BSA Owners' Club Workshop Discussions

The BSA Workshop => Twins => Topic started by: trophy on 05 Sep, 2021, 12:35

Title: Kickstart splines and carburation problems
Post by: trophy on 05 Sep, 2021, 12:35
My apologies for this thread as it's about my 1938 350 AJS and not the A10.  However, as the problems are related to all makes of motorcycles, and as this is the only Forum I belong to I hope you will have a look and, if possible, you may be able to help. 
Problem 1;- The splines on the kickstart lever and also on the quadrant have worn away and the replacements for both are unobtainable.  Is anyone aware if there is a company which can make good the splines on these items?  If so I would be interested to hear from you.
Problem 2:- The Amal carburettor 217 from the top of the mixing chamber union nut.  The float chamber needle is not passing and holds the level at a midgies d##k below the Amal letter on the side of the float chamber.  Is this normal?
All answers appreciated.
Title: Re: Kickstart splines and carburation problems
Post by: chaz on 05 Sep, 2021, 14:45
cant help with most but Draganfly have cut off and replaced the splines on my T100 and B40 rebuilds, both good jobs. they did the work after I sent the quadrant to them, whilst there they replaced a finger I thought iffy.
they also offer the replacement splines if you fancy doing yourself, Ive seen them on ebay but suspect all come from one common supplier.

as its a common job for the quadrant, someone may do splines for the kick start but takes more of a kick than the quadrant does so may be needs  agood welded joint.
you could ask PES as Mark is pretty handy. https://pesltd.uk/?canvas=home
Title: Re: Kickstart splines and carburation problems
Post by: Mike Farmer on 05 Sep, 2021, 20:17
 :) :) :)

I've put new splined shafts on several BSA a50/65gear changes, I cant answer your Q viz another type. The new splined extensions are readily available but it will need maching and brazng. If you have a friendly machinist the cost is reasonable.

Its necessary to machine out and slightly counter bore the old splined shaft opening,  Braze the new one in and then machine the brazing.

There are several available on the bay and I have not had any probs with them.

Mike 8) 8) 8) 8)
Title: Re: Kickstart splines and carburation problems
Post by: trophy on 07 Sep, 2021, 11:02
Many thanks for your suggestions Chaz and Mike, I will look into them.  Sorry about the 2nd problems description.  Should have read:-  The 217 type Amal carburettor was leaking petrol from the top of the mixing chamber union nut and I was wondering if this was caused by the float chamber petrol level being too high.  The float needle is working OK and not passing. 
Title: Re: Kickstart splines and carburation problems
Post by: Mike Farmer on 08 Sep, 2021, 11:29
 :) :) :)

Just in case you haven't found them---it is Ebay item No352510892390.

Mike 8) 8) 8)