Author Topic: Tapers in fittings  (Read 313 times)

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Jackson

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Tapers in fittings
« on: 09 May, 2018, 17:04:44 »
I am fitting a Steib S500 to my Ď53 plunger A10.
I have many fittings and a lathe to help with those I havenít.
I need to make the fittings which go into the lugs on the bike frame.
There are three of these, one under the head stock (tapered), one under the nose of the saddle (tapered, but a different size) and one just in front of the middle of the plunger (cylindrical and is also the pillion footrest mounting when solo). Does anyone have any idea of the internal dimensions of these lugs, particularly the tapers? I am finding it difficult to measure the tapers and the internal surface is uneven (paint I think, will need cleaning).
Any help gratefully received.

ROYC

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Re: Tapers in fittings
« Reply #1 on: 09 May, 2018, 21:38:57 »
I am finding it difficult to measure the tapers and the internal surface is uneven (paint I think, will need cleaning).
Any help gratefully received.

Shove some Modelling Clay, Plastercine into the hole, this will give you a model of the thing that you want to make in metal.
My bike is a 1958 A7SS

Jackson

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Re: Tapers in fittings
« Reply #2 on: 10 May, 2018, 08:03:29 »
Ta, Iíd thought of that but worried itís too soft and distorts on the way out. Iíll try it though. I wondered if anyone had any original BSA specs for the lugs.

DEAN SOUTHALL

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Re: Tapers in fittings
« Reply #3 on: 14 May, 2018, 18:31:57 »
There is an article in this month's Star about sidecar fitting. The author has offered to help anyone having problems. It might be worth getting in touch with him directly.

Jackson

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Re: Tapers in fittings
« Reply #4 on: 19 May, 2018, 11:39:36 »
Thanks, Iím in touch with him already, heís the BSAOC sidecar specialist.
Adrian