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Ok thanks.Nope, same unit. That is the dynamo, it generate the electricity that charges the battery that feeds the ignition circuit. The dynamo is cylindrical in shape and is clamped to the cases behind the rear cylinder. The housing behind the gearbox dip stick is where the dynamo enters the primary case to be driven from the primary chain as it passes over the clutch sprocket. The Alton would replace the dynamo.
You might be a bit disappointed as there is a lot of non standard stuff on this bike. In this picture alone you can seeI am particularly interested to know where Robert has mounted his regulator. The Vincent twin doesn't have much spare space to fit accessories. (No space to spit through looks good.)
Thanks. Starting to understand it better now.The BTH is the new electronic magneto. Actually it is an almost self contained CDI unit, the coils being mounted separately from the charging/triggering unit. It fits in the original magneto position and resembles a magneto. So now your ignition is entirely independent of the state of your charging system and/or battery. Just like it was when it left the factory.
https://vocspares.mamutweb.com/Shop/List/Ignition-equipment/37/1 PR22/bth/1 on the VOC spares web site.
Dead easy to install and setup. I took the RITA off the Shadow and packed it away, I'll keep as a back up. I found my BTH used on evil bay and took a chance. I'm seriously considering one for the Comet in the future, currently it has a Boyer, with the drawback being if the ignition being dependent on the state of the charging system and battery, though the Boyer uses less juice.
Dear Robert,You might be a bit disappointed as there is a lot of non standard stuff on this bike. In this picture alone you can see
1) 34 mm Mikuni flat slide carburetor with big ugly K&N filter
2) 200 watt permanent magnet alternator with a J section poly V belt drive from a jack shaft in place of the generator
3) Voltage regulator for #2
4) Round thingy is the Vacuum Operated switch that changes the advance curve on the Screaming eagle ignition when the vacuum drops off
5) Can't really tell but a large alloy fuel tank with non standard taps
6) Thornton rear springs and shock
Pretty much been like that for 20+ years
View attachment 26896
Yep, It gets riddenDear Robert,
A great photograph that tells me that this is my kind of bike, one that has been built to ride not just to look at. I am not too interested in originality and I don't do shiny. If I wanted mine to be more standard I would only have to remove the disc brakes, aluminium petrol tank, Mikuni carbs, foam air filters, car alternator, AVO front damper, AVO rear monoshock, Triumph switch gear, ... .... .... no, I like it the way it is, I just want to ride it.
Your finned regulator actually looks like part of the cylinder head at a glance. I've just ordered £50.00 worth of assorted electrical bits so in the near future, I'm going to do a complete rewire and repositioning of things.
If you do Facebook there is an Alton page worth looking at.
The regulated supplied with your Alton alternator and fits neatly on top.
Dear Bill,I bought some of these, For the next time I do electrics, They do, 2, 4, and 6 pin types, Only about £6 for a male / female pair, I might have to use a sealer, To keep the weather out. Cheers Bill.
Ah ok, I thought I was starting to understand.And dont forget you still need a dynamo and regulator to provide lights unless you are a day time rider then you only need enough for the stop light and a dab of horn fodder in your battery
Yes, all makes sense. Having recently moved house, I don’t have a workshop and working on my three bikes in a single garage is a bit of a juggle.Danno, rather than waiting to get your bike on the road and then visiting your local section why not just go along. It is most unlikely that anyone will mind that you do not have a Vincent in working order. In fact most wont mind even if you do not have a Vincent. They just like to meet people with an interest in Vincents. This way you can see who you get on with and which you feel you could invite back to your den. Provided it is one of the knowledgeable ones you will get more information from a ten minute visit than days of poring over words on here. Provided that you have learnt to walk upright, not drag your knuckles on the floor or make messes on the carpet you will fit right in.