ORIGINAL: opjose
ORIGINAL: jimmyjames213
i suck the fuel back into the jug, less chance of spillage later.
as for nitro %, 0% works, 5% is plenty, anything above wont do much besides give you a few rpm and empty your wallet.
Agreed.
There was an article not too long ago in one of the RC magazines that went into Nitro usage versus engine size.
The bottom line is that you are merely wasting money using more than 5% nitro on engines larger than .60 up.
On engines smaller than this more nitro was found to help... e.g. 10% for .60 down to .46's, and 15% on smaller engines.
Up to the point I read the article I was using 15% and 10% on my 1.20 through 1.80 engines. I glad I read it, as I then switched to 5% without a single hic-cup. I may have adjusted the engine by a click but that was the only change.
Given the difference in the fuel prices for lower nitro fuels, I was quite happy with the results.
I now run 5% on my O.S.'s, Saito's, GMS's, Tower Hobbies, SuperTigre, Magnum, ASP and K&B engines.
Note at higher altitudes your results may vary...
I haven't noted any differences in temperatures down to 50 degrees F, but I tend not to fly at temps below this.
i run 0% in my .40 sized 2 strokes, some of them i can tell no difference (w/o looking at a tach), they run the exact same as they do w/ 5%-15% (gms.47, os .40fp, os.46la, magnum.40 gpa)
my gms .47 will idle at 1800-2000 rpm on 0% nitro all day long.
others like my ax55 you can tell its lagging a bit 0%
new enginess dont like 0% as much. my new mangums (2 .46's and a .52) run on 0% but dont idle perfectly or have good throttle response, however the more i run them the better they get, when i throw 5% in them its a noticible difference, but give them a few gallons and they wont mind the 0%.
my magnum .52 4 stroke would run on 0%, the idle was is a little high at 3000 rpms, it likes the 5% much better (idleing around 2200 rpm)
as for more nitro wearing out your engines faster, unless you have predetonation issues (the engine is fireing before the piston gets to the top of its stroke), it would make such a tiny difference (if any at all) between 0% and 15%