X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.2 cv=L5hfeKb8 c=1 sm=1 tr=0 a=hFJn2eZfe1ssluuUZHGoGQ==:117 a=NRKkXcIggJ40GIzpSW/H8Q==:17 a=x7bEGLp0ZPQA:10 a=VqmtQeTB-p0A:10 a=4_-BN3WEXhEA:10 a=v2DPQv5-lfwA:10 a=pGLkceISAAAA:8 a=HU2KUbKZAAAA:8 a=pjdaNNIBAAAA:8 a=Ia-xEzejAAAA:8 a=_6GpL_ENAAAA:8 a=ex4uGGqe_0SM2HBH-AsA:9 a=QEXdDO2ut3YA:10 a=vgh6Y36NTpwA:10 a=FMnVVNC4FTgA:10 a=yMhMjlubAAAA:8 a=SSmOFEACAAAA:8 a=HYUGE9p3-rRa4lAL:21 a=gKO2Hq4RSVkA:10 a=UiCQ7L4-1S4A:10 a=hTZeC7Yk6K0A:10 a=frz4AuCg-hUA:10 a=4QBvbd7gTA-4rufZgYj_:22 a=T_WObCaBjb5lLww25dKY:22 a=4lT9Q-zyc7QnGRMTZYHH:22 a=Urk15JJjZg1Xo0ryW_k8:22 From: "Tracy Crook rwstracy@gmail.com" Received: from mail-yb0-f169.google.com ([209.85.213.169] verified) by logan.com (CommuniGate Pro SMTP 6.2.2) with ESMTPS id 10866757 for flyrotary@lancaironline.net; Thu, 22 Mar 2018 11:08:14 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.213.169; envelope-from=rwstracy@gmail.com Received: by mail-yb0-f169.google.com with SMTP id i13-v6so3032677ybl.9 for ; Thu, 22 Mar 2018 08:08:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=message-id:mime-version:to:from:subject:date:importance:in-reply-to :references; bh=J2wZKeeVuPOqI5KhrCE5Rwwb74fSkMG/4AM/ug0A79g=; b=YGwGnA4AG8m9OCpTUuQBPhkMI6GVjzHbBS0JeUC9oeFhqHX6v5IS2VJVPe42hNOOrn 0VJ5bz3W8Yff6VyIYKHiIXdYU7lVk2Q9eeYUrgZc2LKVuiVSX8K3L8XlRQxJ/cRw95tk XaEMCHQc50svyrARAHd/QYMCQbBufGuOktNDtnfYXgOz5qwHXzd6y2kJ2s6ACrWCa+bI bOxBySFlkTV1sk5HjFC67kAjG1zgbUN5Ha0+RrC6lmOzc45aimXXE2mlds2uKzX1cxq9 OTjSn1+oVG1FcPmEmIQTeq5vMSmagmYGfUVBoAxyaYMdNXSjHWl39cOclIkT6j9rKtB3 DwOg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:mime-version:to:from:subject:date :importance:in-reply-to:references; bh=J2wZKeeVuPOqI5KhrCE5Rwwb74fSkMG/4AM/ug0A79g=; b=gTzsUwdhuZLUxW4nBQrkwugh/6Jp5HiHuog7IUbtGFJte9XtDKpw/Yk4xIgj86lhmD fGL/3ORPHl3t5mx0KIkbkhEmu4NsdhEq2m6hx0H/53vLdqfBqwHHwl8MaKqfd5R5Y/1s iwOPFl1A0ZhaaxtpWEymsRRyjOwm8/m0WnblOragHNGXqQ3VXAtO0LMPm3XDjik7FkT7 YqVRw6wqvaVTDKflkVt18ccLsPBdCPg8CwKYevw8SGy+aJZIOUoSXG9KV70UADbhxfKL CUS7/9LZw72iVS7YutNjnseUoXNNagAlXxh87fGKFR2dNJasLsDRrGUSyCtS0TmdpmjF 3L/w== X-Gm-Message-State: AElRT7FTa/+mgg8H0Vq1rB/+WBm5vkMBHag8Kr7a7xtgQp16DWsFMDIF D4mVIuoF1rW4SX0YhW/+U4eXpDtR X-Google-Smtp-Source: AG47ELsLcD4L/KYGfuRJXB8unS7YBvdVJKDEkYez64NZnqdc0L0D6OzkQKiu2LJ28v0yOvbnRC/HcQ== X-Received: by 2002:a25:80d1:: with SMTP id c17-v6mr14825631ybm.327.1521731277471; Thu, 22 Mar 2018 08:07:57 -0700 (PDT) Return-Path: Received: from ?IPv6:::ffff:192.168.254.69? (h156.33.187.173.dynamic.ip.windstream.net. [173.187.33.156]) by smtp.gmail.com with ESMTPSA id v143sm1558921ywc.34.2018.03.22.08.07.54 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 22 Mar 2018 08:07:55 -0700 (PDT) Message-ID: <5ab3c6cb.957a810a.4ae3b.7a7c@mx.google.com> MIME-Version: 1.0 To: Rotary motors in aircraft Subject: RE: [FlyRotary] Re: Glasair Testing Date: Thu, 22 Mar 2018 11:07:53 -0400 Importance: normal X-Priority: 3 In-Reply-To: References: Content-Type: multipart/alternative; boundary="_51E43322-2E77-4DF9-8861-6A1A0A3515EC_" --_51E43322-2E77-4DF9-8861-6A1A0A3515EC_ Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Yep, That=E2=80=99s the one (with 30 rows). Tracy Sent from Mail for Windows 10 From: Charlie England ceengland7@gmail.com Sent: Monday, March 19, 2018 9:34 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Glasair Testing Hit send too soon. CX Racing has multiple sizes on their web site. https://www.cxracing.com/oil-cooler-kit/oil-cooler-kit-oil-cooler On 3/19/2018 8:29 AM, Charlie England ceengland7@gmail.com wrote: Is this it? https://www.ebay.com/itm/CXRacing-Hi-Performance-Transmission-Engine-Univer= sal-Aluminum-Oil-Cooler-30-Row/160578859562?epid=3D657213596&hash=3Ditem256= 33ef22a:g:IucAAOxy63FSwRSv Charlie On 3/19/2018 7:39 AM, Tracy Crook rwstracy@gmail.com wrote: Good memory Steve. =C2=A0My RV8 inlets are round, 6=E2=80=9D for water, 5= =E2=80=9D for oil cooler.