ORIGINAL: psuguru
ORIGINAL: Korps
ORIGINAL: jimmyjames213
(most 4 strokes like 15%+ nitro, you can run a 2 stroke on 5% which is much cheaper than 15% and will last longer)
I apologize for hi jacking the thread Switch.
This brought up a question in my mind...
If you are running a four stroke (ASP .71 Four Stroke engine) with 5% fuel - what would be the disadvantages of this?
If the fuel is blended for 2 strokes, you may find the excess oil causes the motor to quit at low rpm due to plug fouling and the low nitro content will give you detonation (pre-ignition or pinking) at high rpm, so you'll wind up running rich to avoid that, making your low rpm problems worse.
uhhhhh no. you would have predetonation problems if you are useing higher nitro, not lower. 2 and 4 strokes can and do use the same fuel (and it wount foul your plug). 4 strokes need to be set a little richer than two strokes because they have more moving parts.
if the .70 is new the idle is set wayyyy rich from the factory. if he hasnt messed with it that would be his problem. my .91 would idle reliably on 5% just at a higher rpm than 10-20%
as for the slow plane. if he is useing a 13x6 tell him to try a 12x8
what plane is it on?