X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.123] verified) by logan.com (CommuniGate Pro SMTP 5.3.9) with ESMTP id 4507883 for flyrotary@lancaironline.net; Fri, 15 Oct 2010 17:13:31 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.123; envelope-from=eanderson@carolina.rr.com Return-Path: X-Authority-Analysis: v=1.1 cv=lu/RhtYP0ChAeUxMEPBris12a71TWT5f9yvo3GNwP9w= c=1 sm=0 a=rPkcCx1H5rrOSfN0dPC7kw==:17 a=C_IRinGWAAAA:8 a=ayC55rCoAAAA:8 a=Ia-xEzejAAAA:8 a=8N2dBL2jeFdu5LjBv0EA:9 a=yMWPP8toUn1xYKlrt9AA:7 a=h_0jYAp0mmWR0ilPjmpOiFM9-vIA:4 a=QEXdDO2ut3YA:10 a=si9q_4b84H0A:10 a=EzXvWhQp4_cA:10 a=T0cbz39xjoOWf_xD:21 a=kn4omb7msN-dtT_l:21 a=TvXSZGe1QudkQ1F2lzUA:9 a=1A3qe-bBf7rJAhEsSNkA:7 a=_EXvEsnSZyERZAbQKbvGRchWXAYA:4 a=40S9avWoeWw38Yu5:21 a=cHXJkVhA2VQ-McJs:21 a=rPkcCx1H5rrOSfN0dPC7kw==:117 X-Cloudmark-Score: 0 X-Originating-IP: 174.110.167.5 Received: from [174.110.167.5] ([174.110.167.5:56687] helo=EdPC) by cdptpa-oedge02.mail.rr.com (envelope-from ) (ecelerity 2.2.3.46 r()) with ESMTP id 03/FF-14228-8D3C8BC4; Fri, 15 Oct 2010 21:12:57 +0000 Message-ID: From: "Ed Anderson" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Re: Test Date: Fri, 15 Oct 2010 17:12:40 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0070_01CB6C8C.2C95D7F0" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 This is a multi-part message in MIME format. ------=_NextPart_000_0070_01CB6C8C.2C95D7F0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable I know you will, David, but felt I had to speak up. Can never be to careful at any time with this hobby, but particularly in = the early part where you are still learning the aircraft and engine. = Sounds like you are certainly getting plenty of RPM and good manifold = pressure. I usually caution folks with adjustable props to be careful - = in that you can set the pitch to get wild rpm but insufficient thrust. =20 A gent I was acquainted with back in the late 1990s (electronic whiz - = sold modified auto ECUs for aircraft use), set his adjustable such that = he got lots of rpm, but unfortunately not enough thrust to propel him = safely out of ground effect. Crashed into a cactus because He could = never climb out of ground effect. But if you are getting 5950 at a load of 29.5 (WOT) then that tells me = you have the engine well loaded. If it were 5950 at say 20-22 inches I = would say you need to increase the bite (pitch) of the blades. However, = with that high a manifold pressure things look good to me.=20 Now if you would just put a 1000 lb fish scale in that line you have = tied to the truck, we could get some real thrust measurements {:>) Looking forward to hearing the results Ed From: hoursaway1@comcast.net=20 Sent: Friday, October 15, 2010 2:52 PM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Re: Test Thanks Ed, will do. Am getting 5950 RPM, 29.5 MAP static (tied to PU = truck) Ivo Prop three blade 68" elect. adjusted to fine pitch ( I think = I miss-spoke earlyer, another post, prop dia. of 72", our is 68", I do = have a 72" two blade, not using ). David = R. Cook RV6A Rotary. ----- Original Message ----- From: "Ed Anderson" To: "Rotary motors in aircraft" Sent: Friday, October 15, 2010 11:53:11 AM Subject: [FlyRotary] Re: Test Enough to get the old heart a pumping - I still recall it like = yesterday. Be careful on high speed taxi - always make certain you and aircraft = are ready for flight - even unintended flight. Some folks advocate NOT = doing high speed taxi test due to increased risk during that phase. I = recall one accident - where individual had not removed control locks - = because he was not going to fly, only do taxi test, well he = unintentionally lifted off - fortunately only damage to the airplane. I = know you won't do that, David, but just be prepared for flight in any = case.=20 Good luck Ed From: hoursaway1@comcast.net=20 Sent: Friday, October 15, 2010 11:31 AM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Re: Test Ok I'll say something;;; Insurance coverage for N655HC will be bound on = the 18th of this mth. so high speed taxing will get started, are running = the eng. high power w/cowel all in place testing for any cooling = problems, that starts sat. or this evening, now I need to get me up to = speed/airworthy. David R. Cook RV6A Rotary = Lansing MI. ----- Original Message ----- From: "Tracy Hallock (RR)" To: "Rotary motors in aircraft" Sent: Friday, October 15, 2010 10:12:41 AM Subject: [FlyRotary] Re: Test Yep, it's quiet, but mail is getting through. From: Dennis Havarlah=20 Sent: Friday, October 15, 2010 8:55 AM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Test Test - too Quiet ------=_NextPart_000_0070_01CB6C8C.2C95D7F0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
I know you will, David, but felt I had to speak=20 up.
 
