An Interesting Comparison: Old School vs. New
11-11-10, 02:09 PM
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An Interesting Comparison: Old School vs. New
I haven't seen this video posted here and I found it interesting. It's a 10k TT on a 50's bike versus a 2009 TT specific bike. Almost two minutes difference!
11-11-10, 04:14 PM
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About 2.5 mph difference. The majority of that is position. And unless that course had more vertical than it looked like, that guy is not very fast (about 22.6mph for 6 miles on the modern bike.)
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11-11-10, 04:25 PM
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Definitely position has a lot to do with it.
He mentions the pedals as being a real factor.
He mentions the pedals as being a real factor.
11-11-10, 04:33 PM
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I've ridden on that track. The steep part is around 20% incline for a couple hundred metres. Lots of curves.
11-11-10, 05:55 PM
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Interesting video, but that older bike looks way to big for him.
Like mentioned above, the position has a lot to do with it. It's hard to get aero on a frame that's too big.
Also, how good of a rider is he? There are a lot of variables that still need to be taken account of.
Like mentioned above, the position has a lot to do with it. It's hard to get aero on a frame that's too big.
Also, how good of a rider is he? There are a lot of variables that still need to be taken account of.
11-11-10, 06:00 PM
#6
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Even I could do that. My last flat TT was over 20 miles in length (more like 30km), I averaged about 23 mph. But I'm reasonably confident that I'm probably 2 mph faster on the TT bike than I am on my regular road bike.
11-11-10, 06:44 PM
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As mentioned above, there were too many variables that the test did not control for. Frankly, I would have expected a much larger difference.
11-11-10, 06:44 PM
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Doesn't look or sound like he was using proper shoes & cleats on the old bike.
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11-11-10, 08:46 PM
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I'm not surprised by the difference. I'd wager that the result would be consistent over any number of paired attempts.
11-11-10, 11:31 PM
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Apples and oranges. It'd have been better to use two road bikes, preferably the same brand. He says in the video, it was all the pedals.
11-12-10, 10:46 AM
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The difference was about 2.5mph. Aerobars are probably more than half of that. TT helmet a couple of tenths mph, skinsuit a tenth or two. More aero wheels (and those weren't super aero) a few tenths mph. The weight savings probably worth 30 seconds or so given that it appears there was some elevation change.
The age of the bike really doesn't have much to do with it. The time gap would likely have been about the same between a modern road bike, and the TT bike, with maybe a few seconds different for wieght and tires.
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11-12-10, 10:49 AM
#13
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2+ mph is a HUGE difference just from switching bikes. TT bikes make you faster, but they don't make you 5 mph faster. 2 mph is about right.
11-12-10, 10:53 AM
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Well, you have to consider the source.
"Men's Fitness" magazine is probably on a lot surer footing when it comes to comparing Viagra and Cialis.
The riders comment about the pedal being a big factor made me wonder how well he was strapped in. Seems I could get a lot of lift when I had my straps tight. Never used one myself but I seem to recall a cleat like thing that would grab the back end of a quill pedal to really lock your foot in.
"Men's Fitness" magazine is probably on a lot surer footing when it comes to comparing Viagra and Cialis.
The riders comment about the pedal being a big factor made me wonder how well he was strapped in. Seems I could get a lot of lift when I had my straps tight. Never used one myself but I seem to recall a cleat like thing that would grab the back end of a quill pedal to really lock your foot in.
Last edited by ahsposo; 11-12-10 at 10:59 AM.
11-12-10, 10:55 AM
#15
Peloton Shelter Dog
Yeah, besides, that 'test' is crap, WAY too many variables. Meaningless, i.e., perfect for the 41.
But here's an observation: I'm slow, when I do TT's my time puts me in the middle of the Cat 5's, lower half of the 4's, etc. So compared to guys that are Cat 2/Cat 3 and have some talent, they're going to crush me in a TT. But in my last TT that had a separate cannibal division, my time (on my Cannondale TT rig) was faster than all but 3-4 of the 20+ cannibal entrants, who were riding regular road bikes. So on my TT bike, I'm as fast as a good Cat 3 on a regular road bicycle on the same course. Like I said, I think the TT bike/aero helmet gives you like +2 mph over a regular road bike
on a flat course, less on a rolling to hilly course.
