Ricky Blade
Posts: 50
Joined: 5/26/2007
From: Loxahatchee,
FL, USA
Status: offline
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for what its worth, i also have a saito82a installed inverted in my reactor. spectrum dx7 stock dig servos. my first 4stroke and with not too much experience on 2cycle i followed manual to the letter. after break in on the bench things seemed ok. finished installing it on the plane and test running ready to fly. the drenching of fuel oils that took place was incredible! it was dripping from everywhere. i was never really satisfied with the tuning of the engine (high speed seemed to hunt and vari too much and the idle wasnt very smooth or low) i was repeatedly told "DONT TOUCH THE LOW MIXTURE SCREW! ITS SET AT THE FACTORY!" OK, I WONT TOUCH IT. ...So having to scratch this insatiable weekly itch i went flying and wiping, flying and wiping, flying and wiping, you get the picture... by now oil soaked all the covering is peeling off and its looking rough from all the patch work. (by the by, wheel pants off and 3" soft foam wheels i dont have major nose over issues if the grass isnt too tall). running omega 15% blend in both my 2 & 4 cycles and really enjoying the plane i was willing to try anything, so....i removed the cowling and with thin blade screwdriver in hand i fired it up. i just was going to adjust it a little and also see if i could find out the hunting high speed problem. OK during high speed you can see air bubbles moving thru the fuel line (full tank of fuel) and causing fluctuations in the high speed running. OK problem identified. i can fix that! now on to the oil bath and the taboo idle mix screw! while at idle trim setting i turned the mixture lean little by little, the engine started to respond nicely, you could hear it running less laborously, less smoke, oil, smoother, calmer ect. i continued adjusting and lowering the throttle servo setting till this saito82 was just purring soooo low it was hard to beleive! i let it idle for what seemed to be 10 min to see if it would stall or load up. nope, it just sat there putt putt putt putt with no complaints. next time i'll grab my mini tach just to see how low. now on to the air bubbles during open throttle. any ideas out there? ricky.
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All Forums >> RC Airplanes >> 3D Flying! >> RE: Great Planes Reactor GP/EP 3D ARF .46-.70 
RE: Great Planes Reactor GP/EP 3D ARF .46-.70 - 
As far as the bubbles, it sounds like an air leak somewhere or perhaps foaming fuel. I'd be inclined to install all new fuel line, check the tightness of the carb mounting bolts and give it another shot. I haven't heard of too many issues with foaming on this bird.