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Old 12-28-2009 | 11:04 PM
  #35  
Truckracer
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From: Des Moines, IA
Default RE: CDI interference

ORIGINAL: racerchuck

I am getting ready to set up my 1st gasser, a Zenoah G26 ei.

I was lead to believe that the 2.4G radio wouldn't get interfiered with... Is that wrong?

I also am thinking of getting one of the opti-switcched systems that Troy Built sells, so that you can switch off he engine by an open radio channel, wom't that help, or do I still need to seperate everything, old school.?
2.4 GHz. systems can be interfered with by ignition noise. But ...... they are much, much better than previous systems. If you get interference with these systems, it is almost guaranteed to be coming in through the battery and servo leads. Good installation practices go a long way towards preventing this kind of problem. See several posts in this and many other threads for examples of good installation practices.

Years ago, I flew mag ignitions using old Kraft AM radios with no problems. These ignition systems which are still very common today had no shielding on the plug lead. Yet, with good separation of components there were no problems. Even then, some people had many problems .... some no problems at all.

Many people use the opto-coupled cut-off devices with excellent results.

I don't have experience with the Zenoah ei system but other than high current draw, I can't say I've read of any other problems with it. I've seen several Zenoah engines converted to after market ignitions and the results are usually excellent. Lots written about this also if you do some searches.