=C2=A0 Oil cooler is a =E2=80=9C30 row cooler=E2= =80=9D found on-line.=C2=A0 Can=E2=80=99t remember make.=C2=A0 It=E2=80=99s= about 10 x 11 x 2=C2=A0 but with very closely spaced fins so more fin area= than the similar core volume on the stock Mazda cooler. =C2=A0 The inlets on the RV4 are so irregular (the right side is especially ugly := ) that area is unknown. =C2=A0 Tracy=20 =C2=A0 Sent from Mail for Windows 10 =C2=A0 From: Stephen Izett stephen.izett@gmail.com Sent: Sunday, March 18, 2018 2:54 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Glasair Testing =C2=A0 Tracy Thats what I thought. Our rad should with good airflow easily cool 200hp. I thought I remembered the Otter with a standard mazda oil cooler and the R= V8 20b with a bigger aftermarket oil cooler. Can you provide inlet areas of the RV4 & 8? =C2=A0 Thanks again =C2=A0 Steve Izett > On 18 Mar 2018, at 9:53 am, Tracy Crook rwstracy@gmail.com wrote: >=20 > Was thinking of the RV-4 but now that you ask, the rad size was from RV-8= .=C2=A0 The oil cooler was the RV-4.=C2=A0 I used two 10 x 9 x 4 evaporator= cores for rad on the 4. >=20 > Tracy >=20 > Sent from my iPad >=20 >> On Mar 17, 2018, at 20:13, Stephen Izett stephen.izett@gmail.com wrote: >>=20 >> Tracy >> When you say the rad and oil cooler are the same size as yours, were you= referring to the RV 4 or 8? >> Steve >>=20 >>> On 18 Mar 2018, at 8:08 am, Stephen Izett stephen.izett@gmail.com wrote: >>>=20 >>> Thanks Tracy.=20 >>> Much appreciated. >>>=20 >>> Steve >>>> On 18 Mar 2018, at 7:48 am, Tracy Crook rwstracy@gmail.com wrote: >>>>=20 >>>> The rad is the same size as mine so should be OK, oil cooler about the= same as mine too.=C2=A0 Success depends as much on volume through them as = size though.=C2=A0 I can=E2=80=99t guess on the inlet size since your airsp= eed will be higher than mine.=C2=A0 In my experience cooling on ground had = very little bearing on how it works in flight.=C2=A0=20 >>>>=20 >>>> When you are committed to first flight, don=E2=80=99t wait for full oi= l & water temps,=C2=A0 start takeoff run as soon as min. temps reached if p= ossible.=C2=A0=C2=A0 I use 120 F. as min.=C2=A0 That will give best chance = to make it around the pattern for quick landing before overheating if cooli= ng is not good enough.=C2=A0 I did many one circuit flights in the early da= ys : ) >>>>=20 >>>> Tracy >>>>=20 >>>> Sent from Mail for Windows 10 >>>>=20 >>>> From: Stephen Izett stephen.izett@gmail.com >>>> Sent: Saturday, March 17, 2018 7:13 PM >>>> To: Rotary motors in aircraft >>>> Subject: [FlyRotary] Re: Glasair Testing >>>>=20 >>>> Hi Tracy.=20 >>>>=20 >>>> When you said you agree with Todd, was this in relation to the oil coo= ler appearing to be on the small side? >>>>=20 >>>>=20 >>>> Any other observation re temps etc?