Re: How do Atom Computer Ignition modules work?

[legendre]

quote debe:

I use the lawnmower as a test as well. Another reason a 2 stroke may not idle properly can be a badly worn piston or cylinder. I had one that wouldn’t idle properly due to a badly worn piston. The give away in this case was exess fuel spraying out of the carby.

This particular motor is a real thorn in my side. I can count on half-a-hand the number of machines (of any sort) that have genuinely left me flat-footed – and this is one of them.

Pardon the vulgarity, but I’ve been inside the frickin’ thing so many times, I feel like I’m married to it. And it’s not like this is my first rodeo, you know?

But I think you’re on the right track, using a simple air-cooled engine to develop this stuff. I need to find a vertical mount Briggs or Tecumseh, that I can set up as a testbed for these purposes. My very good friend happens to have such a rig, already fixed to a slab of wood. Might be time to head over and borrow that item from him – at least then, I can look at dynamic timing curves & ignition power on an actual runner. If not, maybe another junker mower will show up in the back alley.

ETA: Did you collect circuit data from any of the ATOM modules, other than the ‘red’ unit we’ve been looking at? It would be great to build a table that links color / application and circuit values..