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gear alignment
Posted: Wed Sep 17, 2014 12:53 pm
by hendy
i am building a li125 s3 gearbox.
there is approx 0.5mm misalignment between the gear cluster and loose gears
the only way i can see to correct this is to change the cluster shim to one which is 0.5mm thicker (standard is 1.0mm), but i don't believe there is anything other than a standard shim. also, this may move it too close (possibly to the point of binding) to the gearbox plate.
i can't move the layshaft toward the rear wheel in any way that is obvious to me
what do i do?
does it matter? surely gear selection would be better with perfect gear alignment
Re: gear alignment
Posted: Wed Sep 17, 2014 1:04 pm
by 10 inch Terror
hendy wrote:i am building a li125 s3 gearbox.
there is approx 0.5mm misalignment between the gear cluster and loose gears
the only way i can see to correct this is to change the cluster shim to one which is 0.5mm thicker (standard is 1.0mm), but i don't believe there is anything other than a standard shim. also, this may move it too close (possibly to the point of binding) to the gearbox plate.
i can't move the layshaft toward the rear wheel in any way that is obvious to me
what do i do?
does it matter? surely gear selection would be better with perfect gear alignment
If I'm reading this right the cluster will put up slightly once your clutch is fitted and tightened up to the correct torque setting. I'm assuming you haven't fitted the clutch yet?
Re: gear alignment
Posted: Wed Sep 17, 2014 1:06 pm
by stokky
remember when adding clutch/rear sprocket it will pull the xmas tree out a bit.
It probably will the align
Re: gear alignment
Posted: Wed Sep 17, 2014 3:05 pm
by hendy
gents,
you're both right; i haven't fitted the clutch and yes it will obviously pull the cluster out.
but now i'm left wondering if it will pull it too far and how on earth i would check this.
maybe it won't pull it far enough.
maybe i should stop asking questions and just see if it works properly after assembly
Re: gear alignment
Posted: Wed Sep 17, 2014 6:43 pm
by 10 inch Terror
Just fit it and see. I'm sure it will be fine once everything is torqued up properly.
Re: gear alignment
Posted: Mon Sep 22, 2014 1:58 pm
by a.lo.v2
the way to check could be the same as the cyclone, fit the 4th cog only then endplate and clutch then use smart phone or an USB endoscope to look underneath.
Re: gear alignment
Posted: Mon Sep 22, 2014 3:25 pm
by HxPaul
"There is approx 0.5mm misalignment between the gear cluster and loose gears ........."
How do you know this ? Surely when built up the cluster and most of the loose gears are hidden behind the endplate.
Re: gear alignment
Posted: Mon Sep 22, 2014 11:34 pm
by hendy
HxPaul wrote:"There is approx 0.5mm misalignment between the gear cluster and loose gears ........."
How do you know this ? Surely when built up the cluster and most of the loose gears are hidden behind the endplate.
Engine on its side, measure displacement between teeth of cluster and loose gears. Easy peasy lemon squeezy
Re: gear alignment
Posted: Tue Sep 23, 2014 7:53 am
by HxPaul
hendy wrote:HxPaul wrote:"There is approx 0.5mm misalignment between the gear cluster and loose gears ........."
How do you know this ? Surely when built up the cluster and most of the loose gears are hidden behind the endplate.
Engine on its side, measure displacement between teeth of cluster and loose gears. Easy peasy lemon squeezy
I'm sorry,but I dont understand your answer.Is the difference measured before you fit the endplate.