I've thought about crank stiffness a lot, especially when considering how it impacts power transfer and the overall feel of a bike. Personally, I think it's one of those factors that matters more to racers or riders who demand absolute efficiency from their setups. For most people, though, the difference between a stiff crank and a slightly less stiff one might not be noticeable unless you're really hammering on the pedals.
Coming to the problem from the perspective of mechanical efficiency is absolute GCNity. But hey, who would care to watch an episode on the real benefits of improved front derailleur shifting, longer life of bottom bracket bearings and reduced foot supination.
For 99.6% of riders, crank stiffness is utterly moot. Any bike crank on any modern bike, and any crank newer than cottered, is just fine. Unless it's one of those Shimanos that falls apart. It's stiff until it shatters.
I was looking for that comment! Thank you! I had to check 15 times if I didn't miss it somehow in the video when I didn't see any comment on that matter.
The editor ALWAYS does this. Even on the rare occasion the editor does bother to show what they are talking about they flash it up for a few seconds then take it away.
"So they're sentient and require nourishment." Ollie is such a nerd. I will always be a fan of his after he mentioned Bertrand Russell mid-show many episodes ago.
I am the proud owner of a custom 2023 Battaglin Portofino G (limited edition of 70, customized for me by Giovanni Battaglin himself and delivered in July of 2024). I’ve owned over a dozen top spec bikes over the last 40 years (including four bespoke frames) and the Battaglin is in a class by itself. I wholeheartedly recommend their bikes and if you can spare the cash, just go for it - you won’t regret the purchase.
One of the advantages of carbon fibre is that when it unflexes more of the energy is returned than most materials. Still better to have less flex especially when any energy return will come at a point of lower force in the pedal cycle where it's likely that the foot is pushed rather than the crank, and especially on a component that is crucial to biomechanics.
Throwing away all the jokes that came into my head about crank stiffness I do think crank stiffness is really only an issue for elite pro riders. The topic is fascinating, however. I think most of us, especially us "Old Guys:, are just happy just being able to get out and ride. Love your show, guys!
I will be watching this video with great care. This is a topic that is very important to me. Back in 2019 when I first started cycling I experienced 3 crank failures in a row across 3 separate bicycles. I swear I'm not making that up. It was comically unlucky. Since then I have always done tons of research before buying cranksets/crank arms lol.
Well, you asked for it... 1) I imagine they took into account where the centre of pressure would be in a cleat-pedal system, but in that picture at 3:45 it looks to be further out than it would be on an actual bike with clipless pedals. 2) this looks like a static test, as in nothing is allowed to move, so 100% of the applied force goes into deforming the materials and none is allowed to be transferred to the BB, the frame, and the opposite crank which would IMHO tend to artificially stress the crank being loaded. I know that isolating a variable is necessary, but on the other hand an actual bike will have many flex points with different stiffness profiles reacting together as a system. So, not sure how true to life that makes it. 3) applied force is only part of what can deform the materials; rate of loading is also critical. Do we know what that was and how they arrived at whatever rate they used? 4) most importantly, on a bike if you're putting down 800+ watts then very likely your cadence will be well in excess of 100 RPM. What this means is that the peak loading at the 3 o'clock - 9 o'clock position will only last a small fraction of a second. Do we know how long the force was applied here? Caveat: I am not an engineer of any type. #rabbitholeenabled.
This was a wonderfully nerdy show - loved it! Regarding crank stiffness and the power loss, I think you have to consider where in stroke the crank flexes and where it flexes back. It flexes most at max force and flexes back where you lift of the force, will it then not just push your foot back. I would go for the stiff crank as long as it is aero and no too heavy. 🤓
I would really like to see tests of using after-market chainrings on other crankarms - like using Pass Quest chainrings and others on Dura ace and Sram crankarms. And also test of cranksets with spider power meters vs no power meters.
The left crank is,the only side I've ever broken in my 41 years of riding. I've broken them all Campy D-ace Suntour mostly square BB octalink not so much just one 105 in that gen.
And a correct length crank (meaning shorter crank) will be stiffer than a longer crank of equal cross section. And what’s even better is that you make more power with a shorter crank by higher revs and less torque anyway.
Got an Orbea Terra thx to my works bike leasing plan but was disappointed that they still only have cranks starting from 170mm, now saving up to get a 160mm crank fitted.
