I was getting back into the swing (ho ho) of starting Tiger Moths yesterday. I got one to start on the second blade, which I was quite pleased with.

What's the igniton system, electronic or (dare I say it) magnetos? The Tiger's engine (and pretty well every magneto-ignited aero piston engine, which means most aero piston engines) has an impulse coupling to retard the spark and give it a bit more welly -- does the bike have anything similar?