ORIGINAL: gkamysz
ORIGINAL: chashint
You asked how much oil came out of the vent port.
The fuel tank is 360 cc the bottle is 500 cc.
The engine is 300 rpm fat at WOT, the LSN is set as lean as possible to have good quick transition to WOT.
50% of the tank was run at WOT the rest was run at mid throttle and maybe three minutes at idle.
I would guess a little less than 1 oz is in the bottle (29 cc).
That's rather interesting. Assuming 20% oil, there was 2.4oz of oil in the tank. ~40-50% of that made it past the ring into the crankcase. This assumes the crankcase was already at the average running oil volume and that there was no extra oil in the crankcase, such as after run oil. That's actually quite a bit more than I expected. In that case, I think we could run much less oil than we do in four strokes.
I did not think about posting the fuel details, sorry. I will also edit the earlier post.
There had been no additional oil added to the crankcase between engine runs.
The fuel, it is a mix of 1 gal Cool Power, 3 gal Wild Cat, and 1 gal Omega all of them are 15% nitro.
This mix yields 17.6% oil (1% castor. 16.6% synthetic), 15% nitro, 67.4% methanol (these numbers are rounded to the tenth).