X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.2 cv=L5hfeKb8 c=1 sm=1 tr=0 a=Yv0x1WTtHuCSlV9kqv536w==:117 a=NRKkXcIggJ40GIzpSW/H8Q==:17 a=x7bEGLp0ZPQA:10 a=VqmtQeTB-p0A:10 a=4_-BN3WEXhEA:10 a=v2DPQv5-lfwA:10 a=pGLkceISAAAA:8 a=Ia-xEzejAAAA:8 a=7g1VtSJxAAAA:8 a=_iwL_oQTnKL51E0H1fMA:9 a=QEXdDO2ut3YA:10 a=FMnVVNC4FTgA:10 a=Qa1je4BO31QA:10 a=gvSQh4r-fQ0A:10 a=yMhMjlubAAAA:8 a=SSmOFEACAAAA:8 a=ex4uGGqe_0SM2HBH-AsA:9 a=Oa_K494HWMee2qKM:21 a=gKO2Hq4RSVkA:10 a=UiCQ7L4-1S4A:10 a=hTZeC7Yk6K0A:10 a=frz4AuCg-hUA:10 a=T_WObCaBjb5lLww25dKY:22 a=Urk15JJjZg1Xo0ryW_k8:22 a=grOzbf7U_OpcSX4AJOnl:22 From: "Tracy Crook rwstracy@gmail.com" Received: from mail-yw0-f173.google.com ([209.85.161.173] verified) by logan.com (CommuniGate Pro SMTP 6.2.2) with ESMTPS id 10855358 for flyrotary@lancaironline.net; Mon, 19 Mar 2018 08:39:23 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.161.173; envelope-from=rwstracy@gmail.com Received: by mail-yw0-f173.google.com with SMTP id x17so11364092ywj.1 for ; Mon, 19 Mar 2018 05:39:23 -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=POUNYGCXwozBhVButJuDT5O+wUHAsNFKG0W6EmArP04=; b=pnidqVucQc4GmJAQIXDpr2h/6ic1MJMbdIzEx3cyoqrdz/M5F4YB3ZLKKEmf8ser1d no2iVqr1hcXOPyEiMmGZGPRgXser7rHhSsrCViaKxstoYusAb3ADzy2tznPmLIHOFR+6 BInGHZbJ70+og37/cAb5747fuJlrVb9pQ8DvcIsWENzqN2b1BG2XtNjFFmwEf+CNsj8V WFQ25R8lnXG0Qa/ieQQsNtj2p67/b/tlogmrdeT4ZJ9HVNNDGZL1BmkgnC00YB35nUqi La7bXbKVe+OHE23YZC4FXTp7230NSUgzW+uv5rOogmR2SJxJ7OHH9WhU/NrFHP3stnm6 12/w== 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=POUNYGCXwozBhVButJuDT5O+wUHAsNFKG0W6EmArP04=; b=VFkewrKb1JibWXJWPR9MawYEw7E2J2/kTNJV+CZvnsCD4mHUyX8UoXozBPhiz6EuLA JNVNYEIVymBZfWgBIpIxdI6wV57+KZz3FXWje/zK1VSevqJcRsEhLF8wh7C9iVEPQrPn p7iYgltKW4txAdqt0+i4zDiYqKJ94usYZrecPiJXogZ5UgyUgmsKEHs0c3tU8NXkXtL/ g4s+9eLL6yNsTBVK3L1h2TA0ja+vmdqbhnJMcEXQ1RnkrzrprEYcbNg8I5f7Umw6ENfU ud6q/9w6A5OsL04FJDB2IULLdWS/rFZl9ikCBH+xt0Ir3hUTpmpQbRRWJUToYQGlBtBo I8hQ== X-Gm-Message-State: AElRT7Hy3OZx+2FpjCKvjrnhgUte9MVSkGqxzaSKAiGqZ40mr09qq2+C nfvgDCE/DfvmyaeyUXW8lnwAe5fdvmg= X-Google-Smtp-Source: AG47ELs6TfZovemBbcmftcGOueOfl2bsKyxMQ4Vg4srAABak46QDY23ZXAFVypnxB5167Pd3EWcwFA== X-Received: by 10.129.41.146 with SMTP id p140mr6915014ywp.497.1521463145028; Mon, 19 Mar 2018 05:39:05 -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 i123sm3347576ywd.73.2018.03.19.05.39.02 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 19 Mar 2018 05:39:03 -0700 (PDT) Message-ID: <5aafaf67.81c60d0a.f02ca.ea1d@mx.google.com> MIME-Version: 1.0 To: Rotary motors in aircraft Subject: RE: [FlyRotary] Re: Glasair Testing Date: Mon, 19 Mar 2018 08:39:02 -0400 Importance: normal X-Priority: 3 In-Reply-To: References: Content-Type: