Britbike forum Forums British Motorcycle specific Brands Bsa bulletin board where do the condensors go on a 1969 Tbolt?

where do the condensors go on a 1969 Tbolt?

this one



i bought this 69 some time ago and put it into the shop waiting for me to have more time. it has a horribly bodged electrical system-- the PO cut off all the Lucas bullets and replaced them with poor quality blade connectors, which both makes the connections dodgy and made many of the wires too short. he messed up a Boyer install as well, and hooked the black box up to the battery directly, bypassing the ignition switch. complained that the battery wouldnt hold a charge.

anyway, ive got a stock harness coming from british wiring, and for reasons i cant explain clearly to myself im going back to points and rectifier/zener.

taking off what appears to be the perfectly good Boyer and a tympanium too.

ive already got a reasonably good AAU, points plate, and the charging stuff too, but i dont have any idea where the condensor pack goes. this one:



up under the seat, by the rectifier?

under the tank?

someplace else?

anybody have a source for the mounting bracket and cover for these things?

looking for a grab rail too, and the side reflectors.

My '67 Lightning originally had a 4CA advance unit and breaker assembly, where the condensers are mounted on the breaker plate. I converted to the 6CA setup and so had to find a place to mount the condensers. I believe I got the bracket and cover (and the condensers) from British Cycle Supply, but it was a long time ago so I can't be sure. I mounted them above the oil tank, under the seat, but again, it was a long time ago, so I don't remember exactly how.

Hmm, now that I think of it, I may still have that stuff; I will take a look.

Sorry, I went through all my cast-off Lucas stuff, and I don't have one of those brackets or covers. I think you should be able to source it though; try BCS, Walridge Motors, Baxters, etc.

I think I just taped the bracket to the tube steel. Since this does not provide a good ground connection, I must have run a wire from the bracket to ground.

theres a short diagonal horizontal bracket with two holes on the left, under the seat just above the oil tank, forward of the bracket that the rectifier bolts to. maybe the condensors go up thrre?the original harness is too messed up to tell anymore

i can put em anywhere, but im taking this thing back to stock if i can

Yes they do. I would also but a red wire from one of those mounting bolts back to the battery.

yes , above oil tank
on a diagonal bracket ... with a ground wire ... like allan suggested .

damn

a picture is worth a thousand words. thank you.

baxter sells the mount NOS, so ill check today there and at BCS.

as far as i can tell from my rudimentary knowledge of BSAs, this one is original save for the later tachometer and silencers.

the harness was a bit of a compromise. this 69 has the later headlamp toggle instead of the earlier rotating 88SA switch, but it has the earlier ignition switch on the headstock instead of the frame. then its got the later oil pressure switch, but has no wiring for later turn signals anywhere. the zener is up under the triple tree too, rather thsn under the seat. so i got the later of several 69-70 harness options with the oil pressure switch and unnecessary turn signal wires, but with the correct zener leads and headlamp toggle. ill run some external jumpers up to the ignition switch.

i think BSA electrical systems were assembled at random from a contually-changing pile of boxes. no other explanation seems to fit.