ORIGINAL: Dale Campbell
I have purchased 3 new of the ASP52A 2 stroke engines. I put them in 3 differant aircraft. I ran all 3 to break them in and have the same problem with all 3. All 3 are mounted inverted and have tried everything I can think of and can not get them to idle down. They run strong at full throttle but as you throttle back to half throttle or below they quite. I have made all landings dead stick. I am using #8 OS glow plugs and changed them many times. I did notice when sitting with fuel in tank they all will drip fuel from carb untill tank is empty. Is the idle adjuster my problem or are they not good engines. Dale
ok i have some good news and some bad news
the good news is the problem is easy to solve, bad news is it takes awhile
i cant comment on the asp 52, but i think its the same as the magnum .52 and i have one and broke in 3 for other people (once they saw how mine ran)
here is the key to these engines, breakin breakin breakin,
and what do i mean by breakin? fuel your plane up, fly it at or near full throttle, then land deadstick, do this for about half a gallon of fuel and then adjust your idle, getting it to idle isnt terribly hard, getting the midrange correct is a pain because it changes EVERY FLIGHT when this engine is breaking in. so do what i do and dont try and get it perfect because you wont be able too, trust me ive tried for hours, then i got pissed at the engine and just started flying it at the only thing it would fly.....full throttle..... low and behold after a gallon of doing that i have an amazing idle, perfect transition and a beast of an engine at full throttle, better than the ax55 imo.
these engines are more work out of the box than an os, but that being said once their broken in (3-4 gallons) theirs nothing better, just be paitent