multipart/alternative; boundary="_A3BCECBE-5EBB-4E05-8D09-3D88F92CC374_" --_A3BCECBE-5EBB-4E05-8D09-3D88F92CC374_ Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Good memory Steve. My RV8 inlets are round, 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 remember make. It=E2=80=99s about 10 x 11 x 2 but= with very closely spaced fins so more fin area than the similar core volum= e on the stock Mazda cooler. The inlets on the RV4 are so irregular (the right side is especially ugly := ) that area is unknown. Tracy=20 Sent from Mail for Windows 10 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 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? Thanks again Steve Izett =20 > 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= . The oil cooler was the RV-4. 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. 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 b= e higher than mine. In my experience cooling on ground had very little bea= ring on how it works in flight. =20 >>>>=20 >>>> When you are committed to first flight, don=E2=80=99t wait for full oi= l & water temps, start takeoff run as soon as min. temps reached if possib= le. I use 120 F. as min. That will give best chance to make it around th= e pattern for quick landing before overheating if cooling is not good enoug= h. I did many one circuit flights in the early days : ) >>>>=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. The EM2/3 will not give reliabl= e airspeed readings below around 20 MPH due to the limitations of the senso= r 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....= A JET POWERED CRI CRI???? Holy s**t, what will they do next! So I found t= he 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 >>>> Perth WA - Glasair Super IIRG with Renesis 4 port, RD1C, EM3, EC3 >>>>=20 >>>> >>>>=20 >>>>=20 >>>>=20 >>>>=20 >>>> -- >>>> Homepage: http://www.flyrotary.com/ >>>> Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/= List.html >>>>=20 >>>>=20 >>>> <69C652B733844F5DB5ECD4A530438876.jpg>-- >>>> Homepage: http://www.flyrotary.com/ >>>> Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/= List.html >>>>=20 >>>>=20 >>>> -- >>>> Homepage: http://www.flyrotary.com/ >>>> Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/= List.html >>>=20 >>>=20 >>> -- >>> Homepage: http://www.flyrotary.com/ >>> Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/L= ist.html >>=20 >>=20 >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/Li= st.html >=20 > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/Lis= t.html -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.= html --_A3BCECBE-5EBB-4E05-8D09-3D88F92CC374_ Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8"

