Ignition question
 

I have a Slick 6393 mag on left and Electroair ignition on right. The Slick has retard points but I have no need for vibrator or Slickstart because the Electroair can start the engine. Question is what to do with the mag wiring so that it won't fire early and kick back. One possibility is to leave it off until after start but eventually someone will start with it on and potentially cause damage. What have others done about this?

I should add that I have toggle switches and not the usual key switch.

Perhaps ground the magneto p-lead while the starter is engaged?

Personally, I don't like adding any complexity to the ignition switching. It is supposed to be simple and reliable. :)
Can you label it off for start? That's a first choice.

Another way, IF you feel you have to "move a switch" is to use a 3 position toggle, labeled OFF, START, RUN. The middle position will do nothing (you do have to remember to jump the poles on the back of the switch so the mag stays grounded). But it should prevent the switch from being thrown to the run position during a start.

Vic

The easiest solution is to start only on your EI and keep the mag off until the engine is running.

I have two mags and no EI, but the principle is the same. My left mag is a retard breaker and I start on that mag alone. I don't have a traditional keyed rotary ignition switch either so I manually select L, R, or Both for the mags but I do it with one rotary switch vs 2 toggles. My starter is a physically separate switch.

I have a similar setup to you and am using the keyed ignition switch like this one - http://www.aircraftspruce.com/catalo...?clickkey=5735

My Lightspeed is on the "Right" side and my mag on the "Left". I simply turn the key to the "R" position and start. The "L" position is not live while starting. To do my mag check I will move the key to the "L", observe the RPM change and then move the key to the "BOTH" position.

I'm pretty sure there's a drawing for this in the Aeroelectric Connection.

This is really a wiring question, so I moved it to the correct forum----applies to virtually all models not just the 10

Aeroelectric article
We used two mags in the RV-10 and wired them as per Bob's method.

Thanks all. Second question for those with one electronic ignition and one mag...how much rpm drop is acceptable when the ei is cut out for a mag check? I'm seeing 150 rpm drop from 1700 rpm when I switch off the ei.