In case you put a superstiff crank on your bike, don't expect that you gain all watts that are "lost" with a less stiffer crankset, as other in the power transmission involved parts will bend slightly more, such as the frame, the chain, th spokes of the rear wheel (as far as you don't ride a rear Trispoke or disc wheel). That is why I stick to my Campagnolo Record carbon square taper cranks - I fear that a stiffer crank (e.g. the later Campagnolo Ultra torque cranks) will cause more bending (slightly too much) of my two Giant Cadex CFR frame based tt bikes, and cause a frame failure, while keeping the square taper cranks will keep the frame bending in a non-critical dimension.
25:20 the thing is, "performance" is always going to be at the expense of "durability" ... it's the old "fast-vs-good-vs-cheap" equation, cycling edition: "efficient-vs-durable-vs-cheap" and I guess "efficient" can be split into some range of [light-vs-Stiff]
According to Dan over on GCN, Ollie is nearly 40! Can you believe it - all his own hair and a full set of teeth and he's nearly 40 - that's it, I give up - I'm off up the trails on my mountain bike.🎄 All the best, happy Christmas and happy new year to everyone, regards Tony Sadler South Wales UK 🏴🇪🇺
Crank stiffness is a biomechanical issue. If the crank flexes, it allows the pedal to twist out of plane and puts stress on your knees. Its just an alignment issue.
xd-15 bearings have been around for like 10+ years now? The real thing that matters is that both the bearing race and bearings are made of xd-15. Was always my top choice spec for bottom brackets but couldn't justify the price. Industry 9 also offers them as a hub upgrade for $$
I'm not actually sure you get all of the non-hysteresis energy back from the crank; if you imagine a very compliant crank it would absorb your strong push downward without applying all that into the chain and then when it un-flexes it does so into your foot going horizontal where you are unable to hold back that unwinding force. So it may be much more important than the frame flex where the frame has to lift your weight to un-flex.
As someone with an older bike with quick releases and a dedicated trainer tire using a wheel-in trainer, the SRAM trainer would mean I could leave my road tire on the back wheel and not have to fiddle with the centering of the wheel when taking the bike on and off a wheel-off trainer should I upgrade to one of those. The other nice thing is a lot of these new wheel-in trainers don't like a 126mm rear wheel spread. This design eliminates that, as well.
Doesn't the rebound of the crank arm deflection occur generally from the 6 - 12 o'clock arm position when arm moving upwards and generally not transferring energy to forward motion?
Red-Green colour deficiency is the commonest type of colour blindness, specifically deuteranomaly. It's mild and just makes those colours harder to discriminate. So chances are Ollie can see brown just fine. Sorry, Cuthbert.
back in the 60's, I was the fastest kid on the block and now I know why. my Schwinn Stingray had solid steel cranks, and this whole time I thought it was the banana seat and cheetah slick. 🤣
@@kennethward9530 the elementary school we all went to was only a couple blocks away and during the summer while it was closed, as soon as the sprinklers went off, we were out on the ball field doing just that.
Speaking of crank length and stiffness, I wonder if a shorter crank would be stiffer. I am 1.9m and 90kg, but most of my height is in my torso. I’ve been thinking about switching from 175 to 170mm cranks, and I would also appreciate extra stiffness. Do you guys think that given the shorter lever arm, shorter cranks would be noticeably stiffer?
Wrong Ollie. Only taking the through axle out is way faster and easier than taking the whole wheel out. Not only is there a speed factor, but there's also the consideration of bike care and maintenance. The less you take something apart and put it back together the better. If this SRAM trainer works it'll be a win. No more faffing around with the wheel on and off. Get on, warm up, go ride, quickly/easily put it back on, cool down. Win after win after win. As someone who can't leave their smart trainer setup in the same spot all the time, I'd be in on this. I have to set it up everything I spin. Take my money! 😄
I have a thought about SRAM's trainer. How do you mount a bike with a UDH or T Type rear mech? As the UDH Is getting common on other bikes. Not just mountain bikes. Plus I wouldn't be surprised if SRAM bring out a T Type read and gravel rear mechs.
Could the Sram?Shimano discrepancu be due to the integraton of the shimano arm into the spider? And no Ollie...taking that wheel out is a PITA!!! Reason i dont use my trainer more!!! lol
Someone please explain to Arnold what being colorblind actually means, please. Though it varies from person to person, most colorblind people are just able to distinguish a smaller set of colors than what the majority of humans can see. Almost all colorblind people are able to distinguish some colors, so Ollie distinguishing light brown from black is consistent with him being colorblind.
When I can put out 1000+ watts out of the saddle, I'll be concerned if my crank stiffness is hurting me. At 70 kilos and 72 years of age, not a problem.
