From: "Todd Bartrim" <flyrotary@lancaironline.net>
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Date: Mon, 21 Aug 2017 12:21:52 -0700
Message-ID: <CALYfWButsnd3M1yhdihcjvdYCE9HHmu_yqixrRJys9gmaKOJoQ@mail.gmail.com>
Subject: taxi testing at home video
To: FlyRotary <flyrotary@lancaironline.net>
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I made a video yesterday of a little constricted taxi testing in my
driveway. I thought I'd share for fun and maybe a little inspiration for
those that are still building.
  The EC2 has been reset to original programming (from Tracy's RV4 Otter, I
believe) with no tuning whatsoever, so this is how it started and ran under
those settings. It's pretty rich so didn't idle well so that's why I'm
running a higher rpm at the start. The only adjustments made in this video
is with the mixture control.
  Towards the end of the video the idle is pretty rough until I got it
smoothed out by leaning the mixture. I'm guessing the knocking that is
heard during this rough running is from the PSRU not being happy with the
torque reversals. This noise is not really all that noticeable from inside
the cockpit but from the camera it is quite obvious and does not sound
healthy at all.
   Knowing this, I will get this tuned today, so as to avoid any further
running in this condition so to eliminate this stress on the psru.

https://goo.gl/photos/r4T5DaMX11FbBd6g8

Comments welcome!

Todd Bartrim

Ps.   Forest fire smoke is quite heavy here today but on the days the north
wind clears it away, I have the Lockheed Electra waterbombers flying
directly over my house when taking off heavily loaded. There are currently
4 of them based here and depending on where they are going and how long the
turn-around time is, there is one as often as every 5-10 minutes. While
this increased activity is preventing me from moving my plane up to the
airport where I have more room to taxi test, it has also provided me with
some entertainment. When loaded heavy, those 4 big props beat the air
pretty loudly.
A couple of pics here. The fire retardant stains are quite visible on the
belly.
https://goo.gl/photos/6QP4PYr4sXXkTh6S7
https://goo.gl/photos/bcDMY3Kcsc1yZzuc6

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<div dir=3D"ltr"><div>I made a video yesterday of a little constricted taxi=
 testing in my driveway. I thought I&#39;d share for fun and maybe a little=
 inspiration for those that are still building.=C2=A0</div><div>=C2=A0 The =
EC2 has been reset to original programming (from Tracy&#39;s RV4 Otter, I b=
elieve) with no tuning whatsoever, so this is how it started and ran under =
those settings. It&#39;s pretty rich so didn&#39;t idle well so that&#39;s =
why I&#39;m running a higher rpm at the start. The only adjustments made in=
 this video is with the mixture control.=C2=A0</div><div>=C2=A0 Towards the=
 end of the video the idle is pretty rough until I got it smoothed out by l=
eaning the mixture. I&#39;m guessing the knocking that is heard during this=
 rough running is from the PSRU not being happy with the torque reversals. =
This noise is not really all that noticeable from inside the cockpit but fr=
om the camera it is quite obvious and does not sound healthy at all.=C2=A0<=
/div><div>=C2=A0 =C2=A0Knowing this, I will get this tuned today, so as to =
avoid any further running in this condition so to eliminate this stress on =
the psru.<br><br></div><div><a href=3D"https://goo.gl/photos/r4T5DaMX11FbBd=
6g8">https://goo.gl/photos/r4T5DaMX11FbBd6g8</a><br></div><div><br></div><d=
iv>Comments welcome!</div><br clear=3D"all"><div><div class=3D"gmail_signat=
ure"><div dir=3D"ltr">Todd Bartrim</div><div dir=3D"ltr"><br></div><div>Ps.=
 =C2=A0 Forest fire smoke is quite heavy here today but on the days the nor=
th wind clears it away, I have the Lockheed Electra waterbombers flying dir=
ectly over my house when taking off heavily loaded. There are currently 4 o=
f them based here and depending on where they are going and how long the tu=
rn-around time is, there is one as often as every 5-10 minutes. While this =
increased activity is preventing me from moving my plane up to the airport =
where I have more room to taxi test, it has also provided me with some ente=
rtainment. When loaded heavy, those 4 big props beat the air pretty loudly.=
=C2=A0</div><div>A couple of pics here. The fire retardant stains are quite=
 visible on the belly.</div><div><a href=3D"https://goo.gl/photos/6QP4PYr4s=
XXkTh6S7">https://goo.gl/photos/6QP4PYr4sXXkTh6S7</a><br></div><div><a href=
=3D"https://goo.gl/photos/bcDMY3Kcsc1yZzuc6">https://goo.gl/photos/bcDMY3Kc=
sc1yZzuc6</a><br></div></div></div>
</div>

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