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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › Bad day for me today!!
09-07-2006 12:20 AM  14 years ago
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patriot21

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Byron,MN

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Bad day for me today!!
So it was 75 degrees out with basically no wind...i decided to take the afternoon off to go fly.... get to the field... start up my 90se and take off for my first flight. flying around for about 2 minutes doing some mild aerobatics....then i start hearing a wierd sound from the motor... i thought maybe my pipe was coming off.. so my gut tells me to bring her in...just as i get about 3 feet off the deck to land the motor spools up and just quits....(OS91 szh) i figure maybe a glow plug...but the thing was just smoking terribly so i knew what happened...i turned on my temp guage and it read 312 degrees...
i pulled the motor out and the piston was cracked...a section of the top on the side was broke off and there was a crack from the outside to the center.... this motor was new in feburary with about 30 gallons on it... bearings were about 5 gallons old...i have always run this motor around 195 to 210 degrees.. why did this happen? anybody have any ideas...? I am just thankful i wasn;t inverted or something where it would have caused a major crash

My needle settings were
low: factory
mid:1 1/4 turn out
high:1 1/2 turn out
no different then any other time
My Sponsor:VISA
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09-07-2006 01:16 AM  14 years ago
jimco

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east texas

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Man, that sounds poor. Check the clunk line in your tank, if its very old, could be collapsing and leaning you out. I have a thirty that is pulling the same stunt, after about 2 minutes. I just have not changed it. Either that, or junk in the carb . All that I can add.Honey, where's the check book, it's Fedex again
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09-07-2006 01:49 AM  14 years ago
Leif

rrElite Veteran

USA

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The usual suspects are crud in the fuel system and cracks in the fuel tubing.

If you have a fuel filter, it can get plugged up and cause a lean run, or you can get a particle caught in the carb.

Fuel tubing can get micro cracks that suck in air, but the clunk tubing is the most common area of concern. Cracks tend to form at the fuel nipple that allow the tubing to draw in air as the tank empties. The clunk line would be my bet.

Leif
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09-07-2006 03:01 AM  14 years ago
patriot21

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Byron,MN

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dang... well i hope os comes through for me...this engine is totaled..My Sponsor:VISA
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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › Bad day for me today!!
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