X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ms-smtp-01.southeast.rr.com ([24.25.9.100] verified) by logan.com (CommuniGate Pro SMTP 5.1.1) with ESMTP id 1531372 for flyrotary@lancaironline.net; Mon, 06 Nov 2006 09:45:15 -0500 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.100; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-098-162.carolina.res.rr.com [24.74.98.162]) by ms-smtp-01.southeast.rr.com (8.13.6/8.13.6) with SMTP id kA6Eifc6025722 for ; Mon, 6 Nov 2006 09:44:43 -0500 (EST) Message-ID: <001101c701b2$242f8910$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: First flight, RV-8 N5093F Date: Mon, 6 Nov 2006 09:45:02 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000E_01C70188.3AFA2300" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2869 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2962 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_000E_01C70188.3AFA2300 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable MessageHi Gaylen, My aircraft (RV-6A) always required left rudder on take off and climbout = with the 2.17 (now requires a lot more right rudder with the 2.85 and = bigger prop) . I initially thought it required right rudder in cruise = flight to center the ball as well - then discovered that my Turn = Indicator was cocked slightly in the instrument hole - might check that = just to be certain.=20 My left wing was heavy also - after checking for flap alignment, = fairing alignment, etc, I ended up "crimping" the trailing edge of the = "light" wing which fixed the problem. Can not recall whether the RV-8 = has the same trailing edge as the RV-6 (bent). But, I agree hold off = with the trim tabs until you have checked those things. Wheel pants and = particularly leg fairings will probably increase your cruise by a = minimum of 12-15 MPH, perhaps more. The drag will hold back your speed (and engine rpm) a bit, so that would = account for some of the lower rpm. Got any photos of your induction = system? Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.dmack.net/mazda/index.html ----- Original Message -----=20 From: Gaylen Lerohl=20 To: Rotary motors in aircraft=20 Sent: Monday, November 06, 2006 9:19 AM Subject: [FlyRotary] Re: First flight, RV-8 N5093F Listers, Give me a couple of days and I'll get back with design details and = more on in-flight results. Flew two more rides yesterday, 2.4 hours = total. I need some left rudder at all speeds. I'll review "P" Factor = material, do some careful measurements and see if some of the problem = can be shimmed out. I'll hold off messing with trim tabs if there is = another way.=20 At full throttle and stabilized level flight the engine is turning = 5200 RMP at 125 Kt indicated (no wheel pants or gear leg fairings) I = have a couple of ideas to try to improve power that I'll work on as = able. I haven't done an airspeed check yet. The left wing is heavy but = can be trimmed out. I'll wait awhile before massaging the aileron = trailing edge. =20 If the ball is centered, there is no wing drop in the stall. Cooling has not been an issue either on the ground or in the air. I = had about 12 hours ground running and lots of taxi time with the tail up = and down. There haven't been any serious issues with the engine = installation (yet!) There is a pesky oil leak (or seepage depending on = how anal one is!!). My hangar mate, who teaches diesel mechanics at the = local tech school, gave me some die and a black light to locate the = leak. The big one was the stock oil dipstick allowing oil to splash = out. Solved that with three small "o" rings pushed on to the dipstick = seal. There is still oil seeping around the back (front in the auto) = cover. At some point I'll pull the engine and reseal it, but not now. Yes Rusty, 13B nearly stock; 2.17 : 1 gearbox; EC2 Controller and = Tracy's 68 X 71 Performance prop. Stock oil cooler and a slightly = modified Griffin radiator used by the dune buggy guys with a Sirocco = engine. Stand by for more! Regards, Gaylen Lerohl ----- Original Message -----=20 From: Russell Duffy=20 To: Rotary motors in aircraft=20 Sent: Saturday, November 04, 2006 19:59 Subject: [FlyRotary] Re: First flight, RV-8 N5093F First flight today. =20 Congratulations Gaylen! The temps sure sound good.=20 How about refreshing our memory with some details of your = installation. I'm guessing 13B, with the 2.17 redrive and Tracy's old = prop. What are you using for oil and water cooling? I'm also curious what your empty weight and empty CG came out to. = FWIW, mine is 1080 lbs, with an empty CG of 76.0", which is pretty nose = heavy. =20 Cheers, Rusty (first engine run today, DAR next Sat) =20 ------=_NextPart_000_000E_01C70188.3AFA2300 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Message
Hi Gaylen,
 
My aircraft (RV-6A) always required left rudder = on take=20 off and climbout with the 2.17 (now requires a lot more right rudder = with the=20 2.85 and bigger prop) .  I initially thought it required right = rudder in=20 cruise flight to center the ball as well - then discovered that my = Turn=20 Indicator was cocked slightly in the instrument hole - might check that = just to=20 be certain. 
 
