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Fork with too short steer tube, oops.

Old 02-11-06, 03:38 PM
  #1  
GerGa00
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I ordered a fork on ebay and the auction was over before the guy could tell me that the steer tube is atleast 6 inches and I found that on my bike with a 6 inch steer tube the steer tube would be only half way up into the clamp, is this ok? I tested it by tightening the clamp up high so that the tube was only half way up into it and tried twisting it and then I tried it on normal and it seems there wasnt any difference. So is it ok to use a 6inch steer tube as long as I really crank down the screws?


Thanks, Greg

Edith yea and what do I need to remove the head set cups both on the frame and the old fork to put on my new one.
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Old 02-11-06, 03:43 PM
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Originally Posted by GerGa00
I ordered a fork on ebay and the auction was over before the guy could tell me that the steer tube is atleast 6 inches and I found that on my bike with a 6 inch steer tube the steer tube would be only half way up into the clamp, is this ok? I tested it by tightening the clamp up high so that the tube was only half way up into it and tried twisting it and then I tried it on normal and it seems there wasnt any difference. So is it ok to use a 6inch steer tube as long as I really crank down the screws?


Thanks, Greg


greg,

i will speak on behalf of the forum. we don't think this is a good idea. here is what you do...re-sell on Ebay and start another bid going. you'll recover your funds.

good luck!
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Old 02-11-06, 03:48 PM
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oooo uhh really? I mean it seemed fine when I tested it out.. I mean I dont do anyhard riding at all and I hardly ever get to actually "ride" as in trails and I never do jumps.
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Old 02-11-06, 03:51 PM
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Originally Posted by GerGa00
Edith yea and what do I need to remove the head set cups both on the frame and the old fork to put on my new one.
removal is the easier part...properly installing new cups is the problem. you can remove the old hS cups using a long drift alignment tool (i.e. big "punch") approaching from opposite directions. bottom cup from top entry with tool and catch the edge of cup and gently tap incrementally around. vice versa for other cup.

race on fork steerer can often be put on with a piece of pvc pipe. as far as the cups...i would buy the right tools, so i will leave it up to someone else here to give advice.
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Old 02-11-06, 03:51 PM
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You could potentially gain some space by finding a 0 stack headset. If its only off by a bit, then it sounds like that couild solve your problems.

As for safety, I wouldn't let my worst enemy ride that setup.
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Old 02-11-06, 03:53 PM
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Originally Posted by GerGa00
oooo uhh really? I mean it seemed fine when I tested it out.. I mean I dont do anyhard riding at all and I hardly ever get to actually "ride" as in trails and I never do jumps.
I could totally see it working itself off over time. Maybe come off when you're going up or down a curb...and that would be bad.
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Old 02-11-06, 03:59 PM
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Im still not exactly sure about this, it seemed fine and what you are saying well, you guys actually are mountain bikers.
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Old 02-11-06, 04:00 PM
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Originally Posted by Karldar
I could totally see it working itself off over time. Maybe come off when you're going up or down a curb...and that would be bad.
well the top cap thing will still go on though.
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Old 02-11-06, 04:00 PM
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Originally Posted by GerGa00
oooo uhh really? I mean it seemed fine when I tested it out.. I mean I dont do anyhard riding at all and I hardly ever get to actually "ride" as in trails and I never do jumps.
well....oh, alright greg. but i wouldn't crank the bolt to compensate. maybe thread locker and you can also buy retaining compound. (see below) this would be my first choice, the retaining compound that is. furthermore, i wouldn't tighten the upper clamp bolt much at all...you might tweak your stem funny.

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Old 02-11-06, 04:04 PM
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it would be nice if you got one of these to put on:

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Old 02-11-06, 04:10 PM
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Originally Posted by mx_599
it would be nice if you got one of these to put on:

Even then it still doesn't do what it is supposed to. The starfangled nut is only meant to compress the bearings. The stem (both bolts) are what actually holds the front end together. For all intensive purposes you could bolt the stem on and then take the fangled nut out.

I still wouldn't do it or recommend it to anyone. During a casual ride I have had my handlebar twist (tire getting caught in a rut) I couldn't imagine how weak the interface would be in the above scenario.
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Old 02-11-06, 04:15 PM
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welllll... now you guys got me thinking about this I dont want to kill myself or anything. the fork will ship monday so maybe the guy wont ship Ill see what I can do.
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Old 02-11-06, 04:17 PM
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Originally Posted by mx_599
it would be nice if you got one of these to put on:



What is that thing and how does it work?
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Old 02-11-06, 04:23 PM
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Originally Posted by Maelstrom
Even then it still doesn't do what it is supposed to. The starfangled nut is only meant to compress the bearings. The stem (both bolts) are what actually holds the front end together. For all intensive purposes you could bolt the stem on and then take the fangled nut out.
yes i know...but it is still MORE secure than a star-fangled nut. like i originally said, if the seller is going to be a ****** and make him buy it, he should just re-sell on ebay and get the proper length
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Old 02-11-06, 04:25 PM
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Originally Posted by bellweatherman
What is that thing and how does it work?
in lieu of the star-spangled banner nut thing, you can use one of these. like Maelstrom said, the stem is still doing the "work".

