X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-pz0-f199.google.com ([209.85.222.199] verified) by logan.com (CommuniGate Pro SMTP 5.3.4) with ESMTP id 4169465 for flyrotary@lancaironline.net; Wed, 17 Mar 2010 16:35:11 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.222.199; envelope-from=wdleonard@gmail.com Received: by pzk37 with SMTP id 37so1223377pzk.7 for ; Wed, 17 Mar 2010 13:34:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:content-type; bh=ygy86j+t99khAtv3su5F2LcoYonVTHXO+w6UjYgRBcs=; b=adgq4KYUy7W9t/6oPbkWkKb1bpF4FCefwR34UiLYY5DEUoD35/+Sabh5N4U7/eJq5b vlNr1cS6gQLCrillcsfNvSlJdFujodSavnhepoc3pQyZG5oPft5irbZKE9MjcyHlmRhq a/+iZknQpSJjtB76OEOBbBuS4gOPZ1SE8S7VM= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=F3o4waRJuFZ+lahqdj7jNfNUdnxBonR9Zgp/gkXBnvte6SBzMi/f1zFjlzf3U5W/Me +ysXVOBcBOKpDjDVtmXHXQR86N10jPs5dgYMwvKLJCzIRX4/1jD5r5OBVaXSA+FeJKp2 AXdQgb3uWe+LcnHzwcv7+CqZaQNSBnFJNA3hI= MIME-Version: 1.0 Received: by 10.141.125.21 with SMTP id c21mr138937rvn.35.1268858073101; Wed, 17 Mar 2010 13:34:33 -0700 (PDT) In-Reply-To: References: Date: Wed, 17 Mar 2010 13:34:33 -0700 Message-ID: <1c23473f1003171334w276c6377gc9002adbdd8d3ccc@mail.gmail.com> Subject: Re: [FlyRotary] Re: Injector Select Switch [FlyRotary] Re: Civil Discourse was : [FlyRotary] Re: Ut-Oh... From: David Leonard To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=00032555e1c2b7b69c0482050aab --00032555e1c2b7b69c0482050aab Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Mike, Having flown about half my hours without those switches, and the other half with them, I can tell you that I am glad I went to the extra trouble installing them. Not because I have experienced an injector failure, but because they have helped me trouble shoot a number of other problems (including the problem caused by installing the switches in the first place - an loose connection in one of the switches. Beside just failure of the injector itself, there are a number of other issues were having the switches available in flight could save you, for example, from having to land on a road. One injector could become clogged (open or closed) by a single piece of debris, or one of the crimps or fuses or wires leading to one of them could become compromised. Just don't shut them both off while at low altitude.... --=20 David Leonard Turbo Rotary RV-6 N4VY http://N4VY.RotaryRoster.net http://RotaryRoster.net On Tue, Mar 16, 2010 at 7:21 PM, Mike Wills wrote: > Ed, > > 1) Have you ever had an injector failure that required this? > 2) There were a number of occasions during initial debug when it was > helpful to disable injector pairs. It was easy enough to do this by pulli= ng > power where they were plugged into the essential bus. Not as convenient a= s > flipping a switch, but I don=92t anticipate having to mess with it ever a= gain. > 3) Are your supply lines to your injectors fused? If not, why not? If the= y > do short in flight how do you know to turn off the switches? > 4) I turn off the fuel pump to kill the engine. I suppose this does leave= a > possibility of a little fuel in the chamber? Not sure there is any reason > for concern? > > Mike Wills > > *From:* Ed Anderson > *Sent:* Tuesday, March 16, 2010 6:30 AM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Injector Select Switch [FlyRotary] Re: Civil > Discourse was : [FlyRotary] Re: Ut-Oh... > > I also find the =93Injector Select=94 switches useful for several purpo= ses, > Rino. > > > > 1. If a problem with one injector of a pair occurs, I can turn that pair > off and fly home on the remaining pair. > > 2. They are great for trouble shooting injector problems by permitting y= ou > to choose which pair will be on without question. > > 3. In the highly unlikely (but possible) event that a power wire to a pai= r > should short to ground, you can turn the power off to that pair. > > 4. I also use them to turn off the engine =96 that ensures no residue fue= l in > the housings. > > > > But, if not wired correctly they can cause a new installation some > puzzling problems {:>) and they do add another component and we know > components can fail =96 although if sized properly for the correct curren= t and > installing quality switches and wire correct the failure in one will not > take you down and the likelihood of both failing at the same time is rath= er > remote. > > > > But, once again, you can certainly fly without them =96 I just find them = very > useful. > > > > My 0.02 > > > > Ed > > > > Ed Anderson > > Rv-6A N494BW Rotary Powered > > Matthews, NC > > eanderson@carolina.rr.com > > http://www.andersonee.com > > http://www.dmack.net/mazda/index.html > > http://www.flyrotary.com/ > > http://members.cox.net/rogersda/rotary/configs.htm#N494BW > > http://www.rotaryaviation.com/Rotorhead%20Truth.htm > ------------------------------ > > *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] *O= n > Behalf Of *Rino > *Sent:* Tuesday, March 16, 2010 8:05 AM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: Civil Discourse was : [FlyRotary] Re: Ut-Oh... > > > > I find the "injector failure Switches" convenient during the warmup to te= st > the operation of the injectors just like the primary and seconday plugs > test. > > > > Rino Lacombe > > > > ----- Original Message ----- > > *From:* Mike Wills > > *To:* Rotary motors in aircraft > > *Sent:* Tuesday, March 16, 2010 1:23 AM > > *Subject:* [FlyRotary] Re: Civil Discourse was : [FlyRotary] Re: Ut-Oh... > > > > I chose not to implement the "injector failure switches". I don=92t know = if > there are any statistics on it, but I suspect injector failure is an > extremely rare occurrence. On the other hand if one did fail I'd rather f= ly > the plane and troubleshoot the problem after I'm on the ground. But that= =92s > part of the advantage in going the Experimental route - build it the way = you > want it. > > > > Mike Wills > > > > *From:* Bktrub@aol.com > > *Sent:* Monday, March 15, 2010 8:47 AM > > *To:* Rotary motors in aircraft > > *Subject:* [FlyRotary] Re: Civil Discourse was : [FlyRotary] Re: Ut-Oh... > > > > In the event of a primary or secondary injector failure, the affected > injector set can be switched off and the cold start switch used to richen= up > the remaining injectors. This as per Tracy's instructions. I haven't trie= d > this, and hope I never have to in the heat of battle, but there it is. > > > > Brian Trubee > > > > __________ Information from ESET NOD32 Antivirus, version of virus > signature database 3267 (20080714) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com > --00032555e1c2b7b69c0482050aab Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable
Mike,
=A0
Having flown about half my hours without those switches, and the other= half with them, I can tell you that I am glad I went to the extra trouble = installing them.=A0 Not because I have experienced an injector failure, but= because they have helped me trouble shoot a number of other problems (incl= uding the problem caused by installing the switches in the first place - an= loose connection in one of the switches.=A0
=A0
Beside just failure of the injector itself, there are a number of othe= r issues were having the switches available in flight could =A0save you, fo= r example, from having to land on a road.=A0 One injector could become clog= ged (open or closed) by a single piece of debris, or one of the crimps or f= uses or wires leading to one of them could become compromised.
=A0
Just don't shut them both off while at low altitude....
=A0
--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryR= oster.net


