Not quite agreed here. I accept the claimns that a low BB aids cornering, but the effect of moment of inertia does not go away while the bike is rolling. It ceases to be the only force with influence, but it doesn't go away. True, it is the only force involved during a trackstand, ignoring wind.
Are you saying gyroscopic forces become dominant? Do you have any numbers to support that?
Ken Freeman
-----Original Message----- From: classicrendezvous-bounces@bikelist.org [mailto:classicrendezvous-bounces@bikelist.org] On Behalf Of John Betmanis Sent: Sunday, December 31, 2006 11:13 PM To: classicrendezvous@bikelist.org Subject: Re: [CR] Was: Woodrup frames. Now: BB height, etc.
At 05:36 PM 12/31/06 -0800, Jerome & Elizabeth Moos wrote:
>I agree about the cornering advantage of a low BB, leaving aside the
>pedal
clearance. The broomstick analogy nontwithstanding, I think it is well
established that a low center of mass aids cornering
Agreed. The stability of a bicycle is largely a functiion of the gyroscopic effect of the wheels turning. THe broomstick principle would only apply to trackstands.
John Betmanis
Woodstock, Ontario
Canada