From: "Stephen Izett stephen.izett@gmail.com" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] Re: Glasair Testing
Date: Sat, 17 Mar 2018 17:28:34 +0800
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Message-Id: <203E2665-6FEF-4008-BAF4-8E3855802E6E@gmail.com>

HI Todd
Thanks for the feedback. And yes the manifold pressure does make sense, =
I was upside down expecting a lower manifold pressure at WOT. Doh!
I=E2=80=99m colourblind and cant differentiate between some of those =
colours so was getting confused.=20

Yes that Cri Cri is an interesting and tiny machine.
Dawie and Sarki are great guys with heaps of experience and have been so =
very helpful.
They bring it out every time we have an open day at our club. The crowds =
love it.

On another note I=E2=80=99m very interested in the possibility of =
turboing the renesis in the future if all else goes well.
What turbo are you using, what level of boost do you use and what hp do =
you think this is creating?

Thanks again

Steve Izett


> On 17 Mar 2018, at 4:29 pm, Todd Bartrim bartrim@gmail.com =
<flyrotary@lancaironline.net> wrote:
>=20
> Hi Steve;
>  The manifold looks like exactly what I would expect to match your =
RPM, so no worries there. The temps don't look too bad to me. Possibly =
your oil cooling might be little low as it begins to increase rapidly =
when you add power and during an extended climb-out you may see that get =
a little hotter than you like, but it looks like it stabilizes quickly =
when you reduce the power.
>    If everything else is performing well (fuel, electrical) then I =
don't see why it's not time to see how it cools in the air. That's a =
quick plane so my guess is that if you have enough ground cooling for =
indefinate ground operation, you may find excess cooling (and drag) in =
the air.
>=20
> But the real reason I'm responding right now is not rotary related.... =
 A JET POWERED CRI CRI???? Holy s**t, what will they do next! So I found =
the YouTube video of it (VH-ZSE right?) That's pretty cool!
>=20
> Todd
> C-FSTB
> RV9 Turbo13B
>=20
> Todd Bartrim
>=20
> On Fri, Mar 16, 2018 at 6:29 PM, Stephen Izett stephen.izett@gmail.com =
<flyrotary@lancaironline.net> wrote:
> Hi people
>=20
> Continued testing the Glasair Super IIRG yesterday with an OAT of 70. =
See graph of 13 minutes of data (Note: temps in C, Speed in Knots)
>=20
> Apart from collecting data on the cooling I flooded my system with =
adrenaline.
>=20
> On the second run as I hit about 45knots I encountered very high =
vibration with no warning. I braked and turned of the engine thinking it =
emanated from the engine/prop.
> After leaving the runway and stopping for a few moments I tried a =
restart, and found all perfectly normal. Previously I had encountered =
huge missing at rpm so immediately thought that was the issue.
> Having wrongly diagnosed the phenomenon I taxied back and did another =
run seeking to emulate the fault. Well this time I got up to about =
47knots and all hell broke loose.=20
> I was barely able to control her, leaving the strip and into the ruff. =
Over the radio came the call =E2=80=9Cif you continue with that front =
nose shimmy you will destroy your aircraft=E2=80=9D.=20
> Well I had no interest in continuing the testing at that stage but was =
very thankful for the feedback from someone watching on. With my lack of =
expertise I had completely failed to realise what was happening.
>=20
> Back to the hangar and pulled the Shimmy Damper apart. Oil had gotten =
in at some point, so cleaned it up and re torqued the assembly.
>=20
> A friend on our airstrip with extensive experience in many different =
aircraft (he has an RV8, Longezy, jet powered cir cri, Comanche twin) =
then took it out with me (data not provided) and he confirmed he thought =
the aircraft seemed very responsive (shimmy Damper a little to tight =
now) and proceeded to lift the nose off for the first time under its own =
power at a little over 50 knots.
>=20
> So some big lessons for me in relation to my expertise and risk =
profiling.
> Temps still concerning but I=E2=80=99m wondering if there is enough =
capacity to attempt flight testing.
> I would appreciate any wisdom that any of you glean from the log data. =
(I expected a different result from the manifold readings, so not sure =
what is going on there)
>=20
> Thanks
>=20
> Steve Izett
> Perth WA - Glasair Super IIRG with Renesis 4 port, RD1C, EM3, EC3
>=20
> <Testing 16th March 18.jpeg>
>=20
>=20