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Messages - STAR TWIN

Pages: 1 2 3 [4] 5 6 ... 9
46
The Star and Garter / Re: MOT
« on: 26 May, 2017, 06:48:19 »
It's pre 1960, not 1962. There is an MoT exemption form available on the DVLA website which can accompany your initial registration.

47
Twins / Re: A65 6v - 12v Alternator
« on: 20 May, 2017, 14:56:23 »
With old alternators (bare and encapsulated) you need to be sure that the rotor and stator diameters match. For reasons best known to themselves, Lucas changed (reduced I think) the rotor diameter and stator inner diameter at some point in the 1970s.

48
Twins / Re: A65 6v - 12v Alternator
« on: 19 May, 2017, 07:02:53 »
Yes Ray, that should e it. Best of luck!

49
Twins / Re: A65 6v - 12v Alternator
« on: 18 May, 2017, 22:49:30 »
A good explanation but don't forget that here we are connecting a 2 wire alternator to a 3 wire harness. In this case, we can ignore the harness green/yellow wire which goes up to the light switch and connect the 2 remaining harness wires (green/black, white/green) to the alternator wires. It doesn't matter which alternator wires are connected to these 2 harness wires as each connects to a side of the rectifier (or preferably control box, as recommended).
An alternator on open circuit can give in excess of 26 volts hence the need for a control box or zener diode to control voltage output. The old 3 wire solution predates the availability of zener diodes or decent electronics and was adequate in much the same way a BSA 7" brake was considered adequate.     

50
Twins / Re: A65 6v - 12v Alternator
« on: 18 May, 2017, 06:56:01 »
I refer the honourable gentleman to my previous post. It's the cheap (free) option and it will work. Why not try it before forking out upwards of 200?
Your bike doesn't need a 3 phase alternator. What would you be doing with all the extra wattage produced? Extra spotlights and an electric start? Heated gloves and suit (now there's an idea...). 

51
Singles / Re: B40 WD gear ratio
« on: 17 May, 2017, 06:25:18 »
Cheapest option is still to fit a Victor engine sprocket and primary chain. Works wonders.

52
Singles / Re: B40 WD gear ratio
« on: 16 May, 2017, 06:27:24 »
With a 19" rear wheel, it might become a bit wobbly on its centre stand. Worth a check.

53
Twins / Re: A65 6v - 12v Alternator
« on: 13 May, 2017, 15:10:44 »
The important wires are the Green/black and White/Green. They go from the rectifier to the alternator. Just ignore the Green/Yellow one. That's to do with the old 6 volt system and is not required.

54
The Star and Garter / Re: BSA B31 1957
« on: 11 May, 2017, 06:37:18 »
Perhaps not so far these days, but I do put in 200-400 mile days on my BSAs regularly (B31, A7, A10). I don't have a modern bike and the BSAs do all I require.

55
The Star and Garter / Re: A7 ST number plates query
« on: 10 May, 2017, 06:41:56 »
That sounds prudent. I have an Indian Enfield which still has its Indian front number plate. However, the format is totally unlike the UK one so that can be no confusion with an existing UK registration. As this was its original registration, it adds a bit of historic character to the bike.
In the same vein, I think you would be justified in having an original military registration on the front of an ex-military bike as it is a historical link.
I can see why the NMM and possibly the odd traffic cop wouldn't like you having a valid registration number from another machine on your bike. You could signwrite "Maudes Trophy Replica" on the number plate and avoid controversy.

56
Singles / Re: B31 Valve Seat Grinding
« on: 10 May, 2017, 06:29:04 »
Generally 45 degrees would be correct. You can get into all sorts of discussions and complications with what is best - especially in racing circles - but for most road bikes 45 degrees is it.

57
The Star and Garter / Re: BSA B31 1957
« on: 08 May, 2017, 14:39:17 »
Dreadful things happen to cherished bikes once sold. My first B31 was sold to a friend - cheap as a favour - and 2 weeks later it was needlessly destroyed. He thrashed it mercilessly on full retard until it seized. He then sold it to a scrapyard. It was a good bike too...
At least I now have another B31. 

58
Twins / Re: Smoking
« on: 08 May, 2017, 06:48:21 »
Check again after a few hundred miles. It'll probably be OK.

59
Twins / Re: Smoking
« on: 07 May, 2017, 22:24:01 »
Usually a worn inlet valve guide.

60
Twins / Re: Dynamo Drive Chain
« on: 06 May, 2017, 21:20:03 »
I take a look at the dynamo chain grease when I remove the outer timing cover. It can go undisturbed for years.

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