DA 50 Plug Cap
 

I recently damaged the spark plug cap on my DA 50 in a nose over. Actually it removed it completely leaving just the plug wire itself. I have repair kits, but was unsure if DA uses a resistor in line before the spark plug, it looks like resistor plug wire, which would negate the use of the resistor, but since the repair kits I have contain the resistor, I was unsure whether to use it or not? Anyone know?
Thanks.

RE: DA 50 Plug Cap
 

Use the resistor!

RE: DA 50 Plug Cap
 

DON'T use the resistor IF the plug wire is carbon made. Your spark plug will become very hot.
Use the resistor ONLY when the plug wire is made of metal.
Insert a piece of metal rod with same length as resistor instead.

Regards

RE: DA 50 Plug Cap
 

It was my understanding that the resistor was needed only with non-resistor plugs. Is this wrong??

AV8TOR

RE: DA 50 Plug Cap
 

DA engines use CM-6 plugs which are non resistor plugs. Every DA I have been in contact with has used the resistor in the plug lead. There may be exceptions but there is a reason DA supplies resistors with their replacement caps. If you don't use the resistor, I don't know how you would connect the plug lead center conductor to the spring that makes contact with the plug top connection. Just like in the Rcexl ignition, one end of the resistor pushes into the plug lead center conductor to make contact there .... the other end makes contact with the spring in the top of the plug cap. Its really a very simple system that can only be assembled correctly one way.