Since my last puzzle that was presented to the SOC I have been overwhelmed with advice and practical help from distinguished members. Special appreciation to Colin, Brian,Stan,Roger, Ian, Chris, Malc, Jeff,et al.
Yesterday the mighty roar of scotty echoed round the Staffs Moorlands as bothcylinders fired up! Not completely solved yet (it may be a problem with tracking as the renewed alternator prduces enough current to illuminate Blackpool.
Many thanks again: Vis unita fortior; watch this space. Derek
I heard your Scott from Penkridge, so check if there is any stuffing left in the Burgess.
Now, miss-fires! Usually given youve set everything up properly these are probably due to “point float” caused by a worn distributor. Miller distributors were worse than Lucas for wearing, so thats your first port of call.
If EVERTHING is O.K. put a voltmeter across the battery at about 2500/3000 revs – it should not be more than 7 volts (dependant upon temperature). If the rectifier is going down, the voltage might be higher, and suprise suprise, supplying too many volts to the primary of the coil will cause a misss-fire.
Alternatively, ride the bike until the miss-fire occurs then switch on the headlight, if it “cures” the miss-fire, you may have the problem referred to. I’ve sorted the same problem on two Brum Scotts.