   My  left wing was heavy = also -=20 after checking for flap alignment, fairing alignment, etc, I ended up = "crimping"=20 the trailing edge of the "light" wing which fixed the problem.  Can = not=20 recall whether the RV-8 has the same trailing edge as the RV-6 = (bent). =20 But, I agree hold off with the trim tabs until you have checked those=20 things.  Wheel pants and particularly leg fairings will probably = increase=20 your cruise by a minimum of 12-15 MPH, perhaps more.
 
The drag will hold back your speed (and engine = rpm) a bit,=20 so that would account for some of the lower rpm.  Got any photos of = your=20 induction system?
 
Ed
 
Ed Anderson
Rv-6A N494BW Rotary = Powered
Matthews,=20 NC
eanderson@carolina.rr.comhttp:/= /members.cox.net/rogersda/rotary/configs.htm#N494BW
http://www.dmack.net/mazda= /index.html
 
 
----- Original Message -----
From:=20 Gaylen Lerohl=20
Sent: Monday, November 06, 2006 = 9:19=20 AM
Subject: [FlyRotary] Re: First = flight,=20 RV-8 N5093F

Listers,
 
Give me a couple of days and I'll = get back with=20 design details and more on in-flight results.  Flew two more = rides=20 yesterday, 2.4 hours total.  I need some left rudder at all = speeds. =20 I'll review "P" Factor material, do some careful measurements and see = if some=20 of the problem can be shimmed out.  I'll hold off messing with = trim tabs=20 if there is another way. 
 
At full throttle and stabilized = level flight the=20 engine is turning 5200 RMP at 125 Kt indicated (no wheel pants or gear = leg=20 fairings)  I have a couple of ideas to try to improve power that = I'll=20 work on as able.  I haven't done an airspeed check yet.  The = left=20 wing is heavy but can be trimmed out.  I'll wait awhile before = massaging=20 the aileron trailing edge.  
 
If the ball is centered, there is no = wing drop=20 in the stall.
 
Cooling has not been an issue either = on the=20 ground or in the air.  I had about 12 hours ground running and = lots of=20 taxi time with the tail up and down.  There haven't been any = serious=20 issues with the engine installation (yet!)  There is a pesky oil = leak (or=20 seepage depending on how anal one is!!).  My hangar mate, who = teaches=20 diesel mechanics at the local tech school, gave me some die and a = black light=20 to locate the leak.  The big one was the stock oil dipstick = allowing oil=20 to splash out.  Solved that with three small "o" rings pushed on = to the=20 dipstick seal.  There is still oil seeping around the back (front = in the=20 auto) cover.  At some point I'll pull the engine and reseal it, = but not=20 now.
 
Yes Rusty, 13B nearly stock; 2.17 : = 1 =20 gearbox;  EC2 Controller and Tracy's 68 X 71 Performance=20 prop.   Stock oil cooler and a  slightly modified = Griffin=20 radiator used by the dune buggy guys with a Sirocco engine.  = Stand by for more!
 
Regards,
Gaylen Lerohl
 
 
 
 
----- Original Message -----
From:=20 Russell=20 Duffy
To: Rotary motors in = aircraft=20
Sent: Saturday, November 04, = 2006=20 19:59
Subject: [FlyRotary] Re: = First flight,=20 RV-8 N5093F

First = flight=20 today.   
 
Congratulations Gaylen!  The temps = sure sound=20 good.
 
How about refreshing our memory with some = details=20 of your installation.  I'm guessing 13B, with the 2.17 redrive = and=20 Tracy's old prop.  What are you using for oil and water=20 cooling?
 
I'm also curious what your empty weight=20 and empty CG came out to.  FWIW, mine is 1080 = lbs, with=20 an empty CG of 76.0", which is pretty=20 nose heavy.  
 
Cheers,
Rusty (first engine run today, DAR next=20 Sat)
 
 
 
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