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Subject: Re: [FlyRotary] Tuning 20B
References: <list-5112876@logan.com>
From: Tracy <rwstracy@gmail.com>
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Date: Sat, 3 Sep 2011 14:01:45 -0600
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Tim,
    When below staging point, cold start doubles fuel by firing all injector=
s.

Tracy

Sent from my iPad

On Sep 3, 2011, at 11:05 AM, coastiefamily4 <coastiefamily4@gmail.com> wrote=
:

> I have just finished setting MODE 3.  I am tuning it at 6700ft here in Col=
orado Springs and I could only get 20.5 MP running at 6000 RPMs. It is runni=
ng smooth, but I think it could be smoother.  I will finish it with MODE 1. =
 I had to set the Injector flow rate at 163.
>=20
> Just finished trying to adjusted the idle setting in MODE 2 and I am still=
 having a difficult time getting the engine to smooth out at idle.  While at=
 1800 rpms with cold start off, fuel pressure at 38psi  I have to really lea=
n it out to get it to run smoothly, it is at a setting that  is too lean and=
 the engine tries to quit. The O2 reading in just one bar on the scale. Then=
 when I try to increase the mixture she get really really rough and occasion=
ally will backfire. =20
>=20
> Then when I switch back to MODE 0 and place the cold start switch on she b=
egins to purr nicely and she is very smoothly.   =20
>=20
> I am a little stumped, I know when the cold start is turned on it doubles t=
he fuel, but at idle with only the primaries firing if the cold start is tur=
ned on will it fire both the primary and secondaries or double the flow on j=
ust the primaries and not fire the secondaries?  If I new the answer to this=
 it would help diagnose the issue. =20
>=20
> I am also battling oil leaks.  I have a few of the oil pan bolts leaking, I=
 am going to have to pull then out and fill clean the oil out and then place=
 them back in with pro seal.  I tried with grey gasket maker, with no joy.  I=
 think i might have also have a leak coming from one of the bolts on the mou=
nting plate of the RD1C.  I am going to have to look into this leak a little=
 farther.  Never ending oil leaks.
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>  I can handle to leaks, at least I know where they are.
>=20
> Any suggestions with the idle tuning.
>=20
>  I think I might have to purchase the Data Logger from Tracy in order to s=
ee all the values. Luckily, I already wire for it, I just have to hook it up=
.
>=20
>=20
> Tim
>=20