ASP FS61AR
#1
Thread Starter
ASP FS61AR
Temp: 14C/57F
Fuel: Rapicon HLS 15%
APC 12.25x3.75 - 10600
APC 11x7 - 10300
APC 12x6 - 9600
APC 13x4W - 9200
APC 13x6 - 9000
RAM 13x6 - 8900
APC 12x8 - 8400
Fuel: Rapicon HLS 15%
APC 12.25x3.75 - 10600
APC 11x7 - 10300
APC 12x6 - 9600
APC 13x4W - 9200
APC 13x6 - 9000
RAM 13x6 - 8900
APC 12x8 - 8400
#5
Thread Starter
RE: ASP FS61AR
jeffie8696; Thank you for the suggestions! Cam timing is correct, and the glow plug is an OS F. The valves might be on the loose side, but I'm not sure. A .0015" feeler gauge will pass freely, a .004" will pass with some friction. I set the valve clearances yesterday before I ran the engine. The valves seem to seal better after I adjusted them.
I'll try a fresh bottle of fuel and see if that changes anything.
I'll try a fresh bottle of fuel and see if that changes anything.
#7
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Join Date: Jan 2004
Location: Apple Valley, CA
Posts: 158
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RE: ASP FS61AR
My ASP FS61AR in a Thunder Tiger Ready
APC 12x6 propeller: 10,200 rpm.
Powermaster fuel: 15% nitro & 18% oil
Elevation: 3000 ft
Temp: about 60 degrees F.
Glow plug: OS F
Engine has a problem with mid-range. Runs rich between 1/4 and 1/2 throttle. Anyone else have this issue?
APC 12x6 propeller: 10,200 rpm.
Powermaster fuel: 15% nitro & 18% oil
Elevation: 3000 ft
Temp: about 60 degrees F.
Glow plug: OS F
Engine has a problem with mid-range. Runs rich between 1/4 and 1/2 throttle. Anyone else have this issue?
#8
Thread Starter
RE: ASP FS61AR
ORIGINAL: wrob
Engine has a problem with mid-range. Runs rich between 1/4 and 1/2 throttle. Anyone else have this issue?
Engine has a problem with mid-range. Runs rich between 1/4 and 1/2 throttle. Anyone else have this issue?
#10
Thread Starter
RE: ASP FS61AR
jaka; setting the low speed needle richer makes the problem worse. The rough sound and amount of smoke also indicate that it is running too rich in the midrange. The more I lean the low speed needle, the better it runs in the midrange. When leaning the low speed needle, I get to a point where the mixture at idle is so lean that it won't pick up rpm when I hit the throttle, but the midrange is still too rich. It seems impossible to get both the idle mixture and the half-throttle mixture correct at the same time. All suggestions are welcome.