Re: [CR]Thoughts on drilling track forks

(Example: Bike Shops:R.E.W. Reynolds)

Date: Sat, 16 Dec 2006 20:54:05 -0600
From: "John Thompson" <JohnThompson@new.rr.com>
To: classicrendezvous@bikelist.org
Subject: Re: [CR]Thoughts on drilling track forks
References: <121620062018.602.458454AD000DF1CA0000025A2207020853020E000A9C9D0A08@comcast.net> <75d04b480612161230t15b261f7h5c85071348ae87b2@mail.gmail.com>
In-Reply-To: <75d04b480612161230t15b261f7h5c85071348ae87b2@mail.gmail.com>


Kurt Sperry wrote:
> Isn't it a consensus view that the actual deflection apparent while
> braking- and hence presumably the attendant stresses- actually take
> place above the fork blades? If this is in fact the case, I'd expect
> whether the fork blade sections are round or oval to be essentially
> immaterial to braking.

No; the momentum of the bike provides a forward force which is resisted by the tire's contact with the ground. This is transmitted through the hub to the fork, and flexes the fork blades backward toward the down tube.

--
John Thompson (john@os2.dhs.org)
Appleton WI USA