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Messages - JulianS

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Singles / Re: id problem and hello I'm new
« on: 16 February, 2018, 19:53:06 »
The C15G was the last and best of the C15 engines with stronger bottom end and gears , made mid 1966 until mid 1967. About 2300 made in total.

Singles / Re: B40 Star air filter - what's the best option now
« on: 16 February, 2018, 09:25:31 »
My 1961 B40 had a filter arrangement which was exactly the same as the C15 and just as the parts photo posted by Bess above, checking the part numbers they are also the same.

The 1965 parts book shows a slightly different assembly. Posted below.

Singles / Re: B31 crank shaft
« on: 15 February, 2018, 19:41:22 »
The ball bearing locates the crankshaft.

The roller bearings have a high load capacity, lipped rollers bearings were fitted as original equipment. The lip goes on the outside, makes it easier to dismantle the bottom end, the timing side should just fit off leaving the outer in the case and the inner on the shaft.

On the other side the ball bearing and roller outer will stay in the case and again the inner will stay on the shaft.

Stick with what BSA intended, it would present considerably more problems reassembling the bottom end if you changed to a non lipped bearing.

The Star and Garter / Re: cotter pin
« on: 15 February, 2018, 15:59:25 »
Stainless ones available on e bay. I have just ordered one.

A few years ago I bought some top quaity ones from Gold Star man Dave Flintoft

Twins / Re: Oil Pressure gauge
« on: 14 February, 2018, 18:05:18 »
You will need to find a suitable position, where there is space to fit sensor, to drill into the internal oilway between pump and the PRV, (and be sure you can clear any swarf caused by the drilling) or maybe consider if the PRV could be modified.

I see it as a very difficult modification.

Twins / Re: Oil Pressure gauge
« on: 14 February, 2018, 16:49:52 »
1. Sender needs to go between oil pump and pressure relief valve. Certainly not in either oil hose.

2. Fit oil filter in return line. Hose from return connection at crankcase - the upper one - to the inlet side of filter, then hose from outlet side of filter to return hose connection on the oil tank, again the top one.

Twins / Re: A65 Lightning rocket
« on: 14 February, 2018, 14:52:18 »
UK version would have been the Lightning, coloured gold, for 1965, or the Lightning Clubman.

Post a photo?

Twins / Re: A65 Lightning rocket
« on: 14 February, 2018, 09:55:50 »
From the 1965 US East Coast brochure.

No it has 4 positions. Lots of information in owners and workshop manuals.

Photo from 1972 owners manual.

Twins / Re: A50 plunger frame
« on: 13 February, 2018, 20:42:19 »
Originally a 1965 swinging arm frame which somebody has converted to current state.

Twins / Re: BSA 1961 A10 side stand & lifting handel
« on: 12 February, 2018, 09:02:40 »

The 1961 models (GA7 frame) did not have a lifting handle as standard. You can fit one from the earlier models but you need to drill an extra hole in the rear mudguard to mount it.

Singles / Re: B40WD gearbox oil level
« on: 11 February, 2018, 11:38:19 »
photo from the B40WD 1967 handbook.

Singles / Re: Grease gun
« on: 10 February, 2018, 13:59:42 »
This is the one I use, it 1s unbranded.

The nozzle grips the nipple and it provides copious quantities of grease. I got it when I had a B40, being aware of the need to keep those swinging arm bushes well greased.

Singles / Re: Grease gun
« on: 10 February, 2018, 11:00:36 »
The Tecalemit gun will work on the B40 given a good seal but you would probably get more grease into the swinging arm bushes using one of the bigger guns.

Twins / Re: A65 sludge trap thread.
« on: 09 February, 2018, 14:38:16 »
The plugs thread depends on the crank;

If 2 plugs then it is 7/8 x 11 tpi BSF.

If only one plug in then it is 7/8 x 20 tpi. I think UNF or Cycle not sure which.

The change happened around October 1964 according tothe Service bulletins.

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