Evolution .40 engine
08-10-2009 | 07:04 AM
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From: Nottingham,
PA
Evolution .40 engine
I flew my old trainer yesterday, about 4 years old. Hangar nine easy 2. Still flies great! But yesterday, during the first flight about 9 minutes into the flight, it dead sticked. Landed with no issues. Second flight was all good. Third flight, 7 minutes into the flight it dead sticked again. Glow plug has maybe five flights on it. Held plane vertical and inverted each flight before take off. so I know the mix was set right. It was HOT and humid yesterday. Might have just got too hot? What do "ya'll" think. It is just a fun relaxing plane to fly. Will check the clunk tonight, to be sure that it's not too close to the sides of the fuel tank. But pretty sure that is ok. No indication of air in the lines. Just replaced the tank and all the lines and added a filter about three months ago. I have foam all around the tank too.
Thanks,
Thanks,
08-10-2009 | 07:27 AM
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From: Jacksonville, FL
RE: Evolution .40 engine
Added a filter? might want to check your filter....make sure you can blow through it.....I had a filter that was partially blocked once......
As far as the engine goes...did you tune for max then richen 1/4 turn or so.....Hot and humid is not friendly to engines or airplanes...as the air is less dense and the moisture...well were not dealing with submarines here...LOL....fly around at 1/2 throttle.....see what happens..Good Luck
As far as the engine goes...did you tune for max then richen 1/4 turn or so.....Hot and humid is not friendly to engines or airplanes...as the air is less dense and the moisture...well were not dealing with submarines here...LOL....fly around at 1/2 throttle.....see what happens..Good Luck
08-10-2009 | 07:33 AM
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From: Nottingham,
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RE: Evolution .40 engine
Fuel is not that old. Maybe 5 months. Kept in the basement in a dark closet (10% mix). I got a new jug of 15% for the decathalon I'm putting together. Hope to maiden it Wednesday night. Will try some of the 15% in the trainer on wednesday and see what happens. Will check the filter too.
Thanks
Thanks
08-10-2009 | 06:38 PM
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From: Lacona, NY
RE: Evolution .40 engine
Everyone is right. Also check for any pin-holes in the pressure or glow fuel line. I had a Goldberg 62 Skylane with a Evolution .46 in it.
I had a pin hole in the pressure line to my muffler. It was right near the nipple on the glow tank. The nipple was made of brass and it had a slight burr. After about a year of flying the vibration mad the tubing a little week at the nipple and I had a "Dead Stick."
It took me a while to find it... I looked for every other reason for the problem, before checking on my lines.
I had a pin hole in the pressure line to my muffler. It was right near the nipple on the glow tank. The nipple was made of brass and it had a slight burr. After about a year of flying the vibration mad the tubing a little week at the nipple and I had a "Dead Stick."
It took me a while to find it... I looked for every other reason for the problem, before checking on my lines.
08-10-2009 | 07:44 PM
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RE: Evolution .40 engine
Remove your filter from the plane and install it on the pick-up line for you fueler if you need one. I haven't used a filter in years and haven't had any issue related to debris in fuel. This way you'll know the fuel going into the tank will be clean instead of possibly putting contaminated fuel into the tank and catching it at the engine.
Hogflyer
Hogflyer
08-11-2009 | 06:33 PM
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From: Lacona, NY
RE: Evolution .40 engine
ORIGINAL: Herb Calvin
Hi build76, I've had humidity cause similar problems. Had to adjust needle value constantly. Might help might not
Hi build76, I've had humidity cause similar problems. Had to adjust needle value constantly. Might help might not
You're not kidding. I had more trouble with humidity in the hot summer more times than I can count!
08-12-2009 | 05:38 AM
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RE: Evolution .40 engine
Bill, this has been a strange week, humidity wise, for us in this part of the country. As said above, I've also had similar problems with constant adjustment to get it right, and it never really seemed right. The power curve was off and I couldn't seem to do anything about it. It didn't dead stick, but it sure felt sluggish.
CGr.
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08-12-2009 | 12:03 PM
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From: Poolesville, MD
RE: Evolution .40 engine
Evolution engines have those @#$%^&* limiters installed on them.
The needles also tend to "walk" while the plane is in flight.
That means that while you may have the engine perfectly tuned on the ground, after flying around a bit, the needles will move, causing the tuning to go off during flight and you end up with deadsticks.
Last weekend a veteran flyer with a Pulse XT and an Evolution .40 was experiencing deadstick after deadstick, usually after 3-4 minutes or more.... though he had his engine fairly well tuned.
I walked over, re-adjusted his engine and placed wire ties over the clips to increase their friction against the needles and immobilize them.
I told him to fly.
I left after his fourth uneventful flight.
He called me that night to thank me for the quick fix.
The needles also tend to "walk" while the plane is in flight.
That means that while you may have the engine perfectly tuned on the ground, after flying around a bit, the needles will move, causing the tuning to go off during flight and you end up with deadsticks.
Last weekend a veteran flyer with a Pulse XT and an Evolution .40 was experiencing deadstick after deadstick, usually after 3-4 minutes or more.... though he had his engine fairly well tuned.
I walked over, re-adjusted his engine and placed wire ties over the clips to increase their friction against the needles and immobilize them.
I told him to fly.
I left after his fourth uneventful flight.
He called me that night to thank me for the quick fix.
08-12-2009 | 03:29 PM
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From: Nottingham,
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RE: Evolution .40 engine
ORIGINAL: opjose
Evolution engines have those @#$%^&* limiters installed on them.
The needles also tend to ''walk'' while the plane is in flight.
That means that while you may have the engine perfectly tuned on the ground, after flying around a bit, the needles will move, causing the tuning to go off during flight and you end up with deadsticks.
Last weekend a veteran flyer with a Pulse XT and an Evolution .40 was experiencing deadstick after deadstick, usually after 3-4 minutes or more.... though he had his engine fairly well tuned.
I walked over, re-adjusted his engine and placed wire ties over the clips to increase their friction against the needles and immobilize them.
I told him to fly.
I left after his fourth uneventful flight.
He called me that night to thank me for the quick fix.
Thanks all, will definitely try the wire tie fix next time out to the field.
Evolution engines have those @#$%^&* limiters installed on them.
The needles also tend to ''walk'' while the plane is in flight.
That means that while you may have the engine perfectly tuned on the ground, after flying around a bit, the needles will move, causing the tuning to go off during flight and you end up with deadsticks.
Last weekend a veteran flyer with a Pulse XT and an Evolution .40 was experiencing deadstick after deadstick, usually after 3-4 minutes or more.... though he had his engine fairly well tuned.
I walked over, re-adjusted his engine and placed wire ties over the clips to increase their friction against the needles and immobilize them.
I told him to fly.
I left after his fourth uneventful flight.
He called me that night to thank me for the quick fix.
Thanks all, will definitely try the wire tie fix next time out to the field.
