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 |
RE: ASP FS61AR
Seems a little low, my Enya 60 turns an APC 12X8 to 9200. Perhaps with a little more break in, my Enya is very "experienced".
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RE: ASP FS61AR
I agree, the numbers seem a bit low. This is after ~3 gallons. I'll just pretend it's a 52. :D
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RE: ASP FS61AR
Iwould check the usual suspects. Cam timing, valve lash ,glow plug heat range.
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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. |
RE: ASP FS61AR
You seem to have covered the basics. Yea maybe a different jug of fuel will help.
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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? |
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? |
RE: ASP FS61AR
Hi!
If rpm alters at low setting the low speed needle is set too lean! |
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.
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