Can never be to careful at any time with this = hobby, but=20 particularly in the early part where you are still learning the aircraft = and=20 engine.  Sounds like you are certainly getting plenty of RPM and = good=20 manifold pressure.  I usually caution folks with adjustable props = to be=20 careful - in that you can set the pitch to get wild rpm but insufficient = thrust. 
 
A gent I was acquainted with back in the late = 1990s=20 (electronic whiz - sold modified auto ECUs for aircraft use), set his = adjustable=20 such that he got lots of rpm, but unfortunately not enough thrust to = propel him=20 safely out of ground effect.  Crashed into a cactus because He = could never=20 climb out of ground effect.
 
But if you are getting 5950 at a load of 29.5 = (WOT) then=20 that tells me you have the engine well loaded.  If it were 5950 at = say=20 20-22 inches I would say you need to increase the bite (pitch) of the=20 blades.  However, with that high a manifold pressure things look = good to=20 me.
 
Now if you would just put a 1000 lb fish scale = in that=20 line you have tied to the truck, we could get some real thrust = measurements=20 {:>)
 
Looking forward to hearing the = results
 
Ed

Sent: Friday, October 15, 2010 2:52 PM
Subject: [FlyRotary] Re: Test

Thanks Ed, will=20 do.   Am getting  5950 RPM, 29.5 MAP static (tied to PU=20 truck)  Ivo Prop three blade 68" elect. adjusted to fine pitch ( I = think I=20 miss-spoke earlyer, another post, prop dia. of 72", our is 68", I do = have a 72"=20 two blade, not using=20 ).            = ;            =        =20 David R. Cook    RV6A Rotary.
----- Original Message=20 -----
From: "Ed Anderson" <eanderson@carolina.rr.com&g= t;
To:=20 "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: = Friday,=20 October 15, 2010 11:53:11 AM
Subject: [FlyRotary] Re: Test

Enough to get the old heart a pumping - I still = recall it=20 like yesterday.
 
 Be careful on high speed taxi - always = make certain=20 you and aircraft are ready for flight - even unintended flight.  = Some folks=20 advocate NOT doing high speed taxi test due to increased risk during = that=20 phase.   I recall one accident - where individual had not = removed=20 control locks - because he was not going to fly, only do taxi test, well = he  unintentionally lifted off - fortunately only damage to the=20 airplane.  I know you won't do that, David, but just be prepared = for flight=20 in any case.
 
Good luck
 
Ed
 
 

From: hoursaway1@comcast.net=20
Sent: Friday, October 15, 2010 11:31 AM
Subject: [FlyRotary] Re: Test

Ok = I'll say=20 something;;;  Insurance coverage for N655HC will be bound = on the=20 18th of this mth. so high speed taxing will get started, are running the = eng.=20 high power w/cowel all in place testing for any cooling problems, that = starts=20 sat. or this evening, now I need to get me up to=20 speed/airworthy.         &nb= sp;           &nbs= p; =20 David R. Cook  RV6A Rotary Lansing MI.
----- Original Message=20 -----
From: "Tracy Hallock (RR)" = <thallock2@austin.rr.com>
To:=20 "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: = Friday,=20 October 15, 2010 10:12:41 AM
Subject: [FlyRotary] Re: Test

Yep, it's quiet, but mail is getting=20 through.
 
 

Sent: Friday, October 15, 2010 8:55 AM
Subject: [FlyRotary] Test

Test - too Quiet
 
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