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Varitronic flywheel thread differences
Posted: Sat Nov 09, 2019 9:36 am
by Hughieboy
Bit of a strange one, I have a Buzzetti flywheel puller and it fits an Li Varitronic flywheel I have perfectly. Just bought a GP Varitronic flywheel to go with a new crank and the same flywheel puller doesn’t fit! I’ve tried ‘persuading’ it in a little but I don’t want to bugger it up.
Anyone else had this/know what the answer is?
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Re: Varitronic flywheel thread differences
Posted: Tue Nov 12, 2019 9:13 pm
by Grumpy225
Sounds like a rolled thread on the new flywheel. If you have a thread file you might be able to carefully clean up the internal thread on the flywheel. At least look them over carefully under a magnifier to spot the problem.
Re: Varitronic flywheel thread differences
Posted: Tue Nov 19, 2019 8:53 pm
by Hughieboy
Grumpy225 wrote: ↑Tue Nov 12, 2019 9:13 pm
Sounds like a rolled thread on the new flywheel. If you have a thread file you might be able to carefully clean up the internal thread on the flywheel. At least look them over carefully under a magnifier to spot the problem.
Sorry for the late reply, only just seen this.... oddly, although it took a bit of getting going, the new flywheel puller fit! Maybe my old one wasn’t all that good....
Re: Varitronic flywheel thread differences
Posted: Mon Dec 09, 2019 3:37 am
by Spj
I have had the same issues you have. I think it is a 27/1.0 pitch.