B40 triple clamp material

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B40 triple clamp material

Post by Momus » Mon Jun 01, 2020 8:40 am

B40 Star- 1964 model I think.

Did these come from the factory with steel, iron or aluminium lower triple clamps?

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Re: B40 triple clamp material

Post by JB » Mon Jun 01, 2020 9:06 am

Almost certain it would be a steel forging.

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Re: B40 triple clamp material

Post by minetymenace » Mon Jun 01, 2020 9:43 am

What JB said.
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Re: B40 triple clamp material

Post by Momus » Mon Jun 01, 2020 12:20 pm

Thanks gents.
Mine has an aluminium unit with a steel stem and forks that look similar to the B50.was there an ally clamp fitted to any BSA models prior to B50 say Victor?
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Re: B40 triple clamp material

Post by minetymenace » Mon Jun 01, 2020 12:35 pm

All '71 and later OIF bikes had Aluminium fork yokes.
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Re: B40 triple clamp material

Post by kommando » Mon Jun 01, 2020 3:47 pm

was there an ally clamp fitted to any BSA models prior to B50 say Victor?
No

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Re: B40 triple clamp material

Post by Momus » Mon Jun 01, 2020 7:31 pm

Thanks.
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Re: B40 triple clamp material

Post by midgie » Mon Jun 01, 2020 8:58 pm

minetymenace wrote:
Mon Jun 01, 2020 12:35 pm
All '71 and later OIF bikes had Aluminium fork yokes.
Apart from the 71 oif twins of course.

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Re: B40 triple clamp material

Post by minetymenace » Tue Jun 02, 2020 8:58 am

I know that midgie, but this is the Unit Singles forum.... :oops: :cool: :mrgreen: :thumb
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Re: B40 triple clamp material

Post by midgie » Tue Jun 02, 2020 9:05 am

minetymenace wrote:
Tue Jun 02, 2020 8:58 am
I know that midgie, but this is the Unit Singles forum.... :oops: :cool: :mrgreen: :thumb
I just figured you need all the help you can get :laugh

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Re: B40 triple clamp material

Post by minetymenace » Tue Jun 02, 2020 9:32 am

My triple has aluminium yokes.... :roll: <910
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Re: B40 triple clamp material

Post by SteveS » Tue Jun 02, 2020 11:21 am

Are they the ones with the built in cracks? <216
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Re: B40 triple clamp material

Post by minetymenace » Tue Jun 02, 2020 12:45 pm

No cracks in mine! Think this is either rumour caused by cheap replicas or historic front end damage, a bit like the headlamp wires cracking on OIF singles (he says trying very hard to get this thing back on topic, but then realising that the title of the topic includes "triple clamps"!!)...
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Re: B40 triple clamp material

Post by BSA_WM20 » Wed Jun 03, 2020 9:52 am

Well to keep it on / off topic.
THe A65L did around 150,000 miles without any problems from the wire mounted headlight.
The B 50 T used to eat a set every year or so .
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