Fork yokes - on-the-wonk!

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Fork yokes - on-the-wonk!

Postby uktom77 » Tue Dec 15, 2020 8:13 pm

So before I place (yet another) wanted ad’ I thought I’d check that these lower fork yokes can’t be saved. Had them stored for ages, thought these would be the easiest bit of the build, but go to pull the stanchions up through them tonight to find one side is out of line. Using a straight edge across the bottom confirms the issue. One side is bent down a little. Is it worth (with my rudimentary skills and equipment) attempting to heat (map gas only) and straighten? I fear I know the answer......

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Re: Fork yokes - on-the-wonk!

Postby dave16mct » Tue Dec 15, 2020 8:28 pm

I wouldn't use heat. Tighten up the pinch screw and holding the stanchion at the very bottom, give it a good wrench sideways. You've nothing to loose by trying. You'll have to get a helper to hold the bike (I've always done this off the bike with it fixed in the vice). I've used an old stanchion with a big tube to extend the leverage.
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Re: Fork yokes - on-the-wonk!

Postby uktom77 » Tue Dec 15, 2020 8:35 pm

That's good to know (that all is not lost) Sadly I don't have an old stanchion so next query ..... do I not run the risk of bending the stanchion?


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Re: Fork yokes - on-the-wonk!

Postby 56G80S » Tue Dec 15, 2020 8:59 pm

I'm going to sound daft but I guess you were using a proper puller?

With everything a bit loose I reckon a length of studding, cut down top nut, spacer (old socket) and some nuts would pull stanchions straight through and what's more make things straight at that bottom yoke.

But then, I'm a bodger.

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Re: Fork yokes - on-the-wonk!

Postby uktom77 » Tue Dec 15, 2020 9:13 pm

Johnny B - yep, exactly that. Home made puller from threaded bar and old top nut.

I could tell it was wonky as I pulled it through and it wouldn't pull up into the top yoke properly (but I kept on going hoping it was just my eyes )

Think it might have to come off and go in the vice.


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Re: Fork yokes - on-the-wonk!

Postby uktom77 » Fri Dec 18, 2020 8:32 pm

Well, I was quite surprised that worked surprisingly well!

Dave16mct - yoke out and into vice, old bicycle frame cut up for tubing (I knew there’s a reason I kept that) and then a look of surprise that it worked. Thank you!

All back in the bike now.


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Re: Fork yokes - on-the-wonk!

Postby cbranni » Fri Dec 18, 2020 9:05 pm

Good news Tom
only dead fish go with the flow

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Re: Fork yokes - on-the-wonk!

Postby dave16mct » Fri Dec 18, 2020 11:07 pm

Glad it worked. :D
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Re: Fork yokes - on-the-wonk!

Postby 56G80S » Sat Dec 19, 2020 5:05 pm

Great stuff.

NIce to hear that the simple solution worked.

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Re: Fork yokes - on-the-wonk!

Postby DavidHulse » Wed Jan 13, 2021 8:39 pm

Hi all. I've got a similar, but slightly different problem, and I'm hoping someone can come up with some ideas.

I've assembled the forks, and the stanchions have gone fully into the top yoke. But the gap between the yoke and fork crown on the left leg is about 3mm too long for combined length of the collars and headlamp bracket, resulting in the three components rattling about loosely. I fitted new rubbers under the bottom collars before I assembled them and the right leg is OK. I know I could fit packers under the loose collar(s) but I don't want to do that if there is a better fix, as the left leg would not match the right.

I haven't got a fork puller, so I did the assembly using the alternative method detailed in the manual; i.e. pulling the stanchions through the fork crown to six and a half inches before clamping them, and using a ratchet strap to compress the springs as mentioned elsewhere on this site. Major downside of this method was trying to get the top yoke on and lined up with the stem and two stanchions, while retaining the ball bearings in both races; an absolute nightmare and I've done it three times now and it's still not right. I'd rather not take it off again but I'm wondering if that's going to be the answer, as described in the earlier posts above. Any suggestions for an alternative solution would be greatly appreciated. Thanks.

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