From: "Stephen Izett" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] Re: which oil for the fuel
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Date: Tue, 30 Dec 2014 06:11:34 +0800
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>

Sorry Neil, Forgot yours was the Glastar.
Great news on the mixture control.
So what have you learnt / come to re the cooling formula. Intake area, =
Rad area, exit area?

Steve


> On 30 Dec 2014, at 5:03 am, Neil Unger <flyrotary@lancaironline.net> =
wrote:
>=20
> Steve,   how cutting can you get, an RV????    (Had to get that in for =
the thousands with an RV) I have a glastar sportsman. As usual much =
torment with the changes. Spent 4 months trying to find a miss at full =
power.  Long story short, was too rich at full noise.  5 seconds to fix =
and perfect ever since. Finally got Microtech to put a manual mixture =
knob in the ECU which now allows quick and minute changes at any time, =
same as Tracy's.  Interesting that Microtech used to offer the manual =
mixture trim, but never sold one so deleted it.  Must be simple to =
attach for it cost nothing for the addition. Others are now to follow =
suit to remove the wear on the underwear. Currently building another =
engine pack up with my own PSRU at 3.17 reduction.  Aim to ground test =
the PSRU on the ground for 50 hours before I put it in my plane.   =
Amazing what you do differently the second time around now that I know =
what Rad opening is required and size radiator is a big help.  Current =
set up works well but is very draggy, which is what I will change as =
much as possible second time around.  Am also narrowing in the area =
behind the prop to a more "shark point".  Looking at making an inconel =
exhaust manifold  to stand the heat better. Still getting up to 1850 =
degrees on takeoff.  Possibly is just the fact that I have EGT fitted =
which just makes me worry.  If I did not know the temp then I would not =
have to worry. My expert tells me I just have to keep advancing the =
spark until I get the coolest temp. How far before detonation??   I am =
currently on 32 degrees, but they go as far as 45 degrees in drag cars!  =
That is to fiddle with on the ground, hence my test bed setup.  IS very =
embarrassing when the noise stops in the air.  Will also fiddle with =
mufflers as well for in 50 hours I might as well be doing something =
other than burning fuel.  Best for new year.  Neil.
>=20
> -----Original Message----- From: Stephen Izett
> Sent: Monday, December 29, 2014 9:56 PM
> To: Rotary motors in aircraft
> Subject: [FlyRotary] Re: which oil for the fuel
>=20
> Thanks Neil, that makes sense.
>=20
> We're about to paint.
> So hopefully we=E2=80=99ll get a hangar soon at Serpentine and begin =
engine ground testing.
> How=E2=80=99s the RV settling in after all he changes.
>=20
> Steve
>=20
>=20
>=20
>> On 29 Dec 2014, at 5:52 pm, Neil Unger <flyrotary@lancaironline.net> =
wrote:
>>=20
>> Steve,    Yep just use the old 2 stroke oil.  I suspect that with the =
leak and only "oil", the fuel is evaporating leaving the oil to take the =
blame. Have never seen the oil separate out yet after 12 months.  Flying =
yet?? Neil.
>>=20
>> -----Original Message----- From: steve Izett
>> Sent: Monday, December 29, 2014 7:03 PM
>> To: Rotary motors in aircraft
>> Subject: [FlyRotary] which oil for the fuel
>>=20
>> Hi guys
>> I couldn=E2=80=99t gain access to the archives so thought I would =
ask.
>> What oil are you mixing with the fuel?
>> I have been using some 2 stroke oil I had for our trimmer.
>>=20
>> I found a small leak in the pickup of the aux fuel tank that appears =
to be mostly oil, not fuel!
>> Wondering if this oil is not mixing well with the fuel, or coming out =
of suspention when allowed to sit for a few weeks.
>>=20
>> Your experiences very much appreciated.
>>=20
>> Steve Izett
>>=20
>>=20
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>>=20
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>=20
>=20
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