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Crabon bikes are fast!

Road Cycling It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle. -- Ernest Hemingway

Crabon bikes are fast!

Old 06-04-19, 12:05 PM
  #26  
caloso
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Originally Posted by PepeM View Post
Hello, fellow BFers.

Lately, I have been riding my steel pedalbike a lot. It is a nice ride. Steel frame of unknown provenance, Dura Ace 10-speed groupset with downtube shifters, Ambrosio Crono wheels with Vittoria Corsa tubulars (23mm.) Solid ride all around.

Today, I took out my crabon bike out for a spin, after a year laying dormant. Focus Cayo, Force groupset, Psimet crabon tubulars. I followed the same route I rode on my trusty steelstead last week and lo and behold, I went over 2 mph faster on the crabon bike!

For the nonbelievers, I shall present evidence.

Exhibit 1, ride on the steel bike:



Note the average speed (shall not be confused with cruising speed.)

Exhibit 2, same ride on the crabon bike:



That's like a 15% gain in speed!

So, is crabon faster? Discuss.
Do you have a power meter on either bike? I notice one of the strava screenshots says estimated power and the other does not.
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Old 06-04-19, 12:25 PM
  #27  
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Originally Posted by PepeM View Post

For the nonbelievers, I shall present evidence.

So, is crabon faster? Discuss.

Without power, you have no evidence.

Nothing to discuss.
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Old 06-04-19, 12:32 PM
  #28  
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Originally Posted by caloso View Post
Do you have a power meter on either bike? I notice one of the strava screenshots says estimated power and the other does not.
Both have power meters, an old SRM on the steel bike (that doesn't play with Strava, plus it needs to be sent to Colorado for a battery replacement) and C1 chainrings for the Focus.
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Old 06-04-19, 01:44 PM
  #29  
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Originally Posted by PepeM View Post
Both have power meters, an old SRM on the steel bike (that doesn't play with Strava, plus it needs to be sent to Colorado for a battery replacement) and C1 chainrings for the Focus.
400 watts
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Old 06-04-19, 02:11 PM
  #30  
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I routinely swap between steel, aluminium, and carbon bikes.
Have never noticed any speed difference.
Not tried to make a proper study of it but I certainly would of noticed a 2mph difference.
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Old 06-04-19, 02:12 PM
  #31  
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Obviously, you droped the hamer while riding the crabon bike.
It's simple physics, really.
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Old 06-04-19, 02:20 PM
  #32  
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Originally Posted by WhyFi View Post
My geared bike can beat up your geared bike.





Next time hit him with your purse.


-Tim-
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Old 06-04-19, 02:25 PM
  #33  
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Originally Posted by TimothyH View Post
Next time hit him with your purse.


-Tim-
Man satchel. Hurrumph.
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Old 06-04-19, 02:53 PM
  #34  
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Originally Posted by WhyFi View Post
Man satchel. Hurrumph.
Murse.

Bag Type - Murses - Page 1 - ModernManBags.com
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Old 06-04-19, 03:13 PM
  #35  
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It's hard to draw any conclusion with the data being presented: 1. huge difference in average powers, measured by two different methods: power meters and strava estimates based velocity and weight.

A more fair side-by-side comparison would require a pedal-based power meter, which you would use on both bikes, and a AeroPod that measures wind speed and drag coefficient. Without the equipment, maybe you should just focus on comparing the climb (~1.4 mi x 600 ft elev gain) in you ride.
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Old 06-04-19, 08:30 PM
  #36  
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Originally Posted by hsuehhwa View Post
It's hard to draw any conclusion with the data being presented: 1. huge difference in average powers, measured by two different methods: power meters and strava estimates based velocity and weight.

A more fair side-by-side comparison would require a pedal-based power meter, which you would use on both bikes, and a AeroPod that measures wind speed and drag coefficient. Without the equipment, maybe you should just focus on comparing the climb (~1.4 mi x 600 ft elev gain) in you ride.


It's not, just lower your standards.
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Old 06-05-19, 05:42 AM
  #37  
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Originally Posted by PepeM View Post
Not a single traffic light along the way. Wind? Maybe, don't recall it being windy either day. The crabon wheels are indeed 50/60 mm deep, but Psimet said on that other thread that it doesn't matter.

