I would like to fit a magneto cut out to my 1929 flying squirrel. It has a BTH KD2 magneto serial no. AL6, 7K165378. Grateful for information re achieving this. Stopping by putting my hand over the carb mouth doesn’t lead to easy restarting!
Hi John, if you are stopping the engine with a view to restarting in in a short time you would be better off stalling the bike until you can rig up a cutout device. If you are leaving the bike overnight the the hand over the carb. bell mouth while you open the throttle has always worked for me when re-starting the following day, on even days later. Interested in your feedback on this, best wishes Jeff Reed.
Thanks ! Jeff, I had been a bit wary of going down the stall route. I had been advised against trying to change gear( hand change) unless the engine is running. Presumably a gentle rocking forward and back helps to take the bike out of gear?
It’s all in Technicalities ! The left-hand inverted lever on the handlebars operates the half-compression valves when pulled back about half way, then when pulled right back it operates the mag kill gizmo, which sits just in front of the radiator. If you don’t have those parts fitted take a cable from the connection on the magneto points cover to a cut-out switch on the handlebars, or a horn button. Keep it easily to hand as a safety measure then if your throttle should stick open you can instantly kill the engine.
Just to confirm, on the edge of the Bakelite / brown plastic cover, there is a screw and a hole into which a wire could be joined. Is that the place for the cutout lead? Nothing very specific found in Scott technicalities. I don’t have the lever on the handlebars. Tried to see if I could attach a picture, but no success with that.
Many thanks for your advice, John
Hopefully this will show a picture of the end cap. John[attachment=0:nveyxy4p]image.jpeg[/attachment:nveyxy4p]
When you take the mag end cover off you should see a brass strip with a small carbon pad in the centre which makes contact with a screw that holds the contact assembly in place. When this screw is earthed, the mag stops generating. If you connect a wire from the end cap to a horn button, the mag will be earthed via the horn button and handlebars whenever the button is pressed thus stopping the engine.
Dave, Thanks for the reply. Just to be sure I get this right, exactly where should the wire be attached? Is the screw at the side of the cover the right place to attach the wire?
If you take out the screw you will find that it has a tapered end. The wire goes fully into the adjacent hole, then as you replace the screw it spreads and splits the end of the cable, making a good firm contact.
Thank you, Brian that’s exactly what I needed to know. I thought that might be what I should do but I was having visions of scorched Bakelite!
It wouldn’t do that anyway, as you are just earthing the low tension lecky, not the HT stuff.
All wired in today and working perfectly. . Thank you all for your advice to this new Scotter.