YS140DZ and Heat

[Koenig, Tom]

Ed, this may or may not be relevant.
 
I 've just had a full Australian summer on mine,regular 100's +, Yes.. I
have found heat does affect this beast somewhat. I can only tell you that I
ran mine ( I'm out of the air right now) borderline too rich on days that
were stinking hot and severely dry. We are in the midst of a devastating
drought so our humidity is non existent.
However I too had a problem just like you describe. I was chasing my tail
for a few days. Power was sensational one day and gone the next. I found
that the phenolic spacer was getting "crushed" i.e. my rear bolts were just
about falling out. I retightened those and all the horses were  back in the
stable! But then I had to spend the next two flights re-adjusting everything
back to where I was before.
 
Good luck, let us know how you go.
 
Tom
 
PS: Coolpower Heli 30%, OS F

-----Original Message-----
From: Ed Deaver [mailto:Divesplat1 at msn.com]
Sent: Monday, 19 May 2003 12:04 PM
To: NSRCA Disscussion
Subject: YS140DZ and Heat


Hey everyone.  Am wondinring if anyone else has noticed the DZ running
different once the temp is over 90 degrees.
 
The engine has been great but on the 2 hottest days so far, I can't get it
to run throughout the entire tank.  Without changing anything on the plane.
For example, yest the thing ran wonderful, today at 98 degrees or so it only
ran 4-6 min then died on a downline.  Tried to richen up the engine and it
got worse(high end)  The transition from idle to full rpm had a sag in the
air so leaned out the pump reg a little and things improved.
 
My question, do I have to make these changes on a regular basis with weather
changes??
 
Magnum DZ fuel, APC 16.5X12.5W, OS#5 pllug.
 
Thank You for any thoughts.
 
Ed


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