Hi All,
I have an original BTH magneto fitted and from my experience it gives easy starting with the lever pulled back enough to prevent kickback, But I do not want to risk damaging the electric starter drive components for obvious reasons
This is what Steve wrote in his reply to me
"problem is that the more you retard the timing manually the weaker the spark gets due to the magnets not lining up with the coils in the armature and there is often not a strong enough spark to start the engine with the electric starter
You have to fit an automatic advance retard, sorry"
Below is the text from one of the information pages sent with the initial reply
""The amount of technical ability needed to fit the electric starter:
You will have to have the ability to strip and re-build an A10 engine, or know someone who has.
It is now where as much work or as difficult as striping and re-building an engine but that is the sort of ability you will need.
You will also have a motorcycle bench lift or have access to one
Good set of workshop tools
There is a small milling job to be done so you will have to have access to one or know someone who could do a small milling job.
N.B.
I have now fitted a few electric starters and I have found that when using the electric starter they are far more sensitive to kickbacks. A bike that doesn’t seem to kick back with a kick-start can kick back when using the electric starter.
I have found up to 14 degrees difference between the 2 firing intervals with the K2F magneto, with a typical difference being about 3 to 5 degrees
So if you time up 1 cylinder to 33 degrees BTDC fully advanced the other cylinder may be either 28 or 38 degrees BTDC it is important to get them the same for good running of your bike and also to prevent a backfire, which can damage or destroy the sprag clutch.
There can be quite a few causes of this problem, which I will let you know the main ones in another e-mail but in the meantime,
To properly check your timing you will need.
1 degree disc
2 spark plug DEAD STOP, not a TDC plug tool
3 one of these special timing lights specially made for magnetos
4 pointer
Picture of the equipment enclosed""
John