Author Topic: Crank I.D.  (Read 231 times)

Offline BritTwit

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Crank I.D.
« on: 28.02. 2020 19:16 »
I've had both of these for several years.  They were both marked as A10.  Now that I'm ready to use them, there appears to be a difference in the drive side.
What's what?
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Offline muskrat

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Re: Crank I.D.
« Reply #1 on: 28.02. 2020 19:39 »
G'day BT.
The one on the left is either an A10 alternator model or an A50/65. Measure the drive side journal. I think the A50/65 is smaller.
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Offline BritTwit

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Re: Crank I.D.
« Reply #2 on: 28.02. 2020 23:05 »
Thanks Muskrat
It appears I have an A50/A65 crank (smaller bearing I.D.) .  I thought maybe the odd one was an alternator A10, but they are rare in the U.S.
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Offline Nourish

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Re: Crank I.D.
« Reply #3 on: 29.02. 2020 09:31 »
Interesting - Will a unit crank fit into the pre unit cases - by just putting a bush over the smaller diameters?
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Online JulianS

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Re: Crank I.D.
« Reply #4 on: 29.02. 2020 10:04 »
If it would I think some work would be needed.

The A65 gearside journal is a nominal 1.5 inch diameter and the A10 less at a nominal 1.375 inch diameter.

The A65 cranks early v late type have different widths, interesting article here;

https://www.classicbritishspares.com/blogs/news/early-vs-late-cranks
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Offline Klaus

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Re: Crank I.D.
« Reply #5 on: 29.02. 2020 11:51 »
A65 has 10mm shorter strocke, so its better to build up an A7 with it.

chers Klaus
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