HI At the BSA rally in the Isle Of Man I was told that someone had fitted an electric start to a A65 and the information had been posted on this forum can anyone help me please as I would like to ride a Beesa again all help would be appreciated and photos if possibe thanks
I am not sure of the post you are looking for but I posted pictures of a possible fitment of the starter that I make for the triple on a Triumph twin. The A65 is a little more difficult since it does not have the flat inboard of the primary to mount a starter against. The most likely fitment is using an offset gear starter that does not require a nose bearing on the end of the Bendix shaft. Add a ring gear to the back of a Norton style clutch basket (mounted to the hub by ball bearing). Commando clutch plates allow a smaller diameter clutch so the ring gear pitch line sits outboard of the drive chain/belt. A belt would simplify things but not required. A housing for the offset gear/Bendix shaft is needed. It has ball bearings on each end of the gear with the Bendix sticking out one end. This assumes you do not want a starter hanging off the side of the engine which would be easier and less new parts although still requiring welding.
Re: Electric start to a A65 ???#41934 09/01/085:56 pm09/01/085:56 pm
Hi Thanks for your reply i have downloaded the picture of the fitment to the triumph have also been told to use T160 starter ring but not sure of the outside diameter all help is appreciated many thanks.
Re: Electric start to a A65 ???#41935 09/01/087:32 pm09/01/087:32 pm
I think the T160 starter ring is too large in diameter to fit in the A65/T120 clutch area. The triple clutch is 8" diameter and the ring teeth sits even with the O.D. I believe the twin clutch is around 7.5" O.D.
Re: Electric start to a A65 ???#41936 09/01/088:59 pm09/01/088:59 pm
Hi Thanks for you quick reply and information all of which is being noted and very helpfull its hard to get all the information together.the welding should not be a problem also your idea of the norton clutch i will try it as i have one left from when i raced classic sidecars i converted the norton clutch to use on the A65 once again thanks for your help Stan.
Re: Electric start to a A65 ???#41937 09/01/0810:03 pm09/01/0810:03 pm
Stan Making an electric start for an A65 is something I've wanted to do for years, just never had the time and spare cash, Bob Oswald of QPD in the USA did it for Triumphs in the seventies and it has been done in the UK since
I reckon doing it for an A65 would be similar, but you would have to cut out the casing above the gearbox sprocket (the Triumph casing is lower there)
Re: Electric start to a A65 ???#41939 09/02/083:07 pm09/02/083:07 pm
Hi Baza thanks alot for the photo and the information great help its something like i hope to fit one great great help have also been told to look at (sorry) a harley ring gear?? but the setup in the photo is what i was looking for.
Re: Electric start to a A65 ???#41940 09/02/083:25 pm09/02/083:25 pm
Here are a couple of photos of an A65 with the OG starter about where it needs to be. The case flange over the gearbox sprocket has to be machined to clear it. A case can be made to weld/bolt onto the back of the primary so you do not need to run an open primary. The triple ring gear barely fits inside the I.D. of the primary cover so it is too big.
Re: Electric start to a A65 ???#41941 09/02/084:17 pm09/02/084:17 pm
Here is a drawing with the Mitsuba starter fitted. The motor/solenoid were swapped (R/L) to get more clearance. This is as far forward as it can be. It would need a new housing for the offset gear with the motor/solenoid in this position but likely a new one would be required anyway. The drawing uses my alloy version of the Commando clutch. The QDP starter might be a Denso.
Re: Electric start to a A65 ???#41943 09/04/0810:03 pm09/04/0810:03 pm
Hi Dave thanks for the drawing , as i said all information helps, sorry i was late in responding to your posting but i have just picked up the bike that i hope to carry out the work on (only after doing the work on old crankcases first to make sure it works???) thanks once again for your help .stan.
Re: Electric start to a A65 ???#41944 09/05/088:35 am09/05/088:35 am
The O.D. should be 7.8", I.D. 6.97". I need to check the drawing I have with me is correct. I checked a triple ring gear in the A65 and it would take out the screw hole bosses for the primary cover but just fit inside the inside wall of the case.
Re: Electric start to a A65 ???#41946 09/05/083:41 pm09/05/083:41 pm
Hi No its for me. after a few kicks of the kickstart my knee swells up and causes a lot of pain when i am riding , my previous A65 had a A70 crank 76 bore belt drive .but i want to do a big motor 86x80.5 bore i could not start my norton crank motor unless it was push started.so its a project to see if it can be done???.stan.
Re: Electric start to a A65 ???#41949 09/05/0811:12 pm09/05/0811:12 pm
Hi Alex unfortunatly the A50 would not be able to cope with me and the camping equipment at the speed i travel and also the distance to be covered quickly with reliability I had my previous A65 from new in 30-12-1969 upto 2004 when i went to live in Thailand it let me down about 4 times in all those years .stan.
Re: Electric start to a A65 ???#41951 09/06/088:16 pm09/06/088:16 pm
stan....A65 you have a bad knee?Ijust got healed up, not good yet but better.I'm just gettin back into these "kickers" i was surely thinking about a starter motor for my bsa a-65. but alas i bought a different bike, and it has an electric start. Some hobbies for me came a little late.i 'll just kick my triumph and the bsa. [both start first kick with proper tickling].once in awhile cause i like them to much to send down the road. besides theres only people out there who want to steal them from you.i'll die and let her have them first! jmo bob s looks like that starter is going to be a bit of $$$$$$ to do anyway.
Bob S Street Rods, Kustom Kars,A BSA,Cushmans,H.Shadow ACE, Now a 2004 triumph america . "More than enough!!!!
Re: Electric start to a A65 ???#41952 09/06/0811:21 pm09/06/0811:21 pm
Putting the starter in is not a large cost, adding the new clutch and primary drive is what is going to make it too expensive for most people. There is no point in modifying the stock clutch so a new one based upon the Norton style is the easiest. That way you have a ready source for the clutch plates and spring. Since there needs to be room for the ring gear the engine sprocket and chain should be moved outward. That precludes the triplex chain so either go to a duplex or better, a Hyvo chain. The engine sprocket should have a damper built into it to take the loads off the primary chain and gearbox. Might try looking through the 70's and 80's Japanese bikes for a ring gear. Machining one would not be excessively expensive if it came to that.
It looks like the ring gear can be up to 7.3" diameter. There are two possibilities for the damper, make a new engine sprocket with the damper built in or, alternative to the Norton style clutch, fit something like an FZ750 clutch, replacing the gear drive with a sprocket and the ring gear behind. The sprocket would be a shell around the clutch. The only part I am not sure of is the space behind the primary cover. The FZ clutch is deeper but smaller diameter. I do not have a cover to measure. Making the FZ clutch narrower by taking out one or two plate sets would certainly make it fit but that would require making a new pressure plate. The springs puss on the bottom of the pockets and that is the part that has to be cut to narrow it. The hub only requires cutting down the bolt posts and plate spline. You could almost take a stock clutch basket and bore it to fit the FZ clutch inside. There is enough material around the ten holes in the BSA basket to bore the holes for the ten FZ dampers. The drawback is the thin area that sits on the FZ boss.
The starter in my drawing is a Mitsua off a H*nda car. The other major offset gear starter manufacturer is Denso (owned by Toyota). The offset gear will get the starter and solenoid up out of the way of the gearbox. Is your ring gear off one of the flat four touring bikes? Those are the only ones that I can think of with a flywheel/ring gear.