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Twins / Re: Reflective number plate - good or bad?
« Last post by A10 JWO on 19 June, 2019, 12:07:19 »
I can't see how a reflective number plate improves safety, it obviously makes it easier to read so you can get nicked easier. I always get pressed ally plates made by Tippers ( class ). Where a high vis jacket if you are worried about safety. 
Twins / Re: Test Ride and voltage question
« Last post by A10 JWO on 19 June, 2019, 12:03:28 »
I have 12 volts with the engine running. I have removed the two alternator wires from the rectifier and it is showing 17 volts AC at about 2000 rpm I don't have a rev counter. Does this now show that the alternator is kicking out enough power ? thanks.
The Star and Garter / South Derbyshire Camp
« Last post by BEEZABRYAN on 19 June, 2019, 11:42:19 »
The weather is looking good :)

The Plough Inn
Wheatley Road
Two Dales
Near Matlock
Twins / Reflective number plate - good or bad?
« Last post by Splodger on 19 June, 2019, 10:45:27 »
I'm in the process of fitting new parts to my Royal Star, e.g . mudguards, wiring loom, tank,  new wheelrims, Norton straights on risers etc. My rear mudguard is a Wasp, it is not original Royal Star shape/section so a rear lamp needs to suit. It follows that the rear number plate must be accommodated differently from the original chunky housing.
I'm aware of a general feeling that old bike(r)s should not be afraid of modern safety improvements such as indicators so what are the thoughts about reflective (modern) number plates? What do you think?
Singles / Re: Saddles on Rigid B31
« Last post by Mark B on 19 June, 2019, 10:43:39 »
I can't post pictures on here, but if you PM me your email address I can take some this evening. Regards, Mark. 
Twins / Re: Test Ride and voltage question
« Last post by Caulky on 19 June, 2019, 09:35:57 »
What is the battery voltage with the engine running at about 2000 rpm?
You could temporarily wire in an ammeter inline with the fuse or a meter on the amps 10A range.
It will show a discharge without the engine running and a charge at 2000 rpm.
Check the fuse holder continuity/resistance with it disconnected from the battery.
Singles / C10 charging / dynamo
« Last post by Rick Rybicki on 18 June, 2019, 21:00:43 »
Well, done about 90 local miles on barn find. Running as expected.
Yesterday it let me down. My fault, a connection I'd made came adrift and shorted out causing the 20 amp fuse in my new wiring harness to blow.
Fixed the fault, put in new fuse, all working well......except it's no longer charging the battery.
CVC was professionally rebuilt and was working.
The dynamo is no longer showing any significant output. 0.3 to 0.5 volts when engine is reved.
Question.....could the short circuit and subsequent blown fuse have de-magnetised the dynamo?
All was working fine before the short circuit and everything is working fine except the lack of charge.
Help please. Thanks, Rick.
Welcome to the Forum, looks nice and where did you get the front mudguard. I have just finished an OIL T/Bolt, heavy old beast.
Hi There
Whilst appreciating the heritage of BSA it seems that their swan song of 1971/72 seems to be looked down upon. One could argue that they should have looked in that direction back in the mid sixties instead of peddling out the same old designs. And triumph took their design and went forward with it (although some thought for too long - sounds familiar). Any way I now have a 1971 thunderbolt undergoing strip and rebuild, a 1971 Lightning that is spotless and a 1972 Lightning Cafe racer which is spanking.
Twins / Re: Test Ride and voltage question
« Last post by A10 JWO on 18 June, 2019, 15:22:48 »
I put a good charger on the battery and it is showing fully charged at 13 Volts. I checked the two alternator leads and have a buzzer when I put the meter on. I also have a buzzer across all terminals on the solid state rectifier and the leads to the Zenner and Battery. I have all the same readings on my A65 stable mate. Is it possible that my bike is charging and I am not picking up the reading. I did disconnect the battery whilst it was running and it cut out straight away. How far can I ride the bike on a new fully charged battery if it is not charging. Thank you.
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