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