I was only using that as an example, you can't fry a motor doing this if the needles are set well, and there is good air flow. DA may not recommended it, and for there own reasons, the safest way to break in a motor is in the air.

However if done right I don't think it will even harm a DA, and will give it a chance to break in. When its winter out, like we get in some places, its nice to get a jump start for the following season, tune up that motor, run it in some. But for 10-20 hours and no mufflers, good grief, I pitty your neighbours.

My 3W manual for my new 80i says to:

"start the break in process of the engine on a test stand for approximately one hour. This time should be used to get familiar with the engine. Do not run the engine at full throttle for more than ten seconds during this test stand break in. The reason for this is that you are not getting the normal cooling effect that you would if the engine was in the model flying.

Another method that can be used for break in would be to set the engine between 2000-2500 rpm and let it run for 4 hours. After that the engine would basically be broken in."


Well I ran it for 1 hour just to see what kind of RPMs I would get, tuned it up well, and I will leave it at that. Now I know what props will work