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Look Carbon fiber Steerer Fork(8 posts)

Look Carbon fiber Steerer ForkTxTarpon
Dec 10, 2001 6:56 AM
I ordered one of these from Nashbar and should receive it this week. Are there any special considerations I need to be aware of when fitting it into my aluminum cane creek headset? Thanks.
re: Look Carbon fiber Steerer ForkRusty Coggs
Dec 10, 2001 5:50 PM
Measure severall times..Think about it alot.Cut once.If in doubt, too long is better than too short.
re: Look Carbon fiber Steerer Forkfeathers mcgraw
Dec 10, 2001 10:09 PM
Fine toothed hacksaws work fine. Use the expansion plug included with the fork. Use a spacer above the stem, cut the steerer tube so that it protrudes over the stem slightly. Don't grease it. Some looks require washers on the brake bolt to tighten it down. Or you could cut the bolt down a bit.
re: Look Carbon fiber Steerer Forksticky
Dec 11, 2001 5:46 AM
A lot of people say you shouldn't cut the steerer tube 2-3mm below the stem level - why not? Look at all the pro's bikes and the bikes from your LBS - non have spacers above the stem.
Also, I didn't think you could put an extra spacer on the top of a Look fork (or so I have been told). Not quite sure why you couldn't - does anyone have an explanation?

I am going to cut my Look HSC3 fork this week and planned on cutting it to the correct length (2-3mm below stem). Unless anyone can give me a damn good reason not to!
spacer explanation....C-40
Dec 12, 2001 10:07 AM
This suggestion actually comes from european pro mechanics. It was reported in Cycle Sport magazine.

Using a 2-3mm spacer on top of the stem will allow the expanding plug to be positioned a little closer to the top of the steering tube and provide a little extra protection against pinching that could cause a crack. It's certainly not a necessity though. The best protection against cracking is proper tightening of the stem and proper positioning of the expanding plug.

There is no reason you can't put a spacer on top of the stem with a LOOK fork.

The only other reason to place a (longer) spacer on top is to provide some adjustment. Some folks like the bars up a little higher in the early season.
re: Look Carbon fiber Steerer ForkPrincipiaguy
Dec 13, 2001 1:53 PM
Hello, I´ve been a mechanic for a danish pro team for two years. Here´s some facts.
You shouldn´t cut any carbonsteerer below stem height.
Modern lightweight stems are almost hollow with a big hole on the contact surface for the fork,.So the stem needs to be supported at it´s entire length, especially at the top. That´s because a carbonsteerer isn´t as stiff as an aluminium or steel do. So the stem needs to be supported at it´s entire length.
Cut the steerer 1-2 mm´s above the top of the stem, and then put a nice, short carbon spacer on top. That looks cool, and makes the whole assembly stiffer, stronger and safer.

P.S if the pros don´t do this, it´s because the majority still prefer aluminium steerers, due to the stiffness.
re: Look Carbon fiber Steerer ForkPaul
Dec 11, 2001 9:04 AM
I just finished building a kg 386 using the carbon steerer and cane creek headset. Experience no problems in pressing the headset, and cutting the steerer. Put some light grease or oil on the cups before pressing. I used a new 28 tooth per inch blade, and the carbon cut easily with no burrs. Don't use too much pressure, and then only in one directio to avoid ripping the carbon. I gather you have the correct tools, and if you need info, go to parktool.com for instructions. The rule is according to experts, is that the spacer stack height should be 1" for a 1" steerer, and 1 1/8 for a 1 1/8 steerer. Supposely, you could get some whip stacking it higher.

Paul
re: Look Carbon fiber Steerer ForkKurt VF
Dec 11, 2001 3:29 PM
MEASURE TWICE, CUT ONCE. Any questions?