Machining needed.

Oct 08, 2004 3 Replies

I need a couple of bits made and wondered if anyone here was able to help. I don't expect a freebie and am happy to pay in drinking vouchers ;o))



Firstly, I need a tapered hole bored in one end of about a foot of (say) 1" square bar. It is to fit the starting handle shaft on the ABC Vee 4 and I can make up a starting handle from there. It is a permanent fitting, so there is no ratchet to cut or anything.



The other will require a bit of milling, but nothing desperate. The magneto drive on the ABC has a strange rubber bush into which fits a four flanged driven dog. Imagine a cylindrical bit of bar into the face of which are drilled four vertical holes, their bores just touching. The outer part will then drop away, leaving a four pointed "star". It will also need a tapered bore to fit the magneto shaft - I'll need two of them.



Mild steel should be fine.



Regards,



J. Kim Siddorn,


"Kim Siddorn" wrote (snip):-

From memory this sounds similar to the mag coupling on a Calibrator equipped Petter M - Roland?

Can you give a bit more information on the taper. Diameter, length and angle of taper to start. Tapers are particularly difficult to get right. Even a slight error on the angle and they just don't seat. I tried making a morse taper adaptor once. The coupling sounds like a standard type. Have you tried your local power transmission shop? BSL etc may recognise it and supply one ready made. Good luck

John

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Can you give a bit more information on the taper. Diameter, length and angle of taper to start. Tapers are particularly difficult to get right. Even a slight error on the angle and they just don't seat. I tried making a morse taper adaptor once. The coupling sounds like a standard type. Have you tried your local power transmission shop? BSL etc may recognise it and supply one ready made. Good luck

John

##-----------------------------------------------## Article posted from Internal Fire Newsreader

formatting link
Share your knowledge in... uk.rec.engines.stationary ##-----------------------------------------------##

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