New Mintors

Jerry Budd jbudd at QNET.COM
Tue May 13 07:02:33 AKDT 2003


Hmmm.  Less oil, runs cooler.

Magnum Lite?


>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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-- 
___________
Jerry Budd
mailto:jbudd at qnet.com
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