This was my understanding on the Joe Hunt timing, though I was unsure. In my reading about Joe Hunt mags they have always been fixed timing, full advance even for starting. Most every other ignition system available for our bikes has an advanced/retard feature and it seems essential for starting. Try starting a bike with k2f may at 30 degrees advance or so in the retard position. Big kick back immediately of course!
But it seems to work fine with the Joe Hunt.
Glen
Glen, keep in mind in my case I bump start so kick back isnt a problem.
The engine is very tractable and lugs two blokes around. It will pootle around in the pit lane area but the 10TT9's are not set up for idle running
I have not tried this mag on a bike with a kick start.
But as Klaus mentions if you fitted an auto advance unit in the timing cover, you could have variable ignition. I bought the mag primarily because I wanted 1. a brand spanking new mag 2. The Joe Hunts have a good reputation for methanol (long slow burn) 3. I didnt care about variable timing, full advance is all I need.
My road rocket engine has had the engine cases milled to give clearance for the mag, it wasnt a simple fit although I expected it to be. Once I'd bought the mag though I wanted to see it through.
As I also mentioned having bought a new maggie for reliability it promptly failed at two successive meetings.
That was some time ago and I have forgiven it.
For a road engine I probably wouldnt go there again if I was simply stuck for a mag.
A cable advance lucas or BTH would probably be my first choice for the road.
Tim