=20 >>>>=20 >>>> Water Cooler - 13x17.7x2.35 giving 541in3 fed by 20in2 right cheek whi= ch gets very little air from the prop. >>>>=20 >>>> Oil Cooler - turbo rx7 11x8.75x2 giving 193in3 fed by 7.4in2 inlet 12= =E2=80=9D below spinner, which gets better prop blast. >>>>=20 >>>> See photo for inlets (left cheek feeds air filter and cooling of coils= only. Right cheek is mirror image) >>>>=20 >>>>=20 >>>> Thanks again for your gearbox, controllers and knowledge base over the= years. >>>>=20 >>>> Very much appreciated. >>>>=20 >>>>=20 >>>> Steve Izett >>>>=20 >>>>=20 >>>> On 18 Mar 2018, at 4:03 am, Tracy Crook rwstracy@gmail.com wrote: >>>>=20 >>>> Hi Steve, >>>> I agree with Todd=E2=80=99s comments.=C2=A0 The EM2/3 will not give re= liable airspeed readings below around 20 MPH due to the limitations of the = sensor used and resolution of the ADC in the EM3. >>>>=20 >>>> Glad to see the progress! >>>>=20 >>>> Tracy >>>>=20 >>>> Sent from Mail for Windows 10 >>>>=20 >>>> From: Stephen Izett stephen.izett@gmail.com >>>> Sent: Saturday, March 17, 2018 5:35 AM >>>> To: Rotary motors in aircraft >>>> Subject: [FlyRotary] Re: Glasair Testing >>>>=20 >>>> Hi guys >>>>=20 >>>> I repotted the graph using gps ground speed (there was no breeze that = day) as it shows the lower speed taxing where the airspeed indicator doesn= =E2=80=99t down low. >>>>=20 >>>> Cheers >>>>=20 >>>> Steve Izett >>>> <69C652B733844F5DB5ECD4A530438876.jpg> >>>>=20 >>>>=20 >>>>=20 >>>>=20 >>>>=20 >>>> On 17 Mar 2018, at 5:28 pm, Stephen Izett stephen.izett@gmail.com wrote: >>>>=20 >>>> 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 c= olours so was getting confused.=20 >>>>=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 crow= ds love it. >>>>=20 >>>> On another note I=E2=80=99m very interested in the possibility of turb= oing 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 d= o you think this is creating? >>>>=20 >>>> Thanks again >>>>=20 >>>> Steve Izett >>>>=20 >>>>=20 >>>>=20 >>>> On 17 Mar 2018, at 4:29 pm, Todd Bartrim bartrim@gmail.com 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....= =C2=A0 A JET POWERED CRI CRI???? Holy s**t, what will they do next! So I fo= und 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= 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 adr= enaline. >>>>=20 >>>> On the second run as I hit about 45knots I encountered very high vibra= tion with no warning. I braked and turned of the engine thinking it emanate= d from the engine/prop. >>>> After leaving the runway and stopping for a few moments I tried a rest= art, and found all perfectly normal. Previously I had encountered huge miss= ing 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 e= xpertise 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 a= ircraft (he has an RV8, Longezy, jet powered cir cri, Comanche twin) then t= ook it out with me (data not provided) and he confirmed he thought the airc= raft seemed very responsive (shimmy Damper a little to tight now) and proce= eded to lift the nose off for the first time under its own power at a littl= e over 50 knots. >>>>=20 >>>> So some big lessons for me in relation to my expertise and risk profil= ing. >>>> Temps still concerning but I=E2=80=99m wondering if there is enough ca= pacity 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 wha= t is going on there) >>>>=20 >>>> Thanks >>>>=20 >>>> Steve Izett =0DVirus-free. www.avast.com =0D --_51E43322-2E77-4DF9-8861-6A1A0A3515EC_ Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8"

