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16 posts • Page 1 of 1
Im in the process of replacing the front suspension fork with a rigid fork. When I put everything together, there appears to be a gap between the centering sleeve and the spacers. Ive tensioned it down with the stem removed.
I cannot recall if this gap was there with the original suspension fork in place.
Does this appear correct?
Looks like it's not tensioned nearly enough. Loosen the stem clamp bolts & tighten the top cap until there is no play in the bearings. If the top cap is bottomed out on the top of the steerer tube already, add another spacer either underneath if you don't mind the bar coming up a few more mm, or above the stem if you're happy with the current height. The top of the steerer tube needs to be 2-3mm below the top of the stem (or spacer on top of it) in order for the top cap to properly tension it all.
I had a thought, but it got run over as it crossed my mind.
it looks like a Aheadset that came on my avanti, and the top plastic "cover" doesnt do it's primary job in covering anything. if you've got the bearings loaded enough that there is no fore/aft play in the steerer then it should be sweet.
i'd suggest a better headset (or top cap if you can find a compatible one) may be in order though, i replaced mine with a cheap Ritchey one from wiggle for ~$18, just to get a proper top cap to seal the bearings a little better.
Add another spacer. I had the same issue when replacing a stem. In your case the stem is the same but the steerer length has changed. LBS should be able to give you a free spacer.
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The steerer was longer than the suspension fork it replaced so I played around with some spacers and had a gap of 2-3mm at the top between the stem and steerer tube. Tensioned it up although the gap is still there.
Looks to be insufficient free space between top of steerer and top of stem for enough preload to me.
...whatever the road rules, self-preservation is the absolute priority for a cyclist when mixing it with motorised traffic.
London Boy 29/12/2011
Gap should have nought to do with you disturbing the setup or using a rigid fork.
You should simply be able to close the gap by hand - the spacers should sit directly, loosely and easily on the top headset bearing cage. Same goes for the stem (as long as the bolts are loose). It should be easy for you to compress this loose stack by hand to take up any slack on the steerer. If you can't do this then you are wasting your time trying to preload the headset bearings using the top cap because clearly something is amiss...
Ours is not to reason why...merely to point and giggle
as previously mentioned, it's the same Aheadset that was on my new Avanti, and looked identical whilst being tensioned correctly. they dont have a proper top cap over the compression ring, the spacers sit direct on top.
bike isn't here to take a pic of, but like this...
yep. even the offical avanti photo of my bike shows it like that. so long as it's tensioned correctly you're good to go.
What is causing that gap, is there something holding the spacers up?
There must be something that is physically holding the spacers up, there usually are some slack between the inner diameter of the spacer and the steerer tube. Therefore a spacer should just drop to the lowest point until it hits the headset.
I would suggest taking it all apart and put it back piece by piece and you should be able to identify what is causing the gap.
Btw, is the exposed silver bit the steerer tube, or part of the headset? If its part of the headset, then it might be normal.
16 posts • Page 1 of 1
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