Hi Ollie and Alex, my question as a not scientific view and thinking more mechanical, is there a possibility the rebound from the flex in the crank contributes to the output of power?
Pronounced "oh-fash-eena bat-tahl-een".... Ordered my retirement bike from them back in 2018, the Power+C (predecessor to the Portifino-R), pretty awesome ride!
Hi fellas , great content... I just wanted to ask if you guys could talk about carbon chainrings vs traditional ones ,the pros and cons . Love to hear you guys feedback .. greetings from Toronto ✌️🤙
If a crank returns the energy absorbed, at the bottom of the stroke wouldn't that help with eliminating the dead spot ? 🤔. It maybe something that can be engineered in just for that, after all weren't elliptical chainrings supposed to help with this, or is this just a case of a solution searching for a problem ?
What was the point of telling us how amazing the new Battaglin bike looks and how gorgeous the polished lugs are... when you didn't actually show us a picture of it. Is the editor been into the Christmas drinks already and just forgot to show a picture of the bike in the actual segment?
Have you thought about crank stiffness much? 💭 What are your thoughts on this week's hot tech? Let us know! 👇
I've thought about crank stiffness a lot, especially when considering how it impacts power transfer and the overall feel of a bike. Personally, I think it's one of those factors that matters more to racers or riders who demand absolute efficiency from their setups. For most people, though, the difference between a stiff crank and a slightly less stiff one might not be noticeable unless you're really hammering on the pedals.
Coming to the problem from the perspective of mechanical efficiency is absolute GCNity. But hey, who would care to watch an episode on the real benefits of improved front derailleur shifting, longer life of bottom bracket bearings and reduced foot supination.
Crank Stiffness, not so much. But I do think about Tacos and Burritos a lot. 😁
Yes, when I learned that my Shimano hollowtech crank may put me in hospital.
For 99.6% of riders, crank stiffness is utterly moot. Any bike crank on any modern bike, and any crank newer than cottered, is just fine. Unless it's one of those Shimanos that falls apart. It's stiff until it shatters.
Ollie rocking a strong Flock of Seagulls game today.
Olly's hair reminds me of a certain scene from 'There's Something About Mary'.
😂 only old farts remember that exact scene
Hey, I get that reference!
Me, and Captain America, probably 😂
looks like he is from the band A Flock of seagulls
Glad he lost his silly backwards cap in the move, though.
It’s definitely not aero
For god's sake, show the Officina bike lol. You 2 drooling over it on the laptop and nothing for us to see
the drool got into the laptop
I was looking for that comment! Thank you! I had to check 15 times if I didn't miss it somehow in the video when I didn't see any comment on that matter.
The editor ALWAYS does this. Even on the rare occasion the editor does bother to show what they are talking about they flash it up for a few seconds then take it away.
This video just reminds me how often my family calls me a stiff ol crank. They quit testing me, though; they know I am the crankiest stiff.
Gold chain fist bump! I miss Manon...
The look on Alex's face when he realizes his storage unit full of Dura-ace cranks isn't as stiff as Ultegra. Priceless
Ollie is doing an impression of the lead singer from 'A Flock of Seagulls ' band.
And I ran, I ran so far away
I just ran, I ran all night and day
I couldn't get away
̼̼
@@gcntech no..there's no running on GCN. You're thinking GTN.
@@J.Relford no running when it comes to Ollie... GTN will show this very soon!
Tip to myself : get a fancy photo from a bike manufacturer's website and upload to the bike vault. Easy supernice!
Out of topic but does one of them trying to look like Wolverine?
100%
I presume Dr Ollie slept rough last night and was dragged backwards through a hedge! (My late Gran's favourite saying when I was a bit untidy)
Amazing restraint shown guys. You never once asked " are you concerned about the stiffness of your crank?" Hu Hu Hu!
"So they're sentient and require nourishment." Ollie is such a nerd. I will always be a fan of his after he mentioned Bertrand Russell mid-show many episodes ago.
The bike frame flexes a lot more than the crankset.
The frame AND bottom bracket stiffness matters more than the cranks lol. Then you gotta add the wheel stiffness also
I am the proud owner of a custom 2023 Battaglin Portofino G (limited edition of 70, customized for me by Giovanni Battaglin himself and delivered in July of 2024). I’ve owned over a dozen top spec bikes over the last 40 years (including four bespoke frames) and the Battaglin is in a class by itself. I wholeheartedly recommend their bikes and if you can spare the cash, just go for it - you won’t regret the purchase.
