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Fork Rake's effect on handling?(6 posts)

Fork Rake's effect on handling?Ken_IF
Jun 3, 2002 10:27 PM
Hi, I have a IF Crown Jewel, which came with a 50mm offset fork. I'm interested in putting a carbon fork onto the frame, but the majority of the forks that I've found (Alpha Q, Ouza Pro) come in 43 or 44 mm offsets. I understand that this will slow down the handling of my bike by increasing it's trail. But by how much? Very significant? I have checked and overlap shouldn't be a problem for me. All that's left is my concern regarding the handling change. Thanks in advance.
re: Fork Rake's effect on handling?Nessism
Jun 4, 2002 6:05 AM
I assume you are on a smaller sized frame based on the 50 mm of offset. Changing to a lower offset carbon fork will slow down steering a noticable amount. Only you can decide if the handling is too slow however.

If it matters, Colnago uses a 43 mm offset fork for all models and the smaller frame sizes use fairly slack head angles. Not too many people claim their Colnago steers like a truck.

Ed
lots of info availDougSloan
Jun 4, 2002 6:06 AM
http://www.google.com/search?hl=en&ie=UTF8&oe=UTF8&q=bicycle+steering+geometry

do a Google search for "bicycle steering geometry" and you'll get lots of links; the above link is the result
post the vitals...C-40
Jun 4, 2002 7:36 AM
With the head tube angle and frame size, a comparison of the amount of trail can be made to other brands (like Colnago). If the trails does not exceed Colnago's, I wouldn't consider it to be excessive. Colnago has about the largest amount of trail of any brand that I know of.

If you don't know the head tube angle, it's pretty hard to make an evaluation.
post the vitals...Ken_IF
Jun 5, 2002 1:27 PM
Oops, sorry. I had run the calculations, just forgot to post them :).

It's a "stock" geometry Crown Jewel -- 72* head tube, 50mm offset. Current trail is 56.9mm (I keep calculating 55.3mm for trail, but maybe I'm using the wrong diameter for the wheel).

Thanks!
re: I had the same issues with..sfbuff
Jun 4, 2002 10:32 AM
my seven Tsunami, slack 71.5 head angle and 50 mm rake IF fork. I wanted to maintain similar handling, so I went with a 50mm reynolds ouzo pro fork (yes, they do make one), which can be found at excel sports, or for about $100 less at www.wisecyclebuys.com. They have a listing on the classifieds on this site, I used them for my fork and would recommend them highly.

-Brian