Good memory Steve. =C2=A0My RV8 inle= ts are round, 6=E2=80=9D for water, 5=E2=80=9D for oil cooler.=C2=A0 Oil co= oler is a =E2=80=9C30 row cooler=E2=80=9D found on-line.=C2=A0 Can=E2=80=99= t remember make.=C2=A0 It=E2=80=99s about 10 x 11 x 2=C2=A0 but with very c= losely spaced fins so more fin area than the similar core volume on the sto= ck Mazda cooler.

 

The inlets on the RV4 are so irregular (the right side is especiall= y ugly : ) that area is unknown.

 <= /p>

Tracy

 

Sent from Mail for Windows 10

&nbs= p;

From: Stephen Izett stephen.izett@gmail.com
Sent: Sun= day, March 18, 2018 2:54 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] = Re: Glasair Testing

 

Tracy

Thats what I thought. Our ra= d should with good airflow easily cool 200hp.

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

Can you pro= vide inlet areas of the RV4 & 8?

 

Thanks again

 = ;

Steve Izett

> On 18 Mar 2018, at 9:53 am, Tracy Crook rwstracy@gm= ail.com <flyrotary@lancaironline.net> wrote:

= >

> Was thinking of the RV-4 but now that yo= u 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.

>

> Tracy

>= ;

> Sent from my iPad

&= gt;

>> On Mar 17, 2018, at 20:13, Stephen Iz= ett stephen.izett@gmail.com <flyrotary@lancaironline.net> wrote:

<= p class=3DMsoNormal>>>

>> 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

>>

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

>= >>

>>> Thanks Tracy.

>>> Much appreciated.

>>= ;>

>>> Steve

&= gt;>>> On 18 Mar 2018, at 7:48 am, Tracy Crook rwstracy@gmail.com = <flyrotary@lancaironline.net> wrote:

>>= >>

>>>> The rad is the same size= as mine so should be OK, oil cooler about the same as mine too.=C2=A0 Succ= ess depends as much on volume through them as size though.=C2=A0 I can=E2= =80=99t guess on the inlet size since your airspeed will be higher than min= e.=C2=A0 In my experience cooling on ground had very little bearing on how = it works in flight.=C2=A0

>>>>

>>>> When you are committed to first flight, = don=E2=80=99t wait for full oil & water temps,=C2=A0 start takeoff run = as soon as min. temps reached if possible.=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 l= anding before overheating if cooling is not good enough.=C2=A0 I did many o= ne circuit flights in the early days : )

>>&g= t;>

>>>> Tracy

>>>>

>>>> Sent from Ma= il for Windows 10

>>>>

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

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

>>>> To: Rotary motors in aircraft

<= p class=3DMsoNormal>>>>> Subject: [FlyRotary] Re: Glasair Testi= ng

>>>>

>&g= t;>> Hi Tracy.

>>>>

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

>>>>

>>>>

>>>> Any 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.

>>= >>

>>>> Oil Cooler - turbo rx7 1= 1x8.75x2 giving 193in3 fed by 7.4in2 inlet 12=E2=80=9D below spinner, which= gets better prop blast.

>>>>

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

>>>>

>>>>

>>>> Thanks again for your gearbox, contr= ollers and knowledge base over the years.

>>&= gt;>

>>>> 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= comments.=C2=A0 The EM2/3 will not give reliable airspeed readings below a= round 20 MPH due to the limitations of the sensor used and resolution of th= e ADC in the EM3.

>>>>

>>>> Glad to see the progress!

>>>>

>>>> Tracy

>>>>

>>>> S= ent from Mail for Windows 10

>>>>

<= p class=3DMsoNormal>>>>> From: Stephen Izett stephen.izett@gmai= l.com

>>>> Sent: Saturday, March 17, 20= 18 5:35 AM

>>>> To: Rotary motors in ai= rcraft

>>>> Subject: [FlyRotary] Re: Gl= asair Testing

>>>>

>>>> Hi guys

>>>>

=

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

>>>>

>>>> Cheers

>>>>

>>>>= Steve Izett

>>>> <69C652B733844F5DB= 5ECD4A530438876.jpg>

>>>>

>>>>

>>>> <= /p>

>>>>

>>&= gt;>

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

>>>>

= >>>> HI Todd

>>>> Thanks fo= r 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.

&g= t;>>>

>>>> Yes that Cri Cri i= s an interesting and tiny machine.

>>>>= Dawie and Sarki are great guys with heaps of experience and have been so v= ery helpful.

>>>> They bring it out eve= ry time we have an open day at our club. The crowds love it.

>>>>

>>>> On ano= ther note I=E2=80=99m very interested in the possibility of turboing the re= nesis 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<= /p>

>>>>

>>&= gt;>

>>>>

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

>>= ;>>

>>>> 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 incre= ase 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 qu= ickly when you reduce the power.

>>>> I= f everything else is performing well (fuel, electrical) then I don't see wh= y 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 opera= tion, you may find excess cooling (and drag) in the air.

>>>>

>>>> But the re= al reason I'm responding right now is not rotary related....=C2=A0 A JET PO= WERED 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!

