Fork size help / question ??
02-26-16 | 01:33 AM
#1
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Joined: Dec 2014
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From: Burbank
Bikes: Fuji roubaix 1.1
Fork size help / question ??
Iam planing on buying a 3t funda pro fork for my Fuji Roubaix 1.1,, now im not sure which size it needs all i know is that the top of the headtube is tapered 1 1/8 and the bottom is 1 1/2 which size do i need to get? there are several options in 1 1/8 , 1 1/2 , some say just 1 1/8 im confused
Also what is rake size i dont compute this rake size??
Also what is rake size i dont compute this rake size??
Last edited by allen254; 02-26-16 at 02:01 AM.
02-26-16 | 06:21 AM
#2
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Joined: Dec 2009
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From: Houston, TX
Bikes: 1990 Romic Reynolds 531 custom build, Merlin Works CR Ti custom build, super light Workswell 066 custom build
The fork must say tapered from 1 1/8 to 1 1/2. Rake is the distance the bottom of the fork projects forward from the line through the center of the head tube most commonly these days about 43 mm on a road fork. Rake is very important with regard to bike handling and combines with head tube angle to produce the handling determining characteristic known as trail. You need to find out what rake was specified originally for your frame and match that, or else you risk really screwing up the handling of the finished bike.
There are other fork characteristics that also need to be addressed like the distance from the fork crown race to the front axle. That should match the original specification as well. Small differences are not catastrophic, but it is not like you can just ignore it either.
There are other fork characteristics that also need to be addressed like the distance from the fork crown race to the front axle. That should match the original specification as well. Small differences are not catastrophic, but it is not like you can just ignore it either.
02-26-16 | 10:45 AM
#3
Thread Starter
Senior Member
Joined: Dec 2014
Posts: 465
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From: Burbank
Bikes: Fuji roubaix 1.1
The fork must say tapered from 1 1/8 to 1 1/2. Rake is the distance the bottom of the fork projects forward from the line through the center of the head tube most commonly these days about 43 mm on a road fork. Rake is very important with regard to bike handling and combines with head tube angle to produce the handling determining characteristic known as trail. You need to find out what rake was specified originally for your frame and match that, or else you risk really screwing up the handling of the finished bike.
There are other fork characteristics that also need to be addressed like the distance from the fork crown race to the front axle. That should match the original specification as well. Small differences are not catastrophic, but it is not like you can just ignore it either.
There are other fork characteristics that also need to be addressed like the distance from the fork crown race to the front axle. That should match the original specification as well. Small differences are not catastrophic, but it is not like you can just ignore it either.
