an avg power of 319watts. it goes to show how aerodynamics can help so much. (my excuse to ask my dad for a proper TT bike)
Very informative video! At the risk of being Captain Obvious, 30 mph is above the pay grade of most of us. While the power differential between aero and non-aero setups is massive in this test, for us 30 KM/HR (not mph), that differential on a percentage basis will be much more modest.
New and updated choice of music is 👌
I posted this in the Velomobile Facebook forum this morning, and some recreational velomobile riders reckon they could beat Ollie. Can you do a video with either that Milan or Alpha7 velomobile you borrowed from Velo-Ads? I think it'd be a cool match-up.
If that course is the one I think it is (A40 dual carriageway between Abergavenny and Raglan) then I'm positive I saw Ollie doing this. Not my idea of a particularly safe course due to the trucks, plenty of opportunities to pick up a tow though! There must be a faster course you can send him to, see if he can crack 35mph!
Hey @Global Cycling Network , when are we going to see more Velomobile stuff?
I need some motivation to build one and hassle our local roadies (because I've got no hope in a fair fight, I'd need a couple of years training)
Fantastic video! Just out of curiosity, how much did it cost to prepare for this effort? I don’t think most of us can afford the equipment Ollie used to reach this impressive achievement. So what was the cost of all of this Ollie?
I did it. Got so eager watching this, and always wanted to take the timetrialer in me to the full potential. I promise you, its expensive. at least 13000pund I have spent, but worth every penny. I became the Norwegian, and Nordic champion I Masters class, and In the Nordic one beating all other participants with 30sec or more over 28km. I am 47years and the classes starts at 30 ;-). The bike in this form is a true dream. You can cruise around with it at 40km/h barely pedaling if its flat ;-). Silly, silly fast if you get into the right position. Sure other bikes also are, but I never tried any other bikes. Just went for this one when I saw Oliie was that fast. 48km/h......
But mine is UCI legal.
ah. GTN uploaded the anti-aero video, and ollie is here. Coincidence? I think not!
fantastic time! my pb in 1974 was 24 minutes 30 seconds for 10 miles (road bike of course)
rapid on old bikes that!
We love your excitement when you ride a bike. It is inspiring.
20m@ 326w no sweat, breathing normally. Ollie World Class. 👏🏻👏🏻🏆👏🏻👏🏻
Well done, Fair play, despite all the aero stuff, doing 30 mph for a ten is a seriously good ride.
TV trickery abounds.
Not even puffing, Ol'boy rides in, 'I dd it.'
Aerolab lease their tech and the price is nothing short of hilarious. 430W for 4 minutes is damn impressive. Your FTP was 300W I thought? Well done on cracking the 30 mph barrier, that's inspiration for me for sure.
it’s important to distinguish the road bike from the tt bike when talking about ftp. climbing a mountain i could do more at the moment. i’m always less on the tt bike. but feel free to follow on strava. all the numbers are on there.
@@GCNuser123 yeah I am less on the TT bike too, I get you.
This is a SWYTCH bike!
no, THIS is a SWYTCH bike!
😂
Dear god, If I never hear about swytch again.
Next GCN sponsor
I once got an e-mountain bike to 48km/h on a road... The wild thing about that is that the limiter on e-bikes in Canada stops at 38km/h, so anything beyond that is done entirely *by the rider* on a 45lb full-suspension, non-aero bike. Pretty impressive hey?
I did it for one city block lol
Sparkling water...in a fancy glass bottle...in a pub garden...?
Your Yorkshire card has been revoked.
Years ago when I was really into all the numbers, 300W would barely crack 1 hr for a 40K (on a TT bike) for a light rider. That's 25 MPH.
Without a fancy gadget I estimate my CDA as brick.
I estimate mine to be 16 wheeler semi truck. It’s all in the belly. 😁
I’m surprised no one has come up with a brake cowl like seen on MotoGP Ducati to improve aero around callipers
Well the helpful little table on the M5 site says that you need 250W to do 30mph (=483kph) on their Carbon High Racer. We don't know exactly how they got these numbers on their site but it is thought that it came from measurements.
It is worth recalling that yes, this is the bike that holds the actual hour record (not the one shown in your video which is slower) so they are not kidding about how fast it is.