Someone pointed out something important on another thread though: In the moving process, I lost one of the screws that fixes the stem in place on the carbon bike.
Can please spell carbon the right way? Its wrong every single time.
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Old 06-05-19, 05:57 AM
  #38  
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Originally Posted by MSchott View Post
Can please spell carbon the right way? Its wrong every single time.
Apologies, I can see how I might have cause some confusion. Fixed it for you:

Originally Posted by PepeM View Post
Not a single traffic light along the way. Wind? Maybe, don't recall it being windy either day. The crabon wheels are indeed 50/60 mm deep, but Psimet said on that other thread that it doesn't matter.

Someone pointed out something important on another thread though: In the moving process, I lost one of the screws that fixes the stem in place on the crabon bike.
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Old 06-05-19, 06:01 AM
  #39  
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Originally Posted by hsuehhwa View Post
Without the equipment, maybe you should just focus on comparing the climb (~1.4 mi x 600 ft elev gain) in you ride.
Steel:



Crabon:



I think it is fair to say that my conclusion has managed to withstand all the scrutiny so far.
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Old 06-05-19, 06:01 AM
  #40  
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Not sure if this matters but how fast is your shifting on those downtube shifters? I was pretty inefficient on my old Miyata.
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Old 06-05-19, 06:03 AM
  #41  
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Originally Posted by Aonex View Post
Not sure if this matters but how fast is your shifting on those downtube shifters? I was pretty inefficient on my old Miyata.
Are you suggesting that brifters might be better? Those are fighting words for some of the peeps in here.
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Old 06-05-19, 06:09 AM
  #42  
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Originally Posted by PepeM View Post
I think it is fair to say that my conclusion has managed to withstand all the scrutiny so far.
Indubitably. My thanks for putting the matter to bed.
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Old 06-05-19, 06:13 AM
  #43  
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Sorry but this has little relevance. You don't even know what kind of steel bike??? Wheels come into play, weight , etc,
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Old 06-05-19, 06:35 AM
  #44  
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Originally Posted by PepeM View Post
I think it is fair to say that my conclusion has managed to withstand all the scrutiny so far.
So, assuming you eliminated all other variables (I'm in serious doubt here) the difference in climb times should be purely down to weight. The steel time is 13.9% longer than the crabon one. I have no idea how heavy you are so I'll use my weight of 85kg and assume the crabon bike is the 6.8kg UCI weight limit. That would put the steel bike at 19.6kg or 43.1 lbs. Not an impossibly high number but I don't think anybody would be surprised that someone is faster on a 7kg bike than a 20kg one.
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Old 06-05-19, 06:53 AM
  #45  
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Originally Posted by MSchott View Post
Can please spell carbon the right way? Its wrong every single time.
Crabon is a satirical misspelling. Much like streshy pants...is for fun!

-Matt
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Old 06-05-19, 07:34 AM
  #46  
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So what, EXACTLY, is CRABON? Never heard of that material.
Jon
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Old 06-05-19, 07:44 AM
  #47  
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Originally Posted by Jon T View Post
So what, EXACTLY, is CRABON? Never heard of that material.
Jon
It's a plastic explosive that makes it easier to drope the hamer if you have massive guads.
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Old 06-05-19, 07:46 AM
  #48  
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Originally Posted by woodcraft View Post
It's not, just lower your standards.
Getting much lower than BF is difficult.
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Old 06-05-19, 08:12 AM
  #49  
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Originally Posted by PepeM View Post
Steel:



Crabon:



I think it is fair to say that my conclusion has managed to withstand all the scrutiny so far.
The powers are different, and without heart rate/cadence data, in the climb. LOL. It would be nice if the carbon bike is faster with: 1) lower power 2) lower heart rate.

BTW, I have an Evo and a CAAD 12 with very similar geometry. The EVO is 3 lbs lighter, with its components worth three times as much as the CAAD 12. I've never done any comparison based on numbers. But I could testify the difference is day and night.
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Old 06-05-19, 08:23 AM
  #50  
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Duh.
The crabon bike was obviously red.
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