The BSA A7-A10 Forum

Technical (Descriptive Topic Titles - Stay on Topic) => Frame => Topic started by: bigmike76 on 15.12. 2016 09:58

Title: Alternator model Exhaust
Post by: bigmike76 on 15.12. 2016 09:58

Hi, I have an ex police alternator model and from what I believe the left hand exhaust pipe was different on this type, for this year I have just run it with the standard pipe with extra spacers etc to get clearance, the only problem is the silencers don't run quiet symmetrical. For next year I would like to get it correct.  Does anyone know where I might be able to get a correct pipe or have any drawings to have one made up? cheers

Title: Re: Alternator model Exhaust
Post by: Billybream on 15.12. 2016 12:35

Hi Mike.
Try Armour Motor Products.
They still manufacture here in the UK and offer quite a range for BSA .
Have there s/steel system on my Super Rocket and pleased with quality and service.

Title: Re: Alternator model Exhaust
Post by: bigmike76 on 31.12. 2016 11:18

Looking at pictures, the exhaust from a 1957 model has more of an ark around the primary compared to the later exhaust, Thoughts?

Title: Re: Alternator model Exhaust
Post by: bikerbob on 31.12. 2016 12:52

When they changed the pipes in 1958 they also changed the the silencers so if you fitted pre 1958 pipes they will not match up to the later silencers.

Title: Re: Alternator model Exhaust
Post by: oldnyk on 10.03. 2018 23:13

I have recently bought an A10 alternator model not really knowing much about the A10 but always wanted an A10,now achieved the ambition at 70 !! *smile*.I have been cleaning the old thing up and had noticed the pipes seem to be a bit offset and was wondering about that then found this post.The V5 states first registered 1963 but a very knowledgeable friend of mine who knows a lot about Brit bikes thinks its a 1959 ex Police Bike.Wonder if the Alternator models were specially made for Police use ??