Return-Path: <13brv3@bellsouth.net> Received: from imf25aec.mail.bellsouth.net ([205.152.59.73] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 3082756 for flyrotary@lancaironline.net; Wed, 17 Mar 2004 09:25:57 -0500 Received: from rad ([68.221.170.60]) by imf25aec.mail.bellsouth.net (InterMail vM.5.01.06.08 201-253-122-130-108-20031117) with ESMTP id <20040317142552.IMJL17649.imf25aec.mail.bellsouth.net@rad> for ; Wed, 17 Mar 2004 09:25:52 -0500 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] mainfold hose Date: Wed, 17 Mar 2004 08:23:53 -0600 Message-ID: <007b01c40c2b$79ed5320$6001a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_007C_01C40BF9.2F52E320" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_007C_01C40BF9.2F52E320 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable The TWM throttlebody, however has two male fittings to which the hose = could be connected. They are both in the same area, so it shouldn't matter = which one I connect to. The question is.....Should I plug the one that I am = not using?=20 You can use either, but you can also use both. Back when I was having = all my problems getting rev-1 to run, Tracy mentioned that there was a = slight advantage to connecting both tubes together, and then to the computer. There's a strong pulse as the intake of each rotor occurs, and having = the computer connected to both rotors at the same time allows it to see = pulses from both. This has the effect of doubling the frequency, and more or = less averaging out the vacuum signal. I never saw any improvement from = trying that, and in my current version, I use two separate lines. One goes to = the A controller and fuel regulator, and the other line goes to the B controller. =20 Do you just turn the pumps off for a few seconds and then turn off the ignition, or just turn off the pumps and let the engine die from fuel exhaustion, similar to pulling the mixture lever to shut down a = Lycoming? =20 As others have mentioned, just shut off the pump and let the engine die. = It will be surprisingly quickly. FWIW, I got my couple drops of fuel after shutting down with the EC-2 power switch yesterday, so I guess I'll have = to try to remember to use the pump switch, or injector disable switches. =20 Cheers, Rusty ------=_NextPart_000_007C_01C40BF9.2F52E320 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message

The TWM throttlebody, however has two male fittings to = which the=20 hose could be connected.  They are both in the same area, so it = shouldn't=20 matter which one I connect to.  The question is.....Should I plug = the one=20 that I am not using? 

You can = use either, but=20 you can also use both.  Back when I was having all my problems = getting=20 rev-1 to run, Tracy mentioned that there was a slight advantage to = connecting=20 both tubes together, and then to the computer.   There's a = strong=20 pulse as the intake of each rotor occurs, and having the computer = connected to=20 both rotors at the same time allows it to see pulses from both.  = This has=20 the effect of doubling the frequency, and more or less averaging out the = vacuum=20 signal.  I never saw any improvement from trying that, and in my = current=20 version, I use two separate lines.  One goes to the A controller=20 and fuel regulator, and the other line goes to the B = controller. =20


Do you just turn the pumps off for a few seconds and then turn = off the=20 ignition, or just turn off the pumps and let the engine die from fuel=20 exhaustion, similar to pulling the mixture lever to shut down a=20 Lycoming?  

As others have mentioned, = just shut off=20 the pump and let the engine die.  It will be surprisingly = quickly. =20 FWIW, I got my couple drops of fuel after shutting down with the EC-2 = power=20 switch yesterday, so I guess I'll have to try to remember to use the = pump=20 switch, or injector disable switches. 

Cheers,

Rusty

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