58 VH 500 popping out of second gear above 2500-3000 rpm

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dgurovich
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Re: 58 VH 500 popping out of second gear above 2500-3000 rpm

Post by dgurovich »

Well that's not it then! I think shimming the secondary shaft top hat bushing on the case cover side, or the other side?
Danilo Gurovich
Marine City, MI USA
1957 Ariel 500cc
1961 Matchless G12 CSR
1966 Matchless G80s
1968 Moto Guzzi V700
2006 Royal Enfield Bullet
2019 Royal Enfield Interceptor
a Couple of modern Vespas
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simon.holyfield
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Re: 58 VH 500 popping out of second gear above 2500-3000 rpm

Post by simon.holyfield »

dgurovich wrote: Wed Sep 16, 2026 12:47 pm Well that's not it then! I think shimming the secondary shaft top hat bushing on the case cover side, or the other side?
Might I suggest you measure the endfloat for the mainshaft, layshaft and sleeve gear? There's a lot of expertise in the club (not me!) that has helped me hugely with problems like this...
cheers

Simes
Machine Registrar (registrar@arielownersmcc.com)

'51 Square Four,
'58 Huntmaster,
'42 W/NG,
'30 Model A
https://ariel-square-four.blogspot.com
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dgurovich
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Joined: Tue Jun 28, 2022 4:07 pm
Location: Marine City, MI USA
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Re: 58 VH 500 popping out of second gear above 2500-3000 rpm

Post by dgurovich »

Is there instructions for accurately measuring end float? I'm new to transmissions and I'm comfortable with assembly/dissasembly, but the finer points are still kind of new to me.
Danilo Gurovich
Marine City, MI USA
1957 Ariel 500cc
1961 Matchless G12 CSR
1966 Matchless G80s
1968 Moto Guzzi V700
2006 Royal Enfield Bullet
2019 Royal Enfield Interceptor
a Couple of modern Vespas
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simon.holyfield
Holder of a Platinum Anorak
Holder of a Platinum Anorak
Posts: 5248
Joined: Mon Oct 17, 2011 11:16 pm
Location: Norfolk
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Re: 58 VH 500 popping out of second gear above 2500-3000 rpm

Post by simon.holyfield »

This should help. The guage is called a Dial Test Indicator here in the UK - there is a plunger which moves in and out and makes the needle go around on the gauge to show you how much the plunger has moved. In this picture I have the plunger in contact with the end of the sleeve gear.

DTIs are used with a magnetic stand, which is sitting on one of the engine plates.

You push the shaft in one direction, set the gauge to zero, and use some sort of lever to push the shaft in the other direction and measure how much it moves.

IMG_20240202_174319.jpg
cheers

Simes
Machine Registrar (registrar@arielownersmcc.com)

'51 Square Four,
'58 Huntmaster,
'42 W/NG,
'30 Model A
https://ariel-square-four.blogspot.com
User avatar
dgurovich
Posts: 18
Joined: Tue Jun 28, 2022 4:07 pm
Location: Marine City, MI USA
Contact:

Re: 58 VH 500 popping out of second gear above 2500-3000 rpm

Post by dgurovich »

I have that tool. I'll dig in!
Danilo Gurovich
Marine City, MI USA
1957 Ariel 500cc
1961 Matchless G12 CSR
1966 Matchless G80s
1968 Moto Guzzi V700
2006 Royal Enfield Bullet
2019 Royal Enfield Interceptor
a Couple of modern Vespas
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