&g= t;>>>

>>>> Todd

>>>> C-FSTB

>>>&g= t; RV9 Turbo13B

>>>>

>>>> Todd Bartrim

>>>&g= t;

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

>>>> Hi people

>>>>

>>>> Continue= d 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)

>>>>

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

>>>>

>>>> O= n the second run as I hit about 45knots I encountered very high vibration w= ith no warning. I braked and turned of the engine thinking it emanated from= the engine/prop.

>>>> After leaving th= e runway and stopping for a few moments I tried a restart, and found all pe= rfectly normal. Previously I had encountered huge missing at rpm so immedia= tely thought that was the issue.

>>>> H= aving wrongly diagnosed the phenomenon I taxied back and did another run se= eking to emulate the fault. Well this time I got up to about 47knots and al= l hell broke loose.

>>>> I was barely = able to control her, leaving the strip and into the ruff. Over the radio ca= me the call =E2=80=9Cif you continue with that front nose shimmy you will d= estroy your aircraft=E2=80=9D.

>>>> We= ll I had no interest in continuing the testing at that stage but was very t= hankful for the feedback from someone watching on. With my lack of expertis= e I had completely failed to realise what was happening.

>>>>

>>>> Back to th= e hangar and pulled the Shimmy Damper apart. Oil had gotten in at some poin= t, so cleaned it up and re torqued the assembly.

&g= t;>>>

>>>> A friend on our ai= rstrip with extensive experience in many different aircraft (he has an RV8,= Longezy, jet powered cir cri, Comanche twin) then took it out with me (dat= a not provided) and he confirmed he thought the aircraft seemed very respon= sive (shimmy Damper a little to tight now) and proceeded to lift the nose o= ff for the first time under its own power at a little over 50 knots.

>>>>

>>>>= ; 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 a= ny of you glean from the log data. (I expected a different result from the = manifold readings, so not sure what is going on there)

>>>>

>>>> Thanks

>>>>

>>>&g= t; Steve Izett

>>>> Perth WA - Glasair = Super IIRG with Renesis 4 port, RD1C, EM3, EC3

>= >>>

>>>> <Testing 16th Mar= ch 18.jpeg>

>>>>

>>>>

>>>>

>>>>

>>>> -= -

>>>> Homepage:=C2=A0 http://www.flyro= tary.com/

>>>> Archive and UnSub:=C2=A0= =C2=A0 http://mail.lancaironline.net:81/lists/flyrotary/List.html

>>>>

>>>> <= /p>

>>>> <69C652B733844F5DB5ECD4A5304388= 76.jpg>--

>>>> Homepage:=C2=A0 http:= //www.flyrotary.com/

>>>> Archive and U= nSub:=C2=A0=C2=A0 http://mail.lancaironline.net:81/lists/flyrotary/List.htm= l

>>>>

>>= ;>>

>>>> <VH-EXP.jpeg>--

>>>> Homepage:=C2=A0 http://www.flyrotar= y.com/

>>>> Archive and UnSub:=C2=A0=C2= =A0 http://mail.lancaironline.net:81/lists/flyrotary/List.html

>>>

>>>

>>> --

>>> Homepage= :=C2=A0 http://www.flyrotary.com/

>>> Arch= ive and UnSub:=C2=A0=C2=A0 http://mail.lancaironline.net:81/lists/flyrotary= /List.html

>>

>&g= t;

>> --

>> Ho= mepage:=C2=A0 http://www.flyrotary.com/

>> Ar= chive and UnSub:=C2=A0=C2=A0 http://mail.lancaironline.net:81/lists/flyrota= ry/List.html

>

> --<= /p>

> Homepage:=C2=A0 http://www.flyrotary.com/

<= p class=3DMsoNormal>> Archive and UnSub:=C2=A0=C2=A0 http://mail.lancair= online.net:81/lists/flyrotary/List.html

 =

 

--=

Homepage:=C2=A0 http://www.flyrotary.com/

Archive and UnSub:=C2=A0=C2=A0 http://mail.lancaironline.ne= t:81/lists/flyrotary/List.html

 

= --_A3BCECBE-5EBB-4E05-8D09-3D88F92CC374_--