Yep,=C2=A0 That=E2=80=99s the one (w= ith 30 rows).

 

Tracy

 

Sent from Ma= il for Windows 10

 

From: Charli= e England ceengland7@gmail.com
Sent: Monday, March 19, 2018 9= :34 AM
To: Rotary = motors in aircraft
Subject: [FlyRotary] Re: Glasair Testing

 

Hit send too soon. CX Racing has multiple sizes on = their web site.
https://www.cxracing.com/oil-cooler-kit/oil-cooler-ki= t-oil-cooler


On 3/19/2018 8:29 AM, Charlie England ceengland7@gmail.com wrote:=




On 3/19/2018 7:39 AM, Tracy Crook rwstracy@gmail.com wrote:

Good memory Steve.  My RV8 inlets are ro= und, 6=E2=80=9D for water, 5=E2=80=9D for oil cooler.  Oil cooler is a= =E2=80=9C30 row cooler=E2=80=9D found on-line.  Can=E2=80=99t remembe= r make.  It=E2=80=99s about 10 x 11 x 2  but with very closely sp= aced fins so more fin area than the similar core volume on the stock Mazda = cooler.

 

The inlets on the RV4 are so irregular (the right side is especially u= gly : ) that area is unknown.

 

<= span style=3D'color:black'>Tracy

 

Sent from Mail for Windows 10

 

<= div style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0= in 0in'>

From: Stephen Izett stephen.izett@gmail.com
Sent: Sunday, March 1= 8, 2018 2:54 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Glasair = Testing

 

Tracy

Thats what I thought. Our rad should with good airflow easily c= ool 200hp.

I thought I remembered the Otter with a standard mazda oil cooler and= the RV8 20b with a bigger aftermarket oil cooler.

Can you provide inlet areas o= f the RV4 & 8?

 

Thanks again

 

<= span style=3D'color:black'>Steve Izett

> On 18 Mar 2018, at 9:53 am, Tracy Cr= ook rwstracy@gmail.com <flyrotary@lancaironline.net> wrote:

>

> Was thinking of the RV-4 but now that you ask, the rad size was f= rom RV-8.  The oil cooler was the RV-4.  I used two 10 x 9 x 4 ev= aporator cores for rad on the 4.