however, i still like these

you pop out the star nut and put this through the whole steerer stem

in the unfortunate event of a compromised front end, i'd rather have the above as a back up than these:



although, these are in there pretty freakin' tight too

Last edited by mx_599; 02-11-06 at 04:32 PM.
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Old 02-11-06, 05:28 PM
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get a bmx stem or something like this http://www.blueskycycling.com/produc...B1-DH-Stem.htm which has a lower stack height. and a zero stack headset will help too
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Old 02-11-06, 05:38 PM
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Originally Posted by dccool879
get a bmx stem or something like this http://www.blueskycycling.com/produc...B1-DH-Stem.htm which has a lower stack height. and a zero stack headset will help too
How tall is the clamp part that goes on the steerer tube on that? The info there is a little unclear to me. And where can I find a zero stack headset?

Thanks, Greg

Edit:and where could I find a stem that is shorter and/or 4 bolt

Last edited by GerGa00; 02-11-06 at 05:47 PM.
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Old 02-11-06, 06:14 PM
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best bet would be to get a different fork. I'd tell the seller you bought it from about the problem and see if you can get out of the deal. I buy and sell on Ebay quite a bit ,and most sellers are honest people that want their buyers to be happy with their purchase.
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Old 02-11-06, 07:19 PM
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http://wheelworld.com/site/itemdetai...311&Catalog=39 I found this stem is it good for me? The stack height is 45mm and the amount that the steertube will be sticking out is approx. 23mm and look at where the top bolt is it is maybe 25-30mm high and besides that look at how beefy it is. There is also this one with a stack height of 46mm and there are the two bottom ones-the small bottom one and the middle one which would be right where the steer tube stops. So which one of those do you think would be better or would it still be necessary to get a stem with 4 bolts?


THanks, Greg

Edit: actually no the fsa has three bolts one middle on one side and two on the other.

Last edited by GerGa00; 02-11-06 at 08:46 PM.
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Old 02-11-06, 09:54 PM
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Yeah, that's kind of scary. The big issue isn't whether the stem will possibly turn. Keep in mind that stems are usually cutaway on the inside(most xc stams anyway) where it meets the actual extension part. Mostly for weight savins I guess. Anyway, with the steerer only balf way in the stem, it would be right in the middle of that big hollow cutout. I could see that being able to rock back and forth and even further risking the stem clamp loosening or just coming off from repeated up and down force on the bars.

Plus, any downward force on the bars is going to be drastically increased at the stem clamp and steerer. It's just a a big lever. YOu may land a jump one day hard on the bars and have the stem snap or fold in the steerer at the back enough to slip off. Both of which would faceplant you into your steerer, wheel, and ground.

Don't do it.
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Old 02-11-06, 10:38 PM
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Another vote for don't do it! Your personal safety isn't worth trying to force something to work. Just consider it a lesson learned. The first thing I always look at with used forks, if it is a fork of interest, is the steer tube length. And I imagine that will be the same for you now too!

Resell, or try and get out of the purchase you just made, and then figure out your minimum steer tube length, add 10mm or 1/2" at least, then don't buy anything below that.
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Old 02-12-06, 07:54 AM
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Yea Im trying to get out of it, but Ive already payed for it but still Ill see what I can do. The guy said it is at least 6inches which is half way up the stack so Ill have him actually measure it first(which I have no idea why he didnt in the first place).

Thanks, Greg

Last edited by GerGa00; 02-12-06 at 08:01 AM.
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Old 02-12-06, 08:58 AM
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pretty bad Ebay practice if you are trying to get out of it after he already sold it to you. Obviously, it was you're fault since he measured it for you before you bought it. Basically, he could've sold it to someone else, but not only did you F that up for the poor guy, but now he's got to get it back, go through the rigamorole of relisting it, pay ebay another set of relisting charges. more shipping, etc. tsk. tsk.
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Old 02-12-06, 09:04 AM
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Originally Posted by bellweatherman
pretty bad Ebay practice if you are trying to get out of it after he already sold it to you. Obviously, it was you're fault since he measured it for you before you bought it. Basically, he could've sold it to someone else, but not only did you F that up for the poor guy, but now he's got to get it back, go through the rigamorole of relisting it, pay ebay another set of relisting charges. more shipping, etc. tsk. tsk.
No one else bidded on it and he measured it after, better yet he didnt even measure it he just said "its at least 6 inches".
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Old 02-12-06, 10:20 AM
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http://www.chrisking.com/headsets/hds_perdido.html

Thats a 0 stack. You save about an inch in height. Average stack height is like 34mm this is 7ish I believe. Almost a full inch of height recovered.
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