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Messages - JulianS

Pages: 1 2 3 [4] 5 6 ... 42
Twins / Re: 1962 Oil Tank level
« on: 17 December, 2017, 13:13:14 »
A65B is prefix for the Rocket model engine.

The model of your bike is dependent on frame, only a despatch  record check would tell if your bike was built as a Star or Rocket. The full width hub models, 1962-1965, frames were all prefixed A50.

Pre War / Re: 1932 Blue Star
« on: 14 December, 2017, 20:51:08 »
Parts book shows a left and a right brake pedal for 1932 BS.

I think the right pedal came with hand change.

The 1933 catalogue Blue Star page has some detail.

Singles / Re: C15 ammeter
« on: 14 December, 2017, 12:52:45 »
Little tabs around the chrome rim fold over and hold it in place, thats if it is a Lucas item.

The tabs do break off when they have been bent and straightened a few time.

Singles / Re: What do I have?
« on: 09 December, 2017, 18:09:05 »
Often called the "Clipper"

BB34A engines in CB34 frames.

First photo from 1957 catalogue.

Second photo is from Glass's motorcycle check book and shows start and finish frame numbers for the B34 competition model.

Last frame given CB34 634.

I will send you a PM, check under "My messages"

The Star and Garter / Re: Hepolite pistons
« on: 09 December, 2017, 12:23:33 »
Edges of the rings showed only partial contact, not bedded in,  after just over 1000 miles - changed the rings to NOS Brico which bedded in very quickly.

Link takes you to a bit more information about new hepolite;

Singles / Re: Oval throttle valve C15
« on: 08 December, 2017, 16:26:41 »
Sounds like a new or a better used carb would be best option.

Singles / Re: C15 petrol tank tap
« on: 08 December, 2017, 13:34:21 »
You could just change the plunger which is what leaks?

Twins / Re: LED h/light conversion
« on: 08 December, 2017, 09:32:44 »
Experience with 12 volt conversions vary significntly.My own started back in 1976 when the JG units were first sold by Dave Lindsley.

Used with the standard 6 volt dynamo with a slight change to the connections of field coil and brushes.

For years ran a 55/60 watt H4 bulb and commuted to shift work on country roads. Had to change brushes and bearings several times and 2 armatures.

The unit failed in 2010 after 24 years. Dynamo commutator solder melted. Replaced unit with another and obviously changed the broken bits..

Now using  LED bulbs in rear. speedo and tacho with a 35/35 HS1 Osram night racer up front. These provide significantly more light than the cheaper 35/35 and 45/45 bulbs available. Dynamo has an easier life now no longer commuting in the dark.

The Star and Garter / Re: Hepolite pistons
« on: 07 December, 2017, 13:42:14 »
There are new "hepolite " pistons on the market.

I think from Wassell.

They come in a repro hepolite box.

They are very cheap, around 100 and the rings are reputed to be very poor quaity, (my own experience with an A10 was that the rings had not bedded in in over 1000 miles and were fit only for scrap) some sellers will sell the pistons but replace the rings with Italian made GPM ones due to quality.

Old Hepolite will have a number inside which can be looked up in the old catalogues and decent rings. And cost around twice as much.

Twins / Re: A65 charging
« on: 05 December, 2017, 21:00:13 »
The extract from Lucas Service literature explains the zener.

It is important that the surface of the zener and the heat sink are good to allow the heat to be conducted away, and also the zener has a low torque figure to prevent damage to its brass body - only 2 - 2.3 ft/lbs. See service bulletin.

Twins / Re: Tachometer
« on: 05 December, 2017, 17:59:31 »
You dont say what you already have, assuming starting from scratch you need;

The inner timing cover - part 42 - 153 casting number 42 - 154.

The cable adaptor and drive spindle.

Oil pump worm with tacho extension.

The first come up on e bay sometimes, the next 2 you can buy new from a good BSA parts dealer.

Twins / Re: A10 Electronic Ignition
« on: 05 December, 2017, 17:31:54 »
I am very happy with my K2F, but if I was going electronic I would choose the BTH;

No worries about flat batteries or failing dynamos causing ignition failure.

Twins / Re: Tachometer
« on: 05 December, 2017, 17:23:07 »
Tacho driven from oil pump take off at front of inner timing cover is 3;1.

Photo is the Smiths chronometric 3;1 on my 1962 A10. Number RC 1303/03. The can be very expensive.

Just order a cable for a 1960 on Super Rocket. Any decent dealer should be able to supply the correct  2ft 10 1/2  inch item.

Twins / Re: Fitting Auto advance and electronic ignition A10
« on: 04 December, 2017, 19:23:37 »
Most electronic ignition systems will include a programmed advance/retard and will need a fixed pinion not a mechanical auto advance. The only exception I can think of is the Thorspark conversion.

Twins / Re: Oil coming from breather on my A10 1961
« on: 04 December, 2017, 17:01:54 »
Wet sumping usually caused by the anti syphon valve in sump being obstructed or a worn pump, pump not seating properly on crankcase or the hard to get at non return valve not seating properly. Or a combination of any.

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