= >

> Tracy

>

> Sent from my iPad

>

>> On Mar 17, = 2018, at 20:13, Stephen Izett st= ephen.izett@gmail.com &l= t;flyrotary@lancaironline.net> wrote:

>>

>> Tracy

>> When you s= ay the rad and oil cooler are the same size as yours, were you referring to= the RV 4 or 8?

>> Steve

>>

>>> On 18 Mar 2018, at 8:08 am, Stephen = Izett stephen.izett@gmail.com <flyrotary@lancaironlin= e.net> wrote:

>>>

>>> Thanks Tracy.

=

>>> Much apprecia= ted.

= >>>

>>> Steve

>>>> On 18 Mar 2018, at 7:48 am, Tracy C= rook rwstracy@gmail.com <flyrotary@lancaironline.net>= wrote:

>>>>

>>>> The rad is the same size as mine so sh= ould be OK, oil cooler about the same as mine too.  Success depends as= much on volume through them as size though.  I can=E2=80=99t guess on= the inlet size since your airspeed will be higher than mine.  In my e= xperience cooling on ground had very little bearing on how it works in flig= ht. 

>>>>

>>>> When you are committed to first flight,= don=E2=80=99t wait for full oil & water temps,  start takeoff run= as soon as min. temps reached if possible.   I use 120 F. as min= .  That will give best chance to make it around the pattern for quick = landing before overheating if cooling is not good enough.  I did many = one circuit flights in the early days : )

>>>>

>>>> Tracy

>>= ;>>

>>>> Sent from Mail for Windows 10

<= p class=3DMsoNormal>>>>>

>>>&g= t; From: Stephen Izett stephen.i= zett@gmail.com

>>>> Sent: Saturday, March 17, 2018 7:13 PM<= /o:p>

>>&g= t;> To: Rotary motors in aircraft

>>>> Subject: [FlyRotary] Re: G= lasair Testing

>>>>

>>>> Hi Tracy.

>>>> <= /span>

>>>>= When you said you agree with Todd, was this in relation to the oil cooler = appearing to be on the small side?

>>>>

>>>>

>>>> An= y other observation re temps etc?

>>>>

>>>> Water Cooler - = 13x17.7x2.35 giving 541in3 fed by 20in2 right cheek which gets very little = air from the prop.

>>>>

<= span style=3D'color:black'>>>>> Oil Cooler - turbo rx7 11x8.75x= 2 giving 193in3 fed by 7.4in2 inlet 12=E2=80=9D below spinner, which gets b= etter prop blast.

>>>>

>>>> See photo for inlets (left cheek= feeds air filter and cooling of coils only. Right cheek is mirror image)

>&g= t;>>

>>>>

>>>> Thanks again for your gearbox, control= lers and knowledge base over the years.

>>>>

<= p class=3DMsoNormal>>>>> Very much = appreciated.

>>>>

>>>>

>>>> Steve Izett

>>>> =

>= >>>

>>>> On 18 Mar 2018, at 4:03 am, Tracy Crook rwstracy@gmail.com <flyrotary@lancaironline.net> wrote:

>>= ;>>

>>>> Hi Steve,

= >>>> I agree with Todd=E2=80=99s co= mments.  The EM2/3 will not give reliable airspeed readings below arou= nd 20 MPH due to the limitations of the sensor used and resolution of the A= DC in the EM3.

>>>>

>>>> Glad to see the progress!

>>>&g= t;

&= gt;>>> Tracy

>>>>

>>>> Sent from Mail for Windows 1= 0

>= ;>>>

>>>> From: Stephen Izett stephen.izett@gmail.com

>>>> Sent: Saturday, Marc= h 17, 2018 5:35 AM

>>>> To: Rotary motors in aircraft

>>>> Su= bject: [FlyRotary] Re: Glasair Testing

>>>>

>>>> Hi guys

>>= >>

>>>> I repotted the graph using gps ground speed (there wa= s no breeze that day) as it shows the lower speed taxing where the airspeed= indicator doesn=E2=80=99t down low.

