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  #1 (permalink)  
Old 11-06-2005, 05:45 PM
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Join Date: Oct 2005
Location: Nutley, NJ
Bike Year, Make, Engine: 62, BSA, A10
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BSA A7-A10 project

Got this project from my brother. He collects parts and eventually puts pieces together and gets them running. His girlfriend got tired of not being able to use her living room closet because this was in it. He knows I've rebuilt a few Jap baskets and thought I'd like to try my hand at a Brit project. I'm in the learning stage of what makes these tick, "what do you mean there's no battery?" So I may need what seems like basic info but this is my first bike this old. (I'm 47 and have been riding for over 30 years and have owned so many bikes I can't recall them all, OK I could but I regret letting some go so I'd rather not think of them.) Thanks in advance for any advice.
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  #2 (permalink)  
Old 01-25-2006, 08:27 AM
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Bike Year, Make, Engine: 06' H-D Softail
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Looks like you got the beginnings of a beaut of a BSA preunit. I got a 58' A-10 I'm redoing (got tired of metal flake plum purple ), so apart it came.

A few things about these old beasts:

You can run a H-D Sportster (early, up to 77) frontend or 45 solo. They are the same neck stem size (7/8"), and alot easier to find parts for.

You can really simplify the electrics on them, as the mag takes care of ignition. I would hook up a kill switch though (yanking them plug wires makes your hair stand up, and stlling it out in second gear isn't healthy for the bike). I am going to run a dead 6 volt battery. It doesn't really need it, but I think of it like a backup for that Lucas regulator.

Anything else ya need to know, gimme a shout!
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Old 01-25-2006, 09:03 AM
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Looks like a fun project. There are lots of parts out there for the BSA. I've done a handful of British bikes and they are fun.
I tend to change to 12v, go positive ground (so I can understand it) and get rid of the old Lucas stuff (new stator and regulator).
Werewolf is right about the front end - find something that there are parts for and not too expensive. I normally change the neck cup and go with timkin sealed bearings (can't remember if your BSA was ball bearing or not), and if you do you can get an ID any size (1" if you find triple trees that require that).
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Old 01-25-2006, 09:17 AM
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i have manuals on cd if you would like a copy.
i have a basket a10 for someday
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Old 01-25-2006, 09:43 AM
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Quote:
Originally posted by rastoy
Looks like a fun project. There are lots of parts out there for the BSA. I've done a handful of British bikes and they are fun.
I tend to change to 12v, go positive ground (so I can understand it) and get rid of the old Lucas stuff (new stator and regulator).
Werewolf is right about the front end - find something that there are parts for and not too expensive. I normally change the neck cup and go with timkin sealed bearings (can't remember if your BSA was ball bearing or not), and if you do you can get an ID any size (1" if you find triple trees that require that).
Rastoy, those preunits don't have the stator setup like the unit construction on the later Triumphs and BSA, but a Lucas Generator in front of the cylinders (kinda like the Joe Hunt mag set ups on Triumphs). There is a place in the UK that does 12volt conversions for the old style generator, and a conversion from the mag to a points and coil ignition.
Positive grounds no biggie, once you understand it. It's like the rest of it, bass-ackwards
And the necks on the pre-units (A-7 and A-10) were 7/8" stem with ball bearings. Somewhere I saw a timken conversion for it.

I ran a 8 over Triumph (71'?) frontend on mine. Will be going to a H-D Early Sportster as the tubes on the Triumph were too thin and bent!
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