RE: Converting Glow to Ignition???
We ran both two-stroke and four-stroke glow engines on gasoline in the early '90s, for an R/C duration event called The California R/C Marathon. It was held in the Spring for several years, but I don't think it's being done any more. It was an interesting competition. The only rules were you get 1/2-gallon of fuel (of your choice, so naturally the best choice was gasoline). For better mileage, not more power. Remember, this was a duration event. You got one takeoff, and you follow the airplane down a two-lane blacktop for 50 miles, out in the middle of nowhere, and then you turn around and come back, as many times as that 1/2 gallon of fuel will go. One other rule; you must not average over 55 mph. For safety reasons (and to keep everybody honest) there was a spotter posted every 10 miles who called in your number when you went past. We rented a convertible, with two pilots in the back. Some of the teams used pickups especially prepared for the event, with boat windshields atop the cab and a bench seat across the bed.
The team I was on, as co-pilot (Team LA LA) won the inaugural event in 1990, and again in 1992, using a Saito 52 four stroke on gasoline and Red Line Oil. In 1991 we tried a 2-stroke, an OS 60, running on gasoline, but the engine quit on the second lap due to the critical nature of tuning a two stroke on gasoline. Since less gasoline is required, compared to alcohol, a single click of the needle valve may be too rich, or too lean! We found the solution later on for running a two stroke on gasoline; you need a smaller carburetor. We ran one on the bench using the smallest Walbro carb available, and another using a carburetor from a four-stroke, which are usually smaller than those on two strokes.
For all of these applications we used Al Diem's 'Silent Spark' electronic ignitions. I don't know if Al still makes these units. I think he was located in Utah.
Here's some tips: Use 10 - 12% good synthetic oil made especially for two-strokes, such as Red Line Racing oil. Glow engines have plain rod bearings, and they need the extra oil. !QUOT!Weed wacker!QUOT! and other types of industrial-strength engines have roller-bearings on the rod ends, and they will live on less oil, as little as 5% or less.
Don't close cowl, since gasoline creates more heat than alcohol.
Ignition for two-cylinder engines use a single-coil/pickup system, with two spark-plug leads. They both fire on each revolution, when one cylinder is near the top on compression stroke and the other near the top on exhaust stroke, which doesn't matter.
Mixture is critical, but the big plus? Reliability, and a really nice idle. A four stroke with ignition (on gasoline or alcohol) will idle down to 1,000 rpm or less. Tick-a, tick-a, tick-a.