>>>>

>>>> Cheers

>>>= ;>

>>>> Steve Izett

>>>> <69C652B733844F5DB5ECD4A53043= 8876.jpg>

>>>>

>>>>

>>>>

>>>> =

>>>>= ;

&g= t;>>> On 17 Mar 2018, at 5:28 pm, Stephen Izett stephen.izett@gmail.com <flyrotary@lancaironline.net> wrote:

>>= >>

>>>> 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. =

>>&= gt;>

>>>> Yes that Cri Cri is an interesting and tiny machine.

>&g= t;>> 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 anoth= er note I=E2=80=99m very interested in the possibility of turboing the rene= sis in the future if all else goes well.

>>>> What turbo are you usi= ng, what level of boost do you use and what hp do you think this is creatin= g?

&g= t;>>>

>>>> Thanks again

>>>>

=

>>>> Steve Ize= tt

&g= t;>>>

>>>>

>>>>

>>>> On 17 Mar 2018, at 4:= 29 pm, Todd Bartrim bartrim@gmail.com<= /a> <flyrotary@lancaironl= ine.net> wrote:

>>>>

>>>> Hi Steve;=

>>>> The m= anifold looks like exactly what I would expect to match your RPM, so no wor= ries there. The temps don't look too bad to me. Possibly your oil cooling m= ight 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 d= on't see why it's not time to see how it cools in the air. That's a quick p= lane so my guess is that if you have enough ground cooling for indefinate g= round operation, you may find excess cooling (and drag) in the air.

>>>= >

>>>> But the real reason I'm responding right now is not rotar= y 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= !

>= ;>>>

>>>> Todd

<= span style=3D'color:black'>>>>> C-FSTB

>>>> RV9 Turbo13B=

>= >>>

>>>> Todd Bartrim

>>>>

>>>> On Fri, Mar= 16, 2018 at 6:29 PM, Stephen Izett stephen.izett@gmail.com<flyrotary@lancaironline.net> wrote:

>>>> Hi people

>>= >>

>>>> Continued testing the Glasair Super IIRG yesterday wi= th an OAT of 70. See graph of 13 minutes of data (Note: temps in C, Speed i= n Knots)

>>>>

>>>> Apart from collecting data on the cooling= I flooded my system with adrenaline.

>>>>

>>>> On the secon= d run as I hit about 45knots I encountered very high vibration with no warn= ing. 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 encount= ered 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.

>>>> I was barely able to control her, le= aving 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.

>>>> Well I had no interest in continuing the testing at th= at stage but was very thankful for the feedback from someone watching on. W= ith my lack of expertise I had completely failed to realise what was happen= ing.

= >>>>

>>>> Back to the hangar and pulled the Shimmy Damp= er apart. Oil had gotten in at some point, so cleaned it up and re torqued = the assembly.

>>>>

>>>> A friend on our airstrip with extens= ive experience in many different aircraft (he has an RV8, Longezy, jet powe= red cir cri, Comanche twin) then took it out with me (data not provided) an= d he confirmed he thought the aircraft seemed very responsive (shimmy Dampe= r a little to tight now) and proceeded to lift the nose off for the first t= ime under its own power at a little over 50 knots.

>>>> <= /span>

>>>>= 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 e= nough capacity to attempt flight testing.

>>>> I would appreciate an= y wisdom that any of you glean from the log data. (I expected a different r= esult from the manifold readings, so not sure what is going on there)<= /o:p>

>>&g= t;>

>>>> Thanks

>>>>

>>>> Steve Izett<= /span>

 

<= o:p> 

<= p class=3DMsoNormal> 

3D"https://ip=

Virus-fr= ee. www.avast= .com

=

 

 =

= --_51E43322-2E77-4DF9-8861-6A1A0A3515EC_--