New Mintors

[Bob Miller]

RC Car engines are in a very HOT environment.  Engine manufacturers
recommend 12 -14% oil.  More oil causes them to run too hot

Bob M
----- Original Message ----- 
From: <patterndude at attbi.com>
To: <discussion at nsrca.org>
Sent: Tuesday, May 13, 2003 7:56 AM
Subject: RE: New Mintors


> Tom,
> How's that again?  Use less oil and the engine runs cooler with more
power??
> How can that be?
> --Lance
> > The Mintor factory says don't use MORE than 18% oil. I have talked with
> > them and they say running 16% oil will give you more power and the
> > engine will run cooler. I think it is best to break in with 18% oil.
> >
> > Tom Collins
> > BuyRC.com
> >
> > -----Original Message-----
> > From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]
> > On Behalf Of patterndude at attbi.com
> > Sent: Monday, May 12, 2003 1:34 PM
> > To: discussion at nsrca.org
> > Subject: RE: New Mintors
> >
> > Eric,
> > The manufacturer specs call for 18% oil in the fuel, as do most
> > manufacturers.
> > Going with 16% may not be necessary.  You already have the strongest
> > engine
> > around.
> >   I haven't seen anyone post much more info than I posted originally.
> > Jim W
> > has a reliable setup, it sounds, and he's happy with the power, but my
> > setup is
> > getting a little more.  I have the Mintor carbon pipe and the Mintor
> > header cut
> > 1.5".  A 17x12N turned 8450 at 80 degrees on 10% Magnum fuel on Sunday
> > this
> > weekend.  Why run less oil with that kind of power?
> >
> > --Lance
> > > Lance,
> > >        I much prefer to have a tight engine. (Most engines that we
> > receive are a
> > > compromise so that the users don't break them). I would suggest that
> > the
> > > break-in instructions need to be a bit more comprehensive. The 170 may
> > also be
> > > different to the 1.40. (The Moki needed a similar break-in.) BTW it
> > was not
> > > cowled in very much. I had removed the top to accommodate the DZ pump.
> > I then
> > > removed most of the front to accommodate the carb. (The Hydeout is
> > quite narrow
> > > at the spinner.)
> > >
> > > I tried using two different plugs on my modified OS 1.60 and one
> > always died. I
> > > will switch to the recommenced A5's when I get a cool run and see how
> > they do.
> > >
> > > The vertical was strong even though it was just a 16" prop. It was
> > also nice and
> > > quiet. Looking forward to trying some of my 3-blade props later on.
> > >
> > > Eric.
> > >
> > >
> > > -----Original Message-----
> > > From: discussion-request at nsrca.org
> > > [mailto:discussion-request at nsrca.org]On Behalf Of
> > patterndude at attbi.com
> > > Sent: Monday, May 12, 2003 1:11 AM
> > > To: discussion at nsrca.org
> > > Subject: Re: New Mintors
> > >
> > >
> > > Eric,
> > > I ran a gallon thru my two on the bench before putting them in the
> > air.  There
> > > have been several posts of people putting them up quickly and they've
> > reported
> > > success.  More power to them.  I'm sure there are different break-in
> > > procedures that work.
> > >   In my case, similar to yours, the engines seemed tight at first.  I
> > found
> > > that they ran fine at mid throttle out of the box and the range
> > extended with
> > > a little running.  Your procedure sounds like it's working, but I
> > agree it may
> > > not be for everyone.
> > >   The way I've always looked at it, break-in is a temporary condition.
> > No
> > > need to rush it.  I have a friend with a Saito 180 which took a while
> > to break
> > > in but then became a very reliable engine.  I'm not trying to
> > associate one
> > > engine with another, just pointing out that reliable engines result
> > from a
> > > variety of starting points.
> > >   Thanks for sharing your experiences.
> > > --Lance
> >
> > > > Partially broke-in my Mintor in today with help from Dave Lockhart.
> > Initially
> > > > the engine was very tight and got hot very quickly.
> > > >
> > > > I switched to two F plugs and used sport 2-c 15% with 18% oil. Still
> > tight and
> > > > hard to keep running without overheating. Finally I got a run with a
> > high idle
> > > > that did not overheat. Then Dave persuaded me to go to full throttle
> > and set
> > > it
> > > > rich. It worked much better this time. A tank later we put it in the
> > air. It
> > > ran
> > > > very rich in the air. Several landings later ... with Dave turning
> > in the
> > > needle
> > > > a click or two at a time.. we got a flight where we could lean it by
> > climbing
> > > > and cool  down by diving. Round and square loops did the job.
> > Another run on
> > > the
> > > > ground and a slightly leaner run in the air and it was almost
> > running like a
> > > > 2-c.
> > > >
> > > > The power on a 16 x 12 APC was encouraging and the idle began to be
> > more
> > > > reliable.. I know the engine was tight before I began but was
> > surprised that I
> > > > had to be so diligent with the break-in. My question to you
> > experienced
> > > > Mintor-men is. "Is this usual?" Not complaining, but without my own
> > and
> > > David's
> > > > experience a "Rookie" could struggle...
> > > >
> > > > Regards,
> > > >
> > > > Eric.
> > > >
> > > >
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