X-Virus-Scanned: clean according to Sophos on Logan.com From: "Bill Bradburry" Received: from vms173025pub.verizon.net ([206.46.173.25] verified) by logan.com (CommuniGate Pro SMTP 6.1.8) with ESMTPS id 8340901 for flyrotary@lancaironