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Messages - AWJDThumper

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Singles / Re: Starfire oil tank filter
« on: 17 February, 2018, 08:48:11 »
The BSC thread on the oil tank has to be a sensible imperial size and 0.864" is not one of them - 7/8" must be correct. It looks as though the thread on the filter will have been formed on a lathe rather than using a die and it's not difficult to cut it to the wrong diameter. Your pair of filters might well have been manufactured by the same person who must have got the dimensions wrong for the thread. It's not the first time this has happened!

Singles / Re: B40 Star air filter - what's the best option now
« on: 15 February, 2018, 17:09:49 »
Picture of air filter off my B40 (although it seems to be missing the perforated concave plate). Note that, unlike the arrangement for the C15 in which the filter is attached to the back panel, the filter for the B40 is separate. Instead it plugs into the metal adaptor which screws on to the end of the carb and then projects through the hole in the back panel.

The Star and Garter / Re: cotter pin
« on: 15 February, 2018, 12:41:58 »
PS. Like most cotter pins, it will be made of mild steel!

The Star and Garter / Re: cotter pin
« on: 15 February, 2018, 12:40:56 »
Burton Bike Bits will be able to provide one by mail order. Ordered some parts the other day from them that arrived less than 24 hours later.

Singles / Re: B40 Star air filter - what's the best option now
« on: 15 February, 2018, 11:38:08 »
Is it a used B40 panel + filter rather than a C15 version?

Singles / Re: B40 Star air filter - what's the best option now
« on: 14 February, 2018, 19:21:23 »
Essentially, the front circular corrugated gauze filter is pop riveted to the rear concave perforated plate. The corrugations provide separation between the front and rear surfaces. On the filter I've got lying on my bench, there is an even finer sheet of plastic gauze sandwiched between the two metal screens. They have the rubber seal around the outside of the filter.

I assume you are missing the filter housing from the rear panel on the B40 which I believe from memory is simply brazed on to the panel.  Is that correct?

Twins / Re: A65 Lightning rocket
« on: 14 February, 2018, 09:02:58 »
Plenty of pictures on the web - a highly tuned version of the Rocket intended for the US market from 1965.

Singles / Re: B40 star best set up for wrong carburetor
« on: 13 February, 2018, 23:01:33 »
I was really referring to the difficulties you have in starting the bike referred to in your original post which mainly depends on the pilot jet and the pilot airways. The slight differences in the settings in your table will affect how well the bike runs and particular how much power it produces but it won't affect how well or how badly the bike starts. For example, the slightly bigger cutaway will affect how smoothly the engine picks up from idling and, if not correctly chosen, might cause a slight hesitation or lumpiness. A slightly non-optimum main jet or less than ideal choke size or lack of air filter will almost certainly result a reduction in power (20-30%) in the produced. So, if you're having difficulty in starting the bike, it's the pilot jet system that will be the thing to worry about.

Singles / Re: Unusual ZB32 frame
« on: 13 February, 2018, 17:48:39 »
Possibly a conversion of a ZB32 rigid framed bike to swinging arm rear end?

Singles / Re: Whats good about motorcycling?
« on: 13 February, 2018, 06:57:03 »
Sums it up perfectly ;D

Singles / Re: B40WD gearbox oil level
« on: 12 February, 2018, 13:53:26 »
I've bent a fair number of footrests back into shape without any problems of them or the frame breaking if that is what you are worried about. I don't think I've ever had to use heat during the bending process. If you're lucky, you should be able to slip the tube over the end of the foot peg and then have the leverage required to bend the footrest bracket back into shape. I've used a press before now but it was very awkward.

Singles / Re: C15 won't start.
« on: 11 February, 2018, 20:02:41 »
Are they definitely connected to the correct rockers?

Singles / Re: B40WD gearbox oil level
« on: 11 February, 2018, 20:01:57 »
If it was me, because I have a lot of old fork legs lying around, I would take the footrest rubber off, slip on one of the pipes and carefully bend the footrest back to where it should be. Alternatively, you could use a club hammer on the end of the foot peg to bend it back down but that is a bit more brutal.

Singles / Re: B40WD gearbox oil level
« on: 11 February, 2018, 18:36:52 »
There should be about 1" of clearance between the RH footrest and the level plug which is probably only about 1/2" in length. Has your footrest been bent inwards towards the engine?

Singles / Re: C15 won't start.
« on: 11 February, 2018, 18:27:25 »
I assume you only took the head off with the engine left in the frame to re-do the valve? If so, it looks as though you wouldn't have disturbed anything else in the process such as the timing or carb settings. The only thing that comes to mind, and apologies for suggesting it if it isn't the case, but did you connect up the push rods correctly; that is, the outer push rod going to the inlet rocker?

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