Restoration of the Magneto/ignition system
Posted: Tue Apr 27, 2021 2:03 pm
With your permission I am opening a new thread.
I think there is a need to make the separations between the variety of problems I am experiencing with my bike,
such as the leaking carburetor problem that I am now putting aside and interested in focusing on the problem I will describe here, especially after you commented to me about the condition of my ignition assembly. I have attached close-up photos of that ignition assembly.
Since the problem I will describe right away can come from so many factors, I decided to first make a perfect overhaul of the entire ignition assembly.
The problem is extreme & rapid overheating of the left cylinder (10-20 seconds!) and inactivity of the right cylinder.
I switched between the ignition wires and the spark plugs and the problem still exists. Valves were set for the 3rd time. Ignition timing was also checked again and again. The right spark plug (cold cylinder) gets wet as it is not burning any fuel.
I had an electric arc that jumped in the safety gap at the magneto safety system, that was treated since really on this side the gap was about 8mm, and after I pushed the wire soldered there to a range of 11mm, the problem disappeared.
What I want to know is first of all what do you think about the general condition of the complex, other than being dirty? I mean, what parts do you think I should replace here? Which to clean and return?
I was recommended to get an Emerald Isle replacement magneto, I would love to know where the best place to purchase one is in Europe (I'm from Israel)? as I'm sure shipping from the US will make the purchase impossible for me.
I also suspect the ignition advance/retard unit that I think the PO never touched, I certainly did not. It could very well be that this is the original assembly and that it was never disassembled and cleaned. Again I would love to hear your opinion: which part to buy new and which is just for cleaning and returning? After disassembly and assembly does this mechanism require any calibration? Where to buy these parts in Europe?
I also would like to replace the Allen head hex. screw that holds the complete rotor unit in place. Can I not use a standard screw with the same dimensions? It is not clear to me why its special shape is needed.
Many thanks to anyone that will express his opinion and give of his ideas.
I think there is a need to make the separations between the variety of problems I am experiencing with my bike,
such as the leaking carburetor problem that I am now putting aside and interested in focusing on the problem I will describe here, especially after you commented to me about the condition of my ignition assembly. I have attached close-up photos of that ignition assembly.
Since the problem I will describe right away can come from so many factors, I decided to first make a perfect overhaul of the entire ignition assembly.
The problem is extreme & rapid overheating of the left cylinder (10-20 seconds!) and inactivity of the right cylinder.
I switched between the ignition wires and the spark plugs and the problem still exists. Valves were set for the 3rd time. Ignition timing was also checked again and again. The right spark plug (cold cylinder) gets wet as it is not burning any fuel.
I had an electric arc that jumped in the safety gap at the magneto safety system, that was treated since really on this side the gap was about 8mm, and after I pushed the wire soldered there to a range of 11mm, the problem disappeared.
What I want to know is first of all what do you think about the general condition of the complex, other than being dirty? I mean, what parts do you think I should replace here? Which to clean and return?
I was recommended to get an Emerald Isle replacement magneto, I would love to know where the best place to purchase one is in Europe (I'm from Israel)? as I'm sure shipping from the US will make the purchase impossible for me.
I also suspect the ignition advance/retard unit that I think the PO never touched, I certainly did not. It could very well be that this is the original assembly and that it was never disassembled and cleaned. Again I would love to hear your opinion: which part to buy new and which is just for cleaning and returning? After disassembly and assembly does this mechanism require any calibration? Where to buy these parts in Europe?
I also would like to replace the Allen head hex. screw that holds the complete rotor unit in place. Can I not use a standard screw with the same dimensions? It is not clear to me why its special shape is needed.
Many thanks to anyone that will express his opinion and give of his ideas.