's Forum Archives - Components

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

Carbon Fork Blade Length Statistics?? Where Are They??(9 posts)

Carbon Fork Blade Length Statistics?? Where Are They??rohickman
Nov 9, 2002 6:35 PM
Hey there! I am wanting to get a carbon fork for my compact 47 cm Cannondale with 700c wheels where toe-wheel overlap is of concern and I want to retain my original wheelbase and overall bike geometry. But I've been discovering that the newer carbon forks are generally shorter than mine even if they have the same rake. Where can you get blade length statistics? As far as I can tell only Reynolds lists blade length. For instance, the Ouzo Pro is listed at 285mm. My old fork is 370!! That's quite a difference!! Is this a type-o or are we measuring differently? At right angles from the top of the crown to the center of the axel?? Can you help please? Thanks!
I think your misunderstanding things.JS
Nov 9, 2002 6:58 PM
The 285mm your refering to on the Reynolds site probably indicates the steerer tube length. As far as blade length, also known as axle to crown length, that is fairly standard, 370mm is about what most 700c road forks are ( this is a function of wheel diameter ) give or take a few milimeters. To answer your question, any modern fork will work fine, just keep the offset the same if you want your bike to handle as it does now.
Nov 9, 2002 7:06 PM
Most carbon forks come in the 367 - 370 mm range. Often, steel forks are slightly shorter though - in the low to mid 360's depending on the type of crown used.

re: Carbon Fork Blade Length Statistics?? Where Are They??Wackycyd28
Nov 10, 2002 7:50 AM
With regards to fork blade lengths, to be honest it's not something you really need to be thinking about, as long as the forks are designed for 700c wheels, there shouldn't a problem.
You're other replies to your question are correct, the length listed will be for the steerer column.
The main thing that you should bear in mind is the off-set of the forks, noting that you ride a fairly small frame, 47cm, I would recommend that you look at forks with an off-set of 45 or 43 deg, rather than a pair of 40 deg forks, which are better suited to larger framesets.

Hope this is of help.
My Heros! Thanks!rohickman
Nov 10, 2002 9:04 AM
re: Carbon Fork Blade Length Statistics?? Where Are They??Lactate Junkie
Nov 10, 2002 12:54 PM
FYI Fork offset/rake is measured in millimeters, not degrees
re: Lactate Junkie is quite right, mm not deg, my apologiesWackycyd28
Nov 11, 2002 3:21 AM
My profuse apologies, Lactate Junkie is correct in saying that the fork off-set is in mm not deg.
A small error on my behalf, probably down to the fact that I had a 4 hour track session early that day and was somewhat 'shelled out', although I'm sure the basic info required was all in there, correct?

what's the largest size tire a 700C road fork will accomodate? nscorpionking
Nov 10, 2002 6:13 PM
It depends........gogene
Nov 11, 2002 8:04 AM
...on how the fork is constructed (clearance between the legs), and what kind of brakeset is installed. Most all forks/brakes will accomodate
a 700x25, and quite a few will hold a 700x28, that you may have have to squeeze past the calipers.

Tire size, as printed on the side of the tire may not be correct. The actual width of the tire is sometimes more than the stated size.