Mintor setup

[Dean Pappas]

Hi Jason,
Morten has probably got it right ... granted neither of us has the advantage of actually hearing the engine. The pipe is probably too short, and the F plug in back is probably too hot, forcing you top do other wierd things with the idle and top end mixtures.

Put the recommended plug in both holes, pull the pipe out a full inch or two and start again. The engine should neeedle through the pipe jump predictably. Get the idle set so that it the engine snap transitions from idle well. Then check the mixture a 1/2 throttle: if it is not dead lean, then fly ... If it is, then push the pipe in some and start over.

Once in the air, if the transition from mid throttle - WOT is lean (as compared to the idle to WOT transition) or sags, or pings then shorten the pipe. If it is rich compared to the idle-WOT, then lengthen the pipe.

When you are done, check that a WOT 10 degree dive doesn't drive the engine over-rich. If it does, then shorten the pipe, a 1/4" at a time. Is this engine broken in yet? I mean really broken in? As my 140 broke-in, the best setting moved maybe 1/2" as the compression got good enough to get the engine through the midrange with the shorter pipe.

Talk Soon,
	Dean


-----Original Message-----
From: Jason [mailto:jshulman at theriver.com]
Sent: Monday, May 26, 2003 12:58 PM
To: discussion at nsrca.org
Subject: RE: Mintor setup


I forgot, my set-up is as follows:

A5 front, F rear.
High rise 3M header, not cut.
ES 140S pipe (1/8" gap)
PowerMaster 15/16
Richened the low end 1/4 turn from stock
Main needle 1 3/8 out

Jason

-----Original Message-----
From: discussion-request at nsrca.org
[mailto:discussion-request at nsrca.org]On Behalf Of Jason
Sent: Sunday, May 25, 2003 11:33 PM
To: discussion at nsrca.org
Subject: Mintor setup


Well, finally went flying today (without 40 mph winds) and tried the A5/F
combo. Still not super smooth transition. Leaned out the low end (I think,
counter clockwise) and transition was smoother on the ground, but still
loaded up in the air. I didn't go richer (clockwise?) cause of frustration
and sun burn, so that'll be tomorrow also. Am I doing this all wrong?

Here's my real problem. I am flying basically an 11lb AS. No prop I've tried
from a 16x16-19x8 2B's to 15x13.5 &15.75x13 3B's and 15.25x12 4B can really
slow the plane down. The best seems to be the 15.75x13 3B and tomorrow I'll
try the 15x11 4B, but it seems that the motor is just winding up on the
downlines. Then it takes 1/2 the box to slow it down again so I can make a
smooth transition to full. This makes some of those rolling and snapping
passes a bit too fast. And forget the vertical maneuvers...they're horrible.

Is it just because the plane is a pig or cause the 3M is a 2-cycle (or
operator error)?

Thanks,
Jason
www.jasonshulman.com


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