Finally good sound 😊Sound Tech
Thanks Alex , Dr O , and crew .
I enjoy the show as ever I do. Thank you guys.
My girl says that she prefers a stiff crank over a lightweight one.
It's what you do with it that counts ....
Great show fellas, you two do make a great pair
One of the advantages of carbon fibre is that when it unflexes more of the energy is returned than most materials. Still better to have less flex especially when any energy return will come at a point of lower force in the pedal cycle where it's likely that the foot is pushed rather than the crank, and especially on a component that is crucial to biomechanics.
Excellent analysis of the SRAM trainer - correctly identified as a joke that won't/can't be commercialised. Ever!
Nice video guys, but the banter made it a 'SUPER NICE'.🔔😉
Astana's paint designer (or whatever the technical term is) is top tier. They've always have cool paint jobs.
the last one was 10 times better
Did Ollie shack up last night in the GCN tech booth? Looks like he had a rough night at the pub and just woke up lol. We've all been there.
he was locked in, too much talk about aero gains
At this point Olly being colour blind is as convincing as that Time bike not being a press photo. Give it up as a bad job mate 😂
Throwing away all the jokes that came into my head about crank stiffness I do think crank stiffness is really only an issue for elite pro riders. The topic is fascinating, however. I think most of us, especially us "Old Guys:, are just happy just being able to get out and ride. Love your show, guys!
Proud to continue to workout during surgical procedures. ❤
My wife laughed when she heard the opener to this video ❤❤❤❤
I will be watching this video with great care. This is a topic that is very important to me. Back in 2019 when I first started cycling I experienced 3 crank failures in a row across 3 separate bicycles. I swear I'm not making that up. It was comically unlucky. Since then I have always done tons of research before buying cranksets/crank arms lol.
Ollie is starting to look more and more like Ace Ventura, i'm digging this!!
I suspected i wasn't the only one to think so :D
Well, you asked for it...
1) I imagine they took into account where the centre of pressure would be in a cleat-pedal system, but in that picture at 3:45 it looks to be further out than it would be on an actual bike with clipless pedals.
2) this looks like a static test, as in nothing is allowed to move, so 100% of the applied force goes into deforming the materials and none is allowed to be transferred to the BB, the frame, and the opposite crank which would IMHO tend to artificially stress the crank being loaded. I know that isolating a variable is necessary, but on the other hand an actual bike will have many flex points with different stiffness profiles reacting together as a system. So, not sure how true to life that makes it.
3) applied force is only part of what can deform the materials; rate of loading is also critical. Do we know what that was and how they arrived at whatever rate they used?
4) most importantly, on a bike if you're putting down 800+ watts then very likely your cadence will be well in excess of 100 RPM. What this means is that the peak loading at the 3 o'clock - 9 o'clock position will only last a small fraction of a second. Do we know how long the force was applied here?
Caveat: I am not an engineer of any type.
#rabbitholeenabled.
This was a wonderfully nerdy show - loved it!
Regarding crank stiffness and the power loss, I think you have to consider where in stroke the crank flexes and where it flexes back. It flexes most at max force and flexes back where you lift of the force, will it then not just push your foot back. I would go for the stiff crank as long as it is aero and no too heavy. 🤓
@gcntech Ollie, glad you love the southwest's tortillas and burritos. Make sure to add salsa. It's the chain wax of condiments.
Sorry, but you misspelled Sour Cream, there.
My Redline BMX bike had gold anodized cranks in '81. They made me look faster. 😀
hey guy where did you hear from the new studies on cranklength at 8:41 and where can i find them
Welcome to the GCN Bed Head Show.
I would really like to see tests of using after-market chainrings on other crankarms - like using Pass Quest chainrings and others on Dura ace and Sram crankarms. And also test of cranksets with spider power meters vs no power meters.
If the crank isn’t returning to original at precisely the right time, the energy used to deflect it is wasted.
That's what I thought and I can't imagine it would do that.
@@simonstucki surely it would just push your leg up on the upstroke?
Also, am I mistaken, or does Campagnolo still make cranksets? They didn't even bother to test them???
Well that was a test dating back to May 15 2023. But anyway, thanks for digging it out since it is very interesting.
I predict that Ollie could end up looking like Boris Johnson in a few years time 😂
SRAM trainer, if the chain is lifted from the cassette, how do you change gears??
The left crank is,the only side I've ever broken in my 41 years of riding. I've broken them all Campy D-ace Suntour mostly square BB octalink not so much just one 105 in that gen.
