Ti bikes are flexy?

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07-08-05 | 09:10 AM

#26

bkrownd

kipuka explorer

Joined: Apr 2004

Posts: 3,297

Likes: 2

From: Hilo Town, East Hawai'i

Bikes: 1994 Trek 820, 2004 Fuji Absolute, 2005 Jamis Nova, 1977 Schwinn Scrambler 36/36

Quote:

Originally Posted by cydewaze

So you're saying it takes no energy to flex the bottom bracket to the side? I think I disagree.

The question isn't whether it takes energy to cause the flex, but rather where the energy stored in the flex goes when it is returned. (like a spring)

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-=- '05 Jamis Nova -=- '04 Fuji Absolute -=- '94 Trek 820 -=- '77 Schwinn Scrambler 36/36 -=-
Friends don't let friends use brifters.

07-08-05 | 09:35 AM

#27

Murrays

Mad Town Biker

Joined: Jun 2004

Posts: 974

Likes: 0

Quote:

Originally Posted by cydewaze

So you're saying it takes no energy to flex the bottom bracket to the side? I think I disagree.

No, he's saying that the energy expended is stored in the deflection of the frame and returned when the peddle force is reduced. Sort of like a person on the end of a bungee cord; it takes energy to accelerate the person towards the ground, but that energy is stored in the bungee and returned, accelerating the person back up.

-murray