flyrotary@lancaironline.net Mailing List Archive

That is interesting, Bill. Yes, there is no technical reason not to go "Plugs Up", but as you suggest there are practical reasons. The biggest one is all the vendors are making their product for the automobile orientation. I even had to do some mods (relatively minor) to fly with Tracy's PSRU. So unless there is some over riding reason, I certainly don't recommend it even though there are advantages Ed ----- Original Message ----- From: <wrjjrs@aol.com> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net> Sent: Monday, June 25, 2007 5:48 PM Subject: [FlyRotary] Re: Method of killing power?? Ed, It is interesting to note that the Curtis-Wright rotary engine had the long axis of the throchoid at about 45° with the plugs on the high side! Semi plugs up. The exhaust port was near the bottom. So your way of thinking has support. I've never thought plugs up was bad, just certain people do. You do have to have a better fabrication ability than conventional installs. the lack of available equipment is the biggest drawback. Bill Jepson -----Original Message----- From: Ed Anderson <eanderson@carolina.rr.com> To: Rotary motors in aircraft <flyrotary@lancaironline.net> Sent: Mon, 25 Jun 2007 10:34 am Subject: [FlyRotary] Re: Method of killing power?? Good point, Bill. Mine will slowly leak down through the pressure regulator, but not fast enough to preclude potential flooding with a leaky injector. But in my case, "Plugs Up", any fuel that enters the combustion chamber simply drains out the exhaust port(on the bottom) and since the plugs are at the highest point, there is less likelihood of any liquid gas entering into the spark plug cavity and drowning the plugs. This is the reason why flooding is not a significant event for the plugs up. Ed ----- Original Message ----- From: <wrjjrs@aol.com> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net> Sent: Monday, June 25, 2007 10:29 AM Subject: [FlyRotary] Re: Method of killing power?? Ed and Chris, One item of note is if your EFI uses the small orifice bleed to prevent vapor lock the system will depressurize. This will prevent flooding even if one of your injectors has minor leakage. Bill Jepson -----Original Message----- From: Ed Anderson <eanderson@carolina.rr.com> To: Rotary motors in aircraft <flyrotary@lancaironline.net> Sent: Sun, 24 Jun 2007 7:18 am Subject: [FlyRotary] Method of killing power?? Chris mentioned he favored stopping his engine by turning off the fuel pumps, I turn mine off by killing the injector power switches. But, this made me wonder how other folks stop their engines. Might be interesting to know. To everyone running a rotary engine and particularly flying with one - what is your normal method of killing the engine. 1. Turning off Main Power 2. Turning off EC2 Power 3. Turning off ignition 4. Turning off Fuel Pumps 5. Turning off injectors 6. Other 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 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 ________________________________________________________________________ AOL now offers free email to everyone. Find out more about what's free from AOL at AOL.com. =0 -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html ________________________________________________________________________ AOL now offers free email to everyone. Find out more about what's free from AOL at AOL.com. =0 -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html