On Tue, Mar 16, 2010 at 7:21 PM, Mike Wills <rv-4mike@cox.net&= gt; wrote:
Ed,
=A0
1) Have you ever had an injector failure that r= equired this?
2) There were a number of occasions during init= ial debug when it was helpful to disable injector pairs. It was easy enough= to do this by pulling power where they were plugged into the essential bus= . Not as convenient as flipping a switch, but I don=92t anticipate having t= o mess with it ever again.
3) Are your supply lines to your injectors fuse= d?=A0If not, why not? If they do short in flight how do you know to turn of= f the switches?
4) I turn off the fuel pump to kill the engine.= I suppose this does leave a possibility of a little fuel in the chamber? N= ot sure there is any reason for concern?
=A0
Mike Wills=A0

Sent: Tuesday, March 16, 2010 6:30 AM
To: Rotary motors in aircraft <= /div>
Subject: [FlyRotary] Injector Select Switch [FlyRotary] Re: Civ= il Discourse was : [FlyRotary] Re: Ut-Oh...

I also =A0find = the =93Injector Select=94 switches useful for several purposes, Rino.

=A0

1. =A0If a prob= lem with one injector of a pair occurs, I can turn that pair off and fly ho= me on the remaining pair.

2.=A0 They are = great for trouble shooting injector problems by permitting you to choose wh= ich pair will be on without question.

3. In the highl= y unlikely (but possible) event that a power wire to a pair should short to= ground, you can turn the power off to that pair.=A0

4. I also use t= hem to turn off the engine =96 that ensures no residue fuel in the housings= .

=A0

=A0But, if not = wired correctly they can cause a new installation some puzzling problems {:= >) and they do add another component and we know components can fail =96= although if sized properly for the correct current and installing quality = switches and wire correct the failure in one will not take you down and the= likelihood of both failing at the same time is rather remote.

=A0

But, once again= , you can certainly fly without them =96 I just find them very useful.

=A0

My 0.02<= /font>

=A0

Ed

=A0

From:= Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Rino
Sent: Tuesday, March 16, 20= 10 8:05 AM
To: Rotary mo= tors in aircraft
Subject: [FlyRotary] Re: Civil Discourse was : [FlyRotary] Re: Ut-Oh...

=A0

I find the &q= uot;injector failure Switches" convenient during the warmup to test th= e operation of the injectors just like the primary and seconday plugs test.=

=A0

Rino Lacombe<= /span>

=A0

----- Origina= l Message -----

From: Mike Wills

<= span style=3D"FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY= : Arial">To: Rotary motors in aircraft

<= span style=3D"FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY= : Arial">Sent: T= uesday, March 16, 2010 1:23 AM

<= span style=3D"FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY= : Arial">Subject: = [FlyRotary] Re: Civil Discourse was : [FlyRotary] Re: Ut-Oh...

=A0

I chose n= ot to implement the "injector failure switches". I don=92t know i= f there are any statistics on it, but I suspect injector failure is an extr= emely rare=A0occurrence. On the other hand if one did fail I'd rather f= ly the plane and troubleshoot the problem after I'm on the ground.=A0Bu= t that=92s part of the advantage in going the Experimental route - build it= the way you want it.<= /span>

=A0

Mike Will= s=A0

=A0<= /font>

Sent: Monday, March 15, 2010 8:47 AM

Subject: [FlyRotary] Re: Civil Discourse was : = [FlyRotary] Re: Ut-Oh...

=A0

In the event = of a primary or secondary injector failure, the affected injector set can b= e switched off and the cold start switch used to richen up the remaining in= jectors. This as per Tracy's instructions. I haven't tried this, an= d hope I never have to in the heat of battle, but there it is.

=A0

Brian Trubee<= /span>



_____= _____ Information from ESET NOD32 Antivirus, version of virus signature dat= abase 3267 (20080714) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com




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