And a correct length crank (meaning shorter crank) will be stiffer than a longer crank of equal cross section. And what’s even better is that you make more power with a shorter crank by higher revs and less torque anyway.
Got an Orbea Terra thx to my works bike leasing plan but was disappointed that they still only have cranks starting from 170mm, now saving up to get a 160mm crank fitted.
In case you put a superstiff crank on your bike, don't expect that you gain all watts that are "lost" with a less stiffer crankset, as other in the power transmission involved parts will bend slightly more, such as the frame, the chain, th spokes of the rear wheel (as far as you don't ride a rear Trispoke or disc wheel). That is why I stick to my Campagnolo Record carbon square taper cranks - I fear that a stiffer crank (e.g. the later Campagnolo Ultra torque cranks) will cause more bending (slightly too much) of my two Giant Cadex CFR frame based tt bikes, and cause a frame failure, while keeping the square taper cranks will keep the frame bending in a non-critical dimension.
Will stiffer cranks make the bb area of the frame flex more? 🤔
I'm sure it gets to a point that it's not helpful.
Crank stiffness isn't something I pay much attention to with my jelly-like legs.
I thought that stiffer was always better when it came to managing what’s down below.
🏆
25:20 the thing is, "performance" is always going to be at the expense of "durability" ... it's the old "fast-vs-good-vs-cheap" equation, cycling edition: "efficient-vs-durable-vs-cheap" and I guess "efficient" can be split into some range of [light-vs-Stiff]
10 years ago i really really cared about it. Now anything modern is stiff enough.
Paton's Precise Patents and the Patently Pedantic Pedaller
Where's Ollie this week? Amazing though that you got Hugh Jackman to sit in for him!!
According to Dan over on GCN, Ollie is nearly 40! Can you believe it - all his own hair and a full set of teeth and he's nearly 40 - that's it, I give up - I'm off up the trails on my mountain bike.🎄 All the best, happy Christmas and happy new year to everyone, regards Tony Sadler South Wales UK 🏴🇪🇺
Crank stiffness is a biomechanical issue. If the crank flexes, it allows the pedal to twist out of plane and puts stress on your knees.
Its just an alignment issue.
12:00 casette stays on the wheel. If you don't have 2 casettes this could be decent maybe
Week 92 of asking for a "The UCI has no jurisdiction here" t-shirt
xd-15 bearings have been around for like 10+ years now? The real thing that matters is that both the bearing race and bearings are made of xd-15. Was always my top choice spec for bottom brackets but couldn't justify the price. Industry 9 also offers them as a hub upgrade for $$
I'm not actually sure you get all of the non-hysteresis energy back from the crank; if you imagine a very compliant crank it would absorb your strong push downward without applying all that into the chain and then when it un-flexes it does so into your foot going horizontal where you are unable to hold back that unwinding force. So it may be much more important than the frame flex where the frame has to lift your weight to un-flex.
As someone with an older bike with quick releases and a dedicated trainer tire using a wheel-in trainer, the SRAM trainer would mean I could leave my road tire on the back wheel and not have to fiddle with the centering of the wheel when taking the bike on and off a wheel-off trainer should I upgrade to one of those. The other nice thing is a lot of these new wheel-in trainers don't like a 126mm rear wheel spread. This design eliminates that, as well.
Dr. Bridgewood using imperial measurements for torque, duly noted.
he likes to mix it up!
Guys, why didn't you show an image of the Battaglin frameset/bike in the segment? Is it too cheap to feature on GCN?😃
Doesn't the rebound of the crank arm deflection occur generally from the 6 - 12 o'clock arm position when arm moving upwards and generally not transferring energy to forward motion?
Red-Green colour deficiency is the commonest type of colour blindness, specifically deuteranomaly. It's mild and just makes those colours harder to discriminate. So chances are Ollie can see brown just fine. Sorry, Cuthbert.
Has Ollie gone for the wolverine after a big night on the mineral water look with that hair 😂😂
🐺
back in the 60's, I was the fastest kid on the block and now I know why. my Schwinn Stingray had solid steel cranks, and this whole time I thought it was the banana seat and cheetah slick. 🤣
Cheetah slick on wet grass was the ultimate for coaster brake skids😊
@@kennethward9530 the elementary school we all went to was only a couple blocks away and during the summer while it was closed, as soon as the sprinklers went off, we were out on the ball field doing just that.
