Old 09-19-10 | 07:52 AM
  #5  
DaveSSS
Senior Member
 
Joined: Sep 2008
Posts: 7,296
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From: Loveland, CO

Bikes: Cervelo Rouvida x 2

Originally Posted by rangerdavid
thanks Namenda,



So looking at that picture, if I go from a 45 to a 43, which would move the rake back towards the bike a little, then the steering becomes more twitchy? How much difference would a 49 make in stability if I got that from the current 45??
The bike will become less twitchy due to a larger trail. You would not want to buy a fork with more offset, since the trail is already on the small side, to start with.

The formula for trail is R/tanH - (offset/sinH), where R is the tire radius and H is the head tube angle. All fork offset reduces trail, so the more offset the smaller the trail and the quicker the steering.
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