I've got my engine on the test bench and running on the glow plug. i'm running it on 1 part nitro 2 parts gasoline. with a 20x6 prop i was getting 6900rpm. Which was pretty good, it is just over 20lbs of the thrust but only about 40mph, is that enough speed or should i look for a different prop. also i switched out the zama carb for a walbro 38B carb off of a stihl weed wacker, for ease of tuning and it did make it alot easier to get running and keep running.
The engine ran all the tests and idle without any glow plug driver. I am still amazed how easy it was to convert.