ORIGINAL: ameyam
Mr Cox,
you read it selectively. I said two things:
1) I can run it indoor only at idle else the neighbours will complain
2) When I run it rich at full throttle it gets hot
Anyway, I will try other prop and fuel combinations. Interestingly, as I remember from a couple of years back, we used everything from 14x4, 14x6, 14x8, 15x4 on this same engine and it never seemed to overheat or develop squishy compression then. The more I think about it the more I feel it is either a blockage in the carb or a fuel problem. Remember it continues to run even at 4-4.5 turns out of the HSN needle?
I am getting new alcohol to make the 0% nitro fuel tomorrow and I have already flushed out the carb like I wrote earlier. I will keep my fingers crossed for Sat / Sun.
By the way, I have just decided to but a DLE20 for another model. There will be no further new nitro engines for me after the 2x55ax, 1x75ax, 1x72a, 2xFS91SII, 1x120ax I already have (1x72a, 1xFS91SII, 1X120ax are still in box, both the 55ax have been shelved for the time being. Yes, there is one engine reserved for each airplane I have, but most are still in boxes)
Ameyam
you are avioding the real problem, your prop is too big, unless you really really need to keep the noise down then you need to go back to the 14x4 and you will not have problems, when the engine makes alot of noise thats a good thing, means the engine is making more power (not always but in this case it is true).
the 0% nitro will not help that much, it may help some but not that much, it will have an even harder time turning those props
it is not a fuel or carb problem, please just run the 14x4 and see if it overheats, if you run it with that prop and it still overheats get back to us