Speaking of crank length and stiffness, I wonder if a shorter crank would be stiffer. I am 1.9m and 90kg, but most of my height is in my torso. I’ve been thinking about switching from 175 to 170mm cranks, and I would also appreciate extra stiffness. Do you guys think that given the shorter lever arm, shorter cranks would be noticeably stiffer?
Pro Tip: Your crankset will be stiffer if you apply Ollie's hair mousse to the crank arms, spindle, and spider.
Ollie, A Flock of Seagulls called. They want their (not so aero) hair back. Stiff cranks is one thing. Stiff follicles is quite another.
Does crank length impact stiffness? The next experiment. One might think the longer crank will deflect more because of simple lever mechanics.
Oli looks beat up AF! Is he ok? 😅
I think 5dev is the last company that needs to talk about crank stiffness...............
Wrong Ollie. Only taking the through axle out is way faster and easier than taking the whole wheel out. Not only is there a speed factor, but there's also the consideration of bike care and maintenance. The less you take something apart and put it back together the better. If this SRAM trainer works it'll be a win. No more faffing around with the wheel on and off. Get on, warm up, go ride, quickly/easily put it back on, cool down. Win after win after win. As someone who can't leave their smart trainer setup in the same spot all the time, I'd be in on this. I have to set it up everything I spin. Take my money! 😄
You talk about the trainer, how about the chain uses a simple link to open and close to allow to to put on or takeoff the extra chain.
Is Ollie sleeping in the new set?
yes, loves it. uses the Silca Wax for his hair!
Why is the orange Pinarello resto mod bike stripped and hanging on the wall?
GCN Flock of Seagulls reboot with that hair.
I have a thought about SRAM's trainer. How do you mount a bike with a UDH or T Type rear mech? As the UDH Is getting common on other bikes. Not just mountain bikes. Plus I wouldn't be surprised if SRAM bring out a T Type read and gravel rear mechs.
for the sram PPP ... maybe you don't need to unscrew your axle and just fix or clamp it in a point ?
I like a crank as stiff as the hair product Ollie was using when they recorded this video!
So frustrating you didn’t show any images of the limited production bike.
All my cranks are made by Campagnolo, probably the best cranks in the world.
Only probably? 🙂
Blonde Homie looks like he just woke up
Could the Sram?Shimano discrepancu be due to the integraton of the shimano arm into the spider? And no Ollie...taking that wheel out is a PITA!!! Reason i dont use my trainer more!!! lol
What’s with the special Canyon Aeroad frame on the wall? It’s beautiful. Is it the Belgian national champs bike? How did you guys acquire it?
Someone please explain to Arnold what being colorblind actually means, please. Though it varies from person to person, most colorblind people are just able to distinguish a smaller set of colors than what the majority of humans can see. Almost all colorblind people are able to distinguish some colors, so Ollie distinguishing light brown from black is consistent with him being colorblind.
When I can put out 1000+ watts out of the saddle, I'll be concerned if my crank stiffness is hurting me. At 70 kilos and 72 years of age, not a problem.
Hi Ollie and Alex, my question as a not scientific view and thinking more mechanical, is there a possibility the rebound from the flex in the crank contributes to the output of power?
Getting frustrated with my bike not getting in the Vault, so much sicker than fixie you just put in
at my age the stiffness of my crank is the least of my worries.
Ollie wolverine 😂
Oliverine 🐻
Pronounced "oh-fash-eena bat-tahl-een".... Ordered my retirement bike from them back in 2018, the Power+C (predecessor to the Portifino-R), pretty awesome ride!
Hi fellas , great content... I just wanted to ask if you guys could talk about carbon chainrings vs traditional ones ,the pros and cons . Love to hear you guys feedback .. greetings from Toronto ✌️🤙
If a crank returns the energy absorbed, at the bottom of the stroke wouldn't that help with eliminating the dead spot ? 🤔. It maybe something that can be engineered in just for that, after all weren't elliptical chainrings supposed to help with this, or is this just a case of a solution searching for a problem ?
What was the point of telling us how amazing the new Battaglin bike looks and how gorgeous the polished lugs are... when you didn't actually show us a picture of it.
Is the editor been into the Christmas drinks already and just forgot to show a picture of the bike in the actual segment?
X lab is kind of already taken though in cycling for hydration.
So, were does the energy go? Heat?
I have a 2015 Dura-Ace 9000 groupset. The cranks work just fine for me.
I would be interested which chainrings are the stiffest
Maybe for wheel-on trainer users, no need for a trainer tyre and hence a spare wheel