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Fork upgrade questions...(m)(4 posts)

Fork upgrade questions...(m)BoneDigger
May 29, 2002 7:59 AM
I have a 1998 Cannondale R300 that I use for training. Because it is a harsh aluminum ride (CAD 2 frame) I have been considering purchasing a carbon fiber fork. The fork that came stock on the bike is cro-moly. Would a good CF fork reduce the harsh ride any? Is it worth the upgrade?

How do you determine fork rake to figure out what fork to buy. I noticed that most forkes are straight or they have a rake of 30 mm or something like that. Where does the measurement come from?

I don't do much racing (I might try a short CAT 5 race this summer), but I do take 30 mile rides quite often and occassionally do a 100 k or 100 mile ride. Would a carbon seat post help any? I am a 200+ pound guy and worry about the strength of the carbon posts. I appreciate any help.

re: Fork upgrade questions...(m)Quack
May 29, 2002 11:58 AM
A good carbon fork will most likely not transmit as much through the front end than steel does. As far as rake goes, I would recommend going with the same fork geometry as the stock fork to avoid changing the handling characteristics of your bike. Also, going from a raked fork to a non-raked can sometimes cause clearance issues between the downtube and the front wheel. If you draw an invisible line through the center of your headtube and extend it down to the ground, and draw a second line through the centers of your fork dropouts. The distance between these two lines is considered the rake. A 30mm rake would mean that the fork dropouts are forward of the headtube plane by 30mm. Think of a chopper motorcycle and you will understand rake.

As for the carbon post, I wouldn't worry about the strength as much as I would worry about the post making a noticeable difference in comfort. But if you've got the money, it should not transmit the tingly bumps to your hinder as efficiently as your current post does.

Hope this helps!
re: Fork upgrade questions...(m)mackgoo
May 30, 2002 1:53 AM
Want to smooth out your ride? What size tires are you running? What is the pressure?
re: Fork upgrade questions...(m)Joshua
May 30, 2002 6:05 PM
Can't go wrong with the carbon fiber fork. I picked up last years profile brc from it has a cromoly steerer tube so i dont think i gained a significant weight advantage but I do notice a huge difference in the ride quality. I cant complain for 65.00. BTW it is an aluminum bike and it had an alloy fork.