Originally Posted by
Pete Bergstrom
CapDave,
The only issues we have found with interference with our ignition system have all been traced back to loose connections at the plug cap. You mention that has been checked and confirmed so I'll ask a few more questions.
How close are the batteries mounted to each other?
Are the power wires from the batteries completely clear of each other or do they share some of the same routing?
Are the switches co-located or on separate sides of the fuselage?
Just a few thoughts ... love to hear your responses.
Pete
After being in the Ignition and engine business for 30 years,we found nearly all cases of RFI were caused by incorrect instalation of the spark plug cap.Many fliers think they have the cap all the way on a locked but they really do not. Not saying this is the problem with this one.The RCEXL caps are tough to get on and locked,both on the 10 MM ,CM 6 and the 1/4x32 little plug.2.4 is pretty imune to RFI ,but not bullet prof.
I can build a Ignition that will eat up a 2.4 any of them.A open spark like you have with a cap not on correctly will get to any 2.4. We have said thousands of times the snap ring on the RCEXL cap must be all the way passed the hex on the spark plug to be on correctly. The 1/4x32 must be pushed down hard and turned clock wise a small amount and then will come up a little ways to be locked on.If you can pull it stright off it is not locked on.To remove push down hard and turn CCW. Probably useless information but true.
BCCHI Used to be C&H. AMA 2500.
Bill Carpenter