Thanks Greg! Glad to read this here!Modern equipment visual on old machines ruins the looks big time.
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.
Steven
I 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.)
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://www.bt-h.biz/fm2rv--flange-mounted-twin-cylinder-16-p.asp
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.
Steven