's Forum Archives - Components

Archive Home >> Components(1 2 3 4 5 6 7 8 9 10 )

Upgrading Trek 5200 Fork - what rake?(5 posts)

Upgrading Trek 5200 Fork - what rake?PDSM
May 21, 2001 4:31 PM
I am thinking of upgrading the Icon fork on my Trek 5200 to an all-carbon fork. I was thinking of either the Reynolds ouzo pro or the Look HSC 3 (it needs to be a 1 1/8 steerer). The rake on the Icon is 43mm; the Reynolds is available in this rake but the Look only comes in 45 and 40mm. Is this a big reason to go for the Reynolds, or will 2or3mm not make a noticeable difference (or even improve things)? Are there any other reasons to choose one over the other - I know the Look is lighter, but the Reynolds is supposed to have a nice ride. Any advice would be appreciated. Thanks.
40mm rake....dave
May 21, 2001 7:49 PM
Would probably be the safest choice. Changing to a 40mm rake will slow the steering slightly. With the Trek's 73.8 or 74 degree head tube angle (depending on frame size), the steering should still be plenty quick. Using a 45mm rake might make the steering a little too twitchy, unless that's what you're after.
40mm rake....won't that make it more sensitive?PDSM
May 22, 2001 8:28 AM
I figure decreasing the rake will shorten the wheelbase, and the offset of the front axel in front of the head tube - won't that make the steering more sensitive/twitchy?
40mm rake....won't that make it more sensitive?Erik away from home
May 22, 2001 8:39 PM
No, the lower the rake the slower the handling. I when to a 45 on my Klein it got even quicker, I happen to like it but YMMV. 43 seems to be the standard on stock stuff these days.
no!...trail formula .....dave
May 22, 2001 8:56 PM
Trail = tire radius/tanH - rake/sinH. Where H equals head tube angle. Steeper head tube angles or increases in rake decrease the trail, which quickens the steering.