New Mintors

[Tom Buyrc]

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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