"Del does a jig.........."

Or "politically correct" a "fixture."

This thread:

Arguing with Egag over outboard mag coils





Attempting to evaluate used ignition coils in these old outboards as well as some of the replacement china crap that is all over the map. But the tester device drives the coils with a pulse train........and is designed more for automotive

Remember--these are magnetos---driven by the magnet on the flywheel, not a battery. So I began to wonder if my results are "factual."

So last night I tore down and old 4hp Evinrude, not worth fixing, very low compression. And what you see is the block, crank, and enough mag parts to mount and test two coils. For now I'll drive it with a socket in a drill on the flywheel nut. Eventually I hope to belt up a motor. The one you see lying there is a big heavy 3/4hp. Anything else I have is hopelessly buried for now

So this should create a "real world" test setup to evaluated various coils. Plus there are two independent coil/ points setups so they will be comparable.

What a great idea, seems like the best way to test coils. Del you’re always one to come up with a unique idea!! Can’t wait to see how well it works!

Thanks, and don't know why I didn't think of this earlier. I will modify the mag plate. The problem with testing coils on an unmodified mag or "on a runable outboad" is that you must remove the mag plate to change coils, because the high tension lead comes in from the bottom. I will cut/ drill a clearance in this plate so that is not necessary.

Test the coil..............tes the coil.............Teslacoil!!!

A 2n2222 and 9V battery LOLOL