And, their are people who regularly commute on this bike. So it is an eminently roadable bike.
www.m5-ligfietsen.nl/site/EN/Models/Carbon_High_Racer/
Great Effort! However.... There is a reason that the R10/17 is the fastest course in south wales - It's a dual carriageway with all the traffic assist that comes with that. The traffic is worth a significant amount of watts.
Can Ollie go back next week and ride the same TT on the road bike?
Just some fun facts: Ashton Lambies (dude who just went under 4 minutes for the 4k) CDA is around 0.16 which is the lowest ive ever heard of. When hes on a velodrome he can do 30mph at 200 watts.
3:58 swimming though denser material is a bad example, as you float higher and can push harder in denser fluids. Speed can even increase compared to water.
The main issue with the comparison in the video is the fact that it refers to difference in viscosity rather than density. Those are two different physical quantities.
@@MartinBrada all off the aspects i mentioned are possible with only density
@@malloott Correct, buoyancy obviously depends only on density. I was referring to the comparison from the video in general. Custard is not that much denser than water, swimming in custard would be more difficult primarily due to viscosity.
Comments like 'less dence air is thiner' and 'its much harder to swim through custard' are exactly the reason we love Oli: you can always rely on him to break down the science for the layperson!
4 Minute@430W is already quite fair. VO2Max in in the upper 60s with Ollie'S physique.
Why do your knees get left out of the NoPinz suit / socks combo, are they naturally more aero (I mean they are quite bony!)? Why not a full body suit (UCI?)?
Absolutely love the datageekery ! Well done Ollie !
Amazing effort Ollie!!
My partner and I met Ollie at the TT he did and its fantastic to see the results. One quetsion though, how big a part does weight play? I know its not as big a factor as cda but my partner is 55kg and I'm 95kg. Frontal area, aside, how many more watts are required? the 10/17 has some gradients, I suspect this has more impact...
Seriously? 40kg more weight would require less than an extra 20 watts -- probably in the 15 or 16 watt range.
@@robertchung4914 yup there's not much meat on her bones, despressingly low cda! lol.
Is it really harder to swim through custard? Increased resistance also means your hands push back more effectively. Maybe they cancel each other out? Custard is also thixotropic so will thicken under the concentrated pressure from your hands an arms, but less so over your entire body moving forward.
admittedly i’ve not actually researched the hydrodynamic effects of human propulsion through non newtonian fluids, but i guess most people get the point i’m trying to make!
mm, milan sl does 30 mph with 130 Watt.
Ollie, your local transportation office or who ever governs your roadways may have what’s called a road friction co-efficient for the roadway you are testing on…we use friction co-efficient when we investigate serious traffic crashes on our highways in the states
What an amazing video
Ollie's videos are always great.
Swimming through custard isn't actually much worse than water. Yes, resistance goes up, but so does the force with which you can propell yourself forwards.
May have been discussed already but a more relevant metric would be watts per kilogram. Was that noted anywhere?
Did Ollie just go faster in this test than Si did on the same bike in the 2/3/4 vs 1 videos? Has the world turned upside-down?
"Sparkling water because I'm a serious athlete now".
Beer Garden. 😁
About to watch this video. As a dedicated UK tester who doesn't get near 30 mph I think this is going to be upsetting.
you could deffo do a 19 off sub 300w with good conditions on a faster course like the e2 or p881 i believe.👍🏼
For stuff like this where you can't use a chase vehicle, what about using a follow drone? There's quite a few models out there which can be set to ID an object and follow it.
@oliverbridgewood is an absolute beast all amateurs want to be him. Pure class credit to GCN 🚴♂️👌
4:03 I think Ollie volunteered for his new video idea 🙂.
gogogo @GCN does science
11:10 Quick at calculating as well !!
Well these are English roads, if he was in France he would have gone a lot faster
We should test this on a recumbent ^-^
pause the video at 3:00 , look at the date in the bottom left corner. this really is futuristic.
9th June 2021, you might read days/months in a different order where you live ;)
Serious athlete as we can see the cigarette butt put out in the ashtray!!
I'm kidding Ollie. Ha
Superb ride! Well done
ollie looks like the first guy to get dropped when Vader boards the ship
4:00 for the swiming thing it acctually doesn't change anything in what type of fluid you swim because in a thiner one you can't push your self as far as in a thicker one bur also have a smaller hydrodynamicdrag
Custard is a non-Newtonian fluid, so it is different to water, in that it behaves more like a solid on impact (side of hand stroke, kick). Same as ketchup