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Bike Acceleration - Which material accelerates fast?

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Bike Acceleration - Which material accelerates fast?

Old 03-11-17, 06:38 PM
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mkwdrs
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Bike Acceleration - Which material accelerates fast?

Some bikes when you really step on the pedal you can feel the acceleration immediately. Some bikes when you really step on the pedal the acceleration is not there. Which bike materials have this immediate acceleration feeling? Which steel does and/or does not have this acceleration feeling? I am speaking of anything from road bikes to hybrid bikes to light touring bikes to touring bikes.
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Old 03-11-17, 06:39 PM
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crabon, of course.
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Old 03-11-17, 06:40 PM
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but crabon ass-plodes if you accelerate > 9.8m/s^2
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Old 03-11-17, 06:41 PM
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My titanium Litespeed accelerates as fast as my 72 y/o legs can get it to go.
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Old 03-11-17, 06:42 PM
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I think your assumption that it is the "material" is incorrect.
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Old 03-11-17, 06:43 PM
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f = ma
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Old 03-11-17, 06:46 PM
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Originally Posted by shelbyfv View Post
I think your assumption that it is the "material" is incorrect.
+1

There *are* factors that can make a bike feel quick to accelerate, like a light wheelset or just a light bike in general, but specific frame material isn't one of them.
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Old 03-11-17, 07:25 PM
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It is wholly dependent on the type of lube you use on your chain whip.
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Old 03-11-17, 07:27 PM
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Originally Posted by ckindt View Post
crabon, of course.
Only if said crabon has been curated.
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Old 03-11-17, 07:33 PM
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9 is the largest single digit number - bike with 9-speed cassette has a natural born advantage in acceleration effects. What was the question?
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Old 03-11-17, 07:42 PM
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Old 03-11-17, 07:55 PM
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Tachyon composite material would be the fastest. But it would blow up even more than carbon.
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Old 03-11-17, 09:15 PM
  #13  
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Originally Posted by Gresp15C View Post
f = ma
Here the "f" is the most important aspect. "m" is a minor issue.

Regardless of what happens to m (it's better to make it smaller), if you can increase f, you'll always improve your acceleration.
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Old 03-11-17, 09:42 PM
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Hitting the concrete street with my face has the greatest acceleration in my experience.

Probably my least favorite immediate acceleration feeling though.
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Old 03-11-17, 09:44 PM
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Muscle accelerates faster than fat.
(Posted while sitting on the couch eating cookies.....burp)
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Old 03-11-17, 09:47 PM
  #16  
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Originally Posted by Humpy View Post
Hitting the concrete street with my face has the greatest acceleration in my experience.

Probably my least favorite immediate acceleration feeling though.
Wouldn't this be deceleration?
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Old 03-11-17, 10:16 PM
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Originally Posted by Road Fan View Post
Here the "f" is the most important aspect. "m" is a minor issue.

Regardless of what happens to m (it's better to make it smaller), if you can increase f, you'll always improve your acceleration.
Indeed. This is especially the case since your total "m" includes your body mass, not just the bike. I've lost 25 pounds since last January, which is equal to the entire weight of my bike.
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Old 03-11-17, 10:19 PM
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There are two components here: One is which material makes the frame lightest. That would be carbon fiber composite. The second is how efficiently the frame transmits your leg's force to the wheels. Again, carbon fiber would win that contest. There's a reason why the TdF guys ride carbon.
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Old 03-11-17, 10:39 PM
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Rocket fuel.....
And design, weight, stiffness, gearing....all that boring engineery stuff. I'll stick with rocket fuel!
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Old 03-11-17, 10:43 PM
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Originally Posted by dedhed View Post
Wouldn't this be deceleration?
Not necessarily

It is negative acceleration.

Negative acceleration and deceleration however, are not the same thing.

Deceleration can be negative or positive acceleration.
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Old 03-12-17, 12:03 AM
  #21  
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Originally Posted by mkwdrs View Post
Some bikes when you really step on the pedal you can feel the acceleration immediately. Some bikes when you really step on the pedal the acceleration is not there. Which bike materials have this immediate acceleration feeling? Which steel does and/or does not have this acceleration feeling? I am speaking of anything from road bikes to hybrid bikes to light touring bikes to touring bikes.
I agree with others here that say it's not about frame material. Total bike weight and tire suppleness is what I notice when I "step on it".

But I'm a lightweight, so bike weight effects me more than it would a heavier rider. For the same reason, I've never felt any "flex" due to frame material, or any failure to transmit my power to the road. Total weight and tire rolling resistance is what I notice.

Bike weight matters even less for heavy riders.

Last edited by AlmostTrick; 03-12-17 at 12:06 AM.
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Old 03-12-17, 12:17 AM
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Originally Posted by dedhed View Post
Wouldn't this be deceleration?
Alternative acceleration.
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Old 03-12-17, 05:40 AM
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Originally Posted by SkyDog75 View Post
+1

There *are* factors that can make a bike feel quick to accelerate, like a light wheelset or just a light bike in general, but specific frame material isn't one of them.
I'm assuming we're talking about actual acceleration being higher, not that the bike feels like the acceleration is higher. Does the feeling of acceleration actually correlate with actual acceleration?

Anybody seen a bike computer with a self-contained accelerometer?
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Old 03-12-17, 06:40 AM
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Gearing and torque are what "accelerates" you
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Old 03-12-17, 08:35 AM
  #25  
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Originally Posted by Road Fan View Post
I'm assuming we're talking about actual acceleration being higher, not that the bike feels like the acceleration is higher. Does the feeling of acceleration actually correlate with actual acceleration?

Anybody seen a bike computer with a self-contained accelerometer?
Good point. And yes, I'm pretty sure everyone is only basing their opinion on "feel", not actual results. So yeah, not very accurate or scientific.
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