From: "Andrew Martin" <flyrotary@lancaironline.net>
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Date: Sun, 24 Jul 2016 10:09:34 +0800
Message-ID: <CAJxaVD3KoJOC_xNAhXPKsX+g9O0JUw4SHQvr7k2eP9pmof+GyQ@mail.gmail.com>
Subject: Re: [FlyRotary] First full power testing of Renesis 4 port
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Hi Steve

What size are your injectors and fuel pressure setting? I had those symtoms
when using too small injectors, changed to 60lb deka's, no probs since.

 I used a sensor on the prop for my efis rpm.

Andrew

On Sunday, 24 July 2016, steve Izett <flyrotary@lancaironline.net> wrote:

> Hi Guys
>
> Did the first high power testing of our setup yesterday.
> Renesis 4 port EC2 RD1-C electric pitch adjustable prop on Glasair Super
> II RG
> Engine sounded good.
> On a fine pitch setting she spun out to 7200rpm.
> On a course pitch she gets just over 6000rpm.
> Our intake manifold is a modified original Renesis.
> The length is shortened, Secondaries Valve removed, but kept the Variable
> Intake Valve.
> Primary and secondary runners are different lengths now unlike the
> original setup unfortunately.
> At 6000-7000rpm opening the valve provides another 200rpm so dynamic
> charging appears to be
> working despite the primaries being shorter than the secondaries.
>
> Confession time!
> Experienced a small fire from the exhaust where I had some insulation rap=
.
> Turned out I had a very small oil leak from the sump had dropped a small
> amount of Mobile#1 on the exhaust wrap which then ignited.
> Had extinguishers at the ready so no damage done. I subsequently found
> quite a few of the sump bolts were loose (poor on my part).
> Hopefully no more leaking oil. Thankful to find the problem on the ground
> while testing!
>
> A few issues came up and I would appreciate your brains and wisdom:
> 1. RPM above 6000 the Dynon Skyview and the EM3 stop reading correctly -
> both take their tach input from Injector #1.
>    Now if it was just the Skyview units I=E2=80=99d look at the signal le=
vel. But
> the EM3 is also playing up and has me stuck pondering at present.
>    It seemed to go intermittent but and perhaps come good above 7000rpm?
>
> 2. On the course pitch, as soon as the rpm gets to 6000 and I continue to
> open the throttle, it goes from smooth to massive missing and rpm drop.
>    Any thoughts here?
>    Related to point #1 above? Don=E2=80=99t think so as on fine pitch rpm=
 doesn=E2=80=99t
> read properly but spins faster with no missing.
>    Don=E2=80=99t recall mixture when this happened.
>    I think its related to load?
>    What could cause this?
>    a. Fueling - I tried adjusting mixture but with no success. Thinking I
> need to experiment more with mixture when this massive missing occurs.
>
>  b. Spark? Coils are D585=E2=80=99s
>    c. Manifold pressure fluctuations feeding back into EC2 creating
> fueling issues?
>
> Thanks in advance for your thinking on my problems.
>
> Steve Izett
> Perth Western Australia
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:
> http://mail.lancaironline.net:81/lists/flyrotary/List.html
>


--=20
Regards
Andrew Martin
Martin Ag

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Hi Steve<div><br></div><div>What size are your injectors and fuel pressure =
setting? I had those symtoms when using too small injectors, changed to 60l=
b deka&#39;s, no probs since.</div><div><br></div><div>=C2=A0I used a senso=
r on the prop for my efis rpm.</div><div><br></div><div>Andrew<br><br>On Su=
nday, 24 July 2016, steve Izett &lt;<a href=3D"mailto:flyrotary@lancaironli=
ne.net">flyrotary@lancaironline.net</a>&gt; wrote:<br><blockquote class=3D"=
gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-=
left:1ex">Hi Guys<br>
<br>
Did the first high power testing of our setup yesterday.<br>
Renesis 4 port EC2 RD1-C electric pitch adjustable prop on Glasair Super II=
 RG<br>
Engine sounded good.<br>
On a fine pitch setting she spun out to 7200rpm.<br>
On a course pitch she gets just over 6000rpm.<br>
Our intake manifold is a modified original Renesis.<br>
The length is shortened, Secondaries Valve removed, but kept the Variable I=
ntake Valve.<br>
Primary and secondary runners are different lengths now unlike the original=
 setup unfortunately.<br>
At 6000-7000rpm opening the valve provides another 200rpm so dynamic chargi=
ng appears to be<br>
working despite the primaries being shorter than the secondaries.<br>
<br>
Confession time!<br>
Experienced a small fire from the exhaust where I had some insulation rap.<=
br>
Turned out I had a very small oil leak from the sump had dropped a small am=
ount of Mobile#1 on the exhaust wrap which then ignited.<br>
Had extinguishers at the ready so no damage done. I subsequently found quit=
e a few of the sump bolts were loose (poor on my part).<br>
Hopefully no more leaking oil. Thankful to find the problem on the ground w=
hile testing!<br>
<br>
A few issues came up and I would appreciate your brains and wisdom:<br>
1. RPM above 6000 the Dynon Skyview and the EM3 stop reading correctly - bo=
th take their tach input from Injector #1.<br>
=C2=A0 =C2=A0Now if it was just the Skyview units I=E2=80=99d look at the s=
ignal level. But the EM3 is also playing up and has me stuck pondering at p=
resent.<br>
=C2=A0 =C2=A0It seemed to go intermittent but and perhaps come good above 7=
000rpm?<br>
<br>
2. On the course pitch, as soon as the rpm gets to 6000 and I continue to o=
pen the throttle, it goes from smooth to massive missing and rpm drop.<br>
=C2=A0 =C2=A0Any thoughts here?<br>
=C2=A0 =C2=A0Related to point #1 above? Don=E2=80=99t think so as on fine p=
itch rpm doesn=E2=80=99t read properly but spins faster with no missing.<br=
>
=C2=A0 =C2=A0Don=E2=80=99t recall mixture when this happened.<br>
=C2=A0 =C2=A0I think its related to load?<br>
=C2=A0 =C2=A0What could cause this?<br>
=C2=A0 =C2=A0a. Fueling - I tried adjusting mixture but with no success. Th=
inking I need to experiment more with mixture when this massive missing occ=
urs.<br>
<br>
=C2=A0b. Spark? Coils are D585=E2=80=99s<br>
=C2=A0 =C2=A0c. Manifold pressure fluctuations feeding back into EC2 creati=
ng fueling issues?<br>
<br>
Thanks in advance for your thinking on my problems.<br>
<br>
Steve Izett<br>
Perth Western Australia<br>
--<br>
Homepage:=C2=A0 <a href=3D"http://www.flyrotary.com/" target=3D"_blank">htt=
p://www.flyrotary.com/</a><br>
Archive and UnSub:=C2=A0 =C2=A0<a href=3D"http://mail.lancaironline.net:81/=
lists/flyrotary/List.html" target=3D"_blank">http://mail.lancaironline.net:=
81/lists/flyrotary/List.html</a><br>
</blockquote></div><br><br>-- <br>Regards<br>Andrew Martin<br>Martin Ag<br>

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