But here's an observation: I'm slow, when I do TT's my time puts me in the middle of the Cat 5's, lower half of the 4's, etc. So compared to guys that are Cat 2/Cat 3 and have some talent, they're going to crush me in a TT. But in my last TT that had a separate cannibal division, my time (on my Cannondale TT rig) was faster than all but 3-4 of the 20+ cannibal entrants, who were riding regular road bikes. So on my TT bike, I'm as fast as a good Cat 3 on a regular road bicycle on the same course. Like I said, I think the TT bike/aero helmet gives you like +2 mph over a regular road bike
on a flat course, less on a rolling to hilly course.
Last edited by patentcad; 11-12-10 at 10:59 AM.
11-12-10, 10:56 AM
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^^ Toe straps with cleated cycling shoes are every bit as efficient as clipless. Just more of a PITA.
Using cleated shoes likely would have narrowed the gap a tad.
Using cleated shoes likely would have narrowed the gap a tad.
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11-12-10, 11:01 AM
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I make this comparison on a regular basis.
1973 Schwinn road race Paramount about 23 lbs, 10 speed w/ 52 & 49 half step Campy record drivetrain and a 13-24 5 speed free-wheel.
2008 made-by-Lynskey Planet X titanium road bike. about 18 lbs, 20 speed w/ 50 & 39 standard 105 & Ultegra drivetrain and a 11-23 10 speed cassette.
About a 1 mph difference on most flat routes, more on hilly routes.
1973 Schwinn road race Paramount about 23 lbs, 10 speed w/ 52 & 49 half step Campy record drivetrain and a 13-24 5 speed free-wheel.
2008 made-by-Lynskey Planet X titanium road bike. about 18 lbs, 20 speed w/ 50 & 39 standard 105 & Ultegra drivetrain and a 11-23 10 speed cassette.
About a 1 mph difference on most flat routes, more on hilly routes.
Last edited by Barrettscv; 11-12-10 at 11:09 AM.
11-12-10, 11:13 AM
#18
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Very interresting.
I wonder if having the extra gears on the new bike help out much? I know it makes my legs feel better when I can find that ideal gear for my cadence.
Also, 2 mph is pretty significant considering that is about 10% faster for about same effort.
I wonder if having the extra gears on the new bike help out much? I know it makes my legs feel better when I can find that ideal gear for my cadence.
Also, 2 mph is pretty significant considering that is about 10% faster for about same effort.
11-12-10, 11:16 AM
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I make this comparison on a regular basis.
1973 Schwinn road race Paramount about 23 lbs, 10 speed w/ 52 & 49 half step Campy record drivetrain and a 13-24 5 speed free-wheel.
2008 made-by-Lynskey Planet X titanium road bike. about 18 lbs, 20 speed w/ 50 & 39 standard 105 & Ultegra drivetrain and a 11-23 10 speed cassette.
About a 1 mph difference on most flat routes, more on hilly routes.
1973 Schwinn road race Paramount about 23 lbs, 10 speed w/ 52 & 49 half step Campy record drivetrain and a 13-24 5 speed free-wheel.
2008 made-by-Lynskey Planet X titanium road bike. about 18 lbs, 20 speed w/ 50 & 39 standard 105 & Ultegra drivetrain and a 11-23 10 speed cassette.
About a 1 mph difference on most flat routes, more on hilly routes.
11-12-10, 11:27 AM
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11-12-10, 11:28 AM
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Same with me. I did something similar with a 1987 Specialized (2X6 with downtube shifters) and a 2005 Seven Ti with 12x23 gears on a 21 mile loop over moderately rolling hills. My times were always very close to each other.
11-12-10, 11:33 AM
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11-12-10, 11:39 AM
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11-12-10, 12:13 PM
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When someone posted a little while back about their Cervelo being faster than their Roubaix, the consensus was that it was because he had a much more agressive position on the Cervelo and no drop at all (maybe even higher bars) on the Roubaix. I would bet that Barrettscv's observed speed difference could be explained by fit and position.
11-12-10, 12:18 PM
#25
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When making a comparison like this there are a few things to consider. A lighter modern bike will accelerate more quickly than a heavier bike, the modern bike will have a better selection of gears to suit a rider. Top speed difference can be very little however, if running the same gear inches. At cruising speed on my 30 lb. Raleigh the heavy wheelset is actually working for me.
For a truer comparison wear a backpack with a ten pound weight.
Brad
For a truer comparison wear a backpack with a ten pound weight.
Brad