RCpilot
from what I have read on this site 15.5mm is too big ,recomended is up to 13.5mm and I
cant get that to work either same engine as you (short shaft)I had a single needle walboro
swaped it out for a stock size duall needle,ch ignition I'm turning 7500 on18x6 zinger
Ithink you may be over proped a little at 16x10 try 16x8 I tried a 10mm carb yesterday and
couldnt get a consistent rpm on hi rpms kept going up and down four stroke a littlethen run ok
then loose 500 rpms drove me nuts .I went back to the stock carb ,7500,rock steady I dont get it.
if you figure this stuff out give me a shout will ya my neighbors want to linch me for all the noise
and swearing ! really poco 242 said that he has used this zama that I have(13.5mm) with some
success on another ryobi and on his 25's ,ive gone through two so far with not so much success
it runs but I run out of needle trying to lean it out i need to lower the float some and try again
good luck let us know how it comes out


wow I got to learn to type faster
hey what saize tank are you guys using for how much flight time?