Mick, good point. I missed that requirement.

Rgds
Andy

Hi Roger, thx for your reply. The bike is already 12 volt, I just need to convert it from +ve earth to -ve earth. As far as I can tell it'll involve re-polarising the generator for -ve earth and to swap out the regulator for a negative earth version? Is it that easy or am I overlooking something?

Hi all, I ordered and received an electronic ignition (pointless distributor conversion) mod for my SQ4 and found I'd screwed up and ordered a negative earth kit (DOH!). Exchanging it would be simple enough apart from the fact that I'm in Australia and Dragonfly are in the UK so there would be a con...

Dave, many thanks, I contacted Iron Horse Spares and they are able to supply the gear. Just gotta hope the british post problems have been sorted. Last item I ordered from the UK took 2 mths to get here, it must have come via row boat!

Thx for the replies, I will retain the duplex chain and just fit the double sprocket to the older dynamo/dizzy combo. You do raise a valid point Bob, I need to check the number of teeth on the single sprocket from the older machine to ensure the ratios remain the same, otherwise the dizzy will move ...

H All, I am still unable to source a replacement 12 tooth distributor drive gear, however a mate has a 1954 Mk2 SQ4 which is on the never never restoration plan. I hit him up for a look and use of his distributor and drive gear. Who'd have thank it, the drive gear is different from mine. His dizzy d...

Hi All, I've found the drive gear on my Lucas DKX4 distributor is badly worn, the worm gear on the dynamo armature shaft could also use renewal. First question, anybody know where I can get hold of the 12 tooth driven gear mounted on the bottom of the distributor? Dragonfly have them on backorder fo...