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<DIV><FONT face=Arial size=2>I need advice. I have been trying to dial in a
Mentor 140 for 6 or 7 months. I have about 7 or 8 gallons of fuel thru it. It
took forever to get it to run half way right but it finally started to work. I
have it in a test plane because I still don't trust it. After break-in I tried
to fly it but it would surge at any low power setting. The people I got it
from sent me a new pump and carb. It will now idle well but mid-rang is so rich
it will 4 stroke. I was told to lengthen the pipe, which I did. It was set
at 1/2 in. between the header and front of the pipe. By the way the pipe is
the aluminum pipe from Mentor. The header is a 30mm. rise from Mentor.
</FONT></DIV>
<DIV><FONT face=Arial size=2>I leaned the low end and set the pipe at 3/4 in.
spacing. I also leaned the top end. I have tried lean and rich on both top and
bottom. It always runs very rich mid-range. I am using 15 % Cool Power. 17x8N
APC. RPM top is 8800. I richened it to 8400, 8500, 8600. Idle is very good and
reliable. When I pull verticle, that is when it leans out and runs like it
should, however blowing the top of the box at 80 mph ain't
cool. </FONT> </DIV>
<DIV><FONT face=Arial size=2>I was told to lower the pump pressure, which I have
not done yet. </FONT></DIV>
<DIV><FONT face=Arial size=2>I have run YS,OS,Supertiger, Hano's for 15
years, but this is the most flustrating thing I have ever
seen.</FONT></DIV>
<DIV><FONT face=Arial size=2>The power is scary, however I would like to have
throttle control instead if a "parked and gone" switch. </FONT></DIV>
<DIV><FONT face=Arial size=2>HELP</FONT></DIV>
<DIV><FONT face=Arial size=2>Bob
Schofield </FONT></DIV></BODY></HTML>