Half time pinion nut

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ralfpenkert
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Half time pinion nut

Post by ralfpenkert »

Hello again,
sorry for a probably silly question, its the first time i had to strip a VH 500 completely.
Is there another way to tighten that half time pinion nut but to block the sprocket behind the shock absorber against the clutch sprocket?
Primary case is already closed - unfortunately.
Would appreciate any advise - Ralf
JohnnyBeckett
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Re: Half time pinion nut

Post by JohnnyBeckett »

hi i nip the nut with a impact ( rattle gun ) and lock the rear wheel up and put it in first gear and torque the nut up
ralfpenkert
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Re: Half time pinion nut

Post by ralfpenkert »

Johnny, i did something similar.
Told my son to sit on, put in the first gear and step on the rear break.
Could tighten it till the clutch slipped.
But the gap between the pinion and crank house is still a bit bigger than before.
If this will be good enough?
Thought about heating up the nut and do the same procedure.
Don't have a rattle gun.
Ralf
BTW its a VH500, 1956
JohnnyBeckett
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Re: Half time pinion nut

Post by JohnnyBeckett »

hi i would not heat the nut , and it sounds like the pinion is not going right on the crank to have a bigger gap than before
Simon.Gardiner
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Re: Half time pinion nut

Post by Simon.Gardiner »

Ralf:
The gap between the pinion and the crankcase doesn't matter as long as the pinion is pushed right up against the 'step' in the mainshaft.
(You've had the crankshaft rebuilt and some of its overall dimensions might have changed!)

SG
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'55 Huntmaster, '56 VH, ' 51 VH, '62 Arrow, '80 R100RT, '00 Sprint ST (now with a new Arrow project, and just now those 4-stroke Ariel parts can't even make one running bike...)
nevhunter
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Re: Half time pinion nut

Post by nevhunter »

Put it in TOP gear and then you are not loading the gears or rear chain as much. Top gear is a direct drive. Nev
ralfpenkert
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Re: Half time pinion nut

Post by ralfpenkert »

Thanks a lot for all advises.
And sorry for this litle confusion . I thought about heating up the pinion of course.
However, during reassembling first time after rebuilding big end i forgot to consider the timing marks. Thats the reason for all hazzle.
Me stupid.
So will leave the primary case closed, use top gear and try sto tighten it a half a
thread or more.
Meanwhile i think the shock absorber turned
up rather than the clutch slipped.
Ralf
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Re: Half time pinion nut

Post by volker.halbach »

In 4th gear I just stand on the rear break with the left foot and then tighten the nut with the right hand. A long ratchet is helpful. No excessive force should be required.
nevhunter
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Re: Half time pinion nut

Post by nevhunter »

I've stopped trusting those timing marks and use a timing disc always to be sure the timing is correct.Set the valve clearance equally and "Off the ramps". when timing it. Nev
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Re: Half time pinion nut

Post by nevhunter »

ralf, the shock absorber should not turn. Compress the spring more so it can't. Nev
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