X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ms-smtp-03.southeast.rr.com ([24.25.9.102] verified) by logan.com (CommuniGate Pro SMTP 5.1.10) with ESMTP id 2143558 for flyrotary@lancaironline.net; Wed, 27 Jun 2007 11:48:27 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.102; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-103-061.carolina.res.rr.com [24.74.103.61]) by ms-smtp-03.southeast.rr.com (8.13.6/8.13.6) with SMTP id l5RFlWFG002788 for ; Wed, 27 Jun 2007 11:47:33 -0400 (EDT) Message-ID: <006d01c7b8d2$73a11d10$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Spinning Prop was [FlyRotary] Re: Chris' Engine Saga...... Date: Wed, 27 Jun 2007 11:47:22 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_006A_01C7B8B0.EC4331D0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3028 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_006A_01C7B8B0.EC4331D0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable No question that spinning prop is the most dangerous thing on the = ground. I do not find it pleasant to be standing within a couple of = feet of a spinning prop myself.=20 I have a habit I have followed over the years, when the engine is = running and I need to approach the engine compartment, I make certain my = hip is against the leading edge of the wing as from the time I round the = wingtip and start toward the engine. I do not break contact until my = front hits the fuselage, I then step one step sideways toward the nose = and no further. I also remind my self no arm waving until I reverse = those steps and am past the wing tip once again. =20 Once you get things squared away, there is seldom any need to approach = the engine compartment with the engine running. FWIW Ed ----- Original Message -----=20 From: bmears9413@aol.com=20 To: Rotary motors in aircraft=20 Sent: Wednesday, June 27, 2007 11:09 AM Subject: [FlyRotary] Re: Chris' Engine Saga...... I understand what Chris is thinking. I dont want to get my motor setup = dialed in with a prop spinnin' around me. Wonder if there would be = another way to load the engine without a prop while tuning? maybe like a = temporary generator or alternator under a hard load? Anybody got any = ideas? Bob Mears Supermarine Spitfire -----Original Message----- From: thomas walter To: Rotary motors in aircraft Sent: Wed, 27 Jun 2007 10:00 am Subject: [FlyRotary] Re: Chris' Engine Saga...... Chris, Trying to get the engine running, or setting parameters, without a = prop is just too darn frustrating! With a heavy flywheel it will help absorp the rpm impulses to "smooth" = things out. With the light weight automatic flexplate, rpm will bounce = all over the place and confuse things. With a heavy flywheel that "600 = rpm" is really 580 to 620 rpm. With the flex plate, who knows!=20 I worked with the folks at Conti doing an early ISAD (integrated = starter alternator dampener) function. Basically remove the flywheel and = put in a large poly phase motor. Trick was on expansion stroke to absorb = energy, on compression is would add energy. This was the dampening = function. Cool part was on the small diesel you turn ISAD off and = 'rattle rattle rattle' was heard, flip the switch and engine was smooth = as glass! Huge difference in noise in the vehicle. Pull up to a stop = light and kill the engine. The red light in Germany has a sweep hand so = you know "when to start your engine". With the engine warmed up, push = in the clutch and it was 0 to 700 rpm in 200mS. :) Best one... pulled up along a BMW. Our diesel Ford making a racket. = Killed the engine at the red light. Light turned green and we 'jack = rabbited' away as the 70kw diesel had a 50kw electric power added. BMW = owner was going to get at the next light... repeated it. Really confused = that poor BMW driver. :) Tom -------------------------------------------------------------------------= ----- Luggage? GPS? Comic books?=20 Check out fitting gifts for grads at Yahoo! Search.=20 -------------------------------------------------------------------------= ----- AOL now offers free email to everyone. Find out more about what's free = from AOL at AOL.com. ------=_NextPart_000_006A_01C7B8B0.EC4331D0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
No question that spinning prop is the most = dangerous thing=20 on the ground.  I do not find it pleasant to be standing within a = couple of=20 feet of a spinning prop myself. 
 
 I have a habit I have followed over the = years, when=20 the engine is running and I need to approach the engine compartment, I = make=20 certain my hip is against the leading edge of the wing as from the time = I round=20 the wingtip and start toward the engine.   I do not break = contact=20 until my front hits the fuselage, I then step one step sideways toward = the nose=20 and no further.  I also remind my self no arm waving until I = reverse those=20 steps and am past the wing tip once again. 
 
Once you get things squared away, there is = seldom any need=20 to approach the engine compartment with the engine running.
 
FWIW
 
Ed
 
 
----- Original Message -----
From:=20 bmears9413@aol.com
Sent: Wednesday, June 27, 2007 = 11:09=20 AM
Subject: [FlyRotary] Re: Chris' = Engine=20 Saga......

I understand what Chris is thinking. I dont want to get = my=20 motor setup dialed in with a prop spinnin' around me. Wonder if there = would be=20 another way to load the engine without a prop while tuning? maybe like = a=20 temporary generator or alternator under a hard load? Anybody got any=20 ideas?

Bob Mears
Supermarine = Spitfire


-----Original=20 Message-----
From: thomas walter = <roundrocktom@yahoo.com>
To:=20 Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: = Wed, 27=20 Jun 2007 10:00 am
Subject: [FlyRotary] Re: Chris' Engine = Saga......

Chris,
 
Trying to get the engine running, or setting parameters, = without  a=20 prop is just too darn frustrating!
 
With a heavy flywheel it will help absorp the rpm impulses to = "smooth"=20 things out. With the light weight automatic flexplate, rpm will bounce = all=20 over the place and confuse things.   With a heavy flywheel = that "600=20 rpm" is really 580 to 620 rpm. With the flex plate, who knows!
 
I worked with the folks at Conti doing an early ISAD (integrated = starter=20 alternator dampener) function. Basically remove the flywheel and put = in a=20 large poly phase motor. Trick was on expansion stroke to absorb = energy, on=20 compression is would add energy. This was the dampening = function.  Cool=20 part was on the small diesel you turn ISAD off and 'rattle rattle = rattle'=20 was heard, flip the switch and engine was smooth as glass!   = Huge=20 difference in noise in the vehicle.  Pull up to a stop light and = kill the=20 engine. The red light in Germany has a sweep hand so you know "when to = start=20 your engine".  With the engine warmed up, push in the clutch and = it was 0=20 to 700 rpm in 200mS.  :)
 
Best one... pulled up along a BMW. Our diesel Ford making a = racket.=20 Killed the engine at the red light. Light turned green and we 'jack = rabbited'=20 away as the 70kw diesel had a 50kw electric power added. BMW owner was = going=20 to get at the next light... repeated it. Really confused that poor BMW = driver.=20 :)
 
Tom
 
 
Luggage? GPS? Comic books?
Check out fitting gifts for grads at Yahoo! Search.
AOL now offers free email to everyone. Find out more about what's free = from=20 AOL at AOL.com.
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