Author Topic: Pile of Flywheels  (Read 191 times)

Offline SimonHolyfield

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Pile of Flywheels
« on: 04.12. 2018 16:53 »
Folks,

Here's a hard question. Faced with a stack of flywheels, how do I find one which is for a 1958 large journal A10? Are there distinguishing marks or casting numbers? Will an A65 flywheel fit an A10 crankshaft?

Thanks for your help!
cheers

Simes

'51 Square Four, Masquerading D3 Bantam, '58 Huntmaster, '52 Hercules Cyclemaster, https://ariel-square-four.blogspot.com

Online Servodyne

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Re: Pile of Flywheels
« Reply #1 on: 04.12. 2018 20:55 »
In answer to your last question; No.
I looked at fitting a late A65 flywheel to an A10 crank and gave up in the end. Whilst the ID is the same, it's the cutaway for the big ends that'll prevent you from fitting it. The A65 flywheel is also smaller in OD at 175mm so you should be able to identify those at least.
1957 BSA A10 Spitfire
1971 BSA A65 Firebird
1971 BSA A70 Lightning

Offline SimonHolyfield

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Re: Pile of Flywheels
« Reply #2 on: 04.12. 2018 22:00 »
Excellent, thanks. I've got a new crank in standard size with good splines - but no flywheel...
cheers

Simes

'51 Square Four, Masquerading D3 Bantam, '58 Huntmaster, '52 Hercules Cyclemaster, https://ariel-square-four.blogspot.com

Offline BSA_54A10

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Re: Pile of Flywheels
« Reply #3 on: 05.12. 2018 08:34 »
Lucky you.
I got a lot of cranks with flywheels and cracks if you want to swap  *smile*
Bike Beesa
Trevor

Offline SimonHolyfield

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Re: Pile of Flywheels
« Reply #4 on: 05.12. 2018 11:53 »
Love to. Postage from the UK might be a challenge though!
cheers

Simes

'51 Square Four, Masquerading D3 Bantam, '58 Huntmaster, '52 Hercules Cyclemaster, https://ariel-square-four.blogspot.com