Bicycle Mechanics - cut the fork or spacers?

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Barnabas
02-20-12, 08:14 PM
I have a threaded rock shox fork, i have about 2 inches of extra space once i install it.

I have/am using the old quill i had in my old fork (yes it fits) in this new fork. I have seen spacers used for a stem, but would it be weird if i used it for a quill?

thanks!

yes i ask a lot of questions, but you know better than i do so i ask...

Puget Pounder
02-20-12, 08:19 PM
I have a threaded rock shox fork, i have about 2 inches of extra space once i install it.

I have/am using the old quill i had in my old fork (yes it fits) in this new fork. I have seen spacers used for a stem, but would it be weird if i used it for a quill?

thanks!

yes i ask a lot of questions, but you know better than i do so i ask...

I would do spaces. Cheaper, easier, and gives you more adjustability.
HillRider
02-20-12, 08:27 PM
Assuming the threads are long enough to let the top race to go down far enough, put the spacers above the top race and under the locknut.

Barnabas
02-20-12, 08:28 PM
cool thanks puget! your name makes me miss the PNW
FBinNY
02-20-12, 08:34 PM
Mounting the stem in such a way that it doesn't extend well (at least 1-5") below the headset is very risky. Your steerer tube is threaded, and I'm surprised that there's enough thread to have an extra 2', but assuming there is, your dealing with a tube with 24 stress risers per inch. Your best bet is to trim most of all the excess tube off so the headset can be fitted as designed with no more than 1/2-3/4" max. spacers under the lock nut, and the stem inserted so it ends 2" below the lower cup (and also below the last thread).

If there's so much thread that there's still enough thread under the headset that the stem ends in the threads, it's still not good. The steerer will fail at the thread aligned with the base of the stem, but the deeper this is, the longer it'll take.
Barnabas
02-22-12, 04:14 PM
If there's so much thread that there's still enough thread under the headset that the stem ends in the threads, it's still not good. The steerer will fail at the thread aligned with the base of the stem, but the deeper this is, the longer it'll take.

i don't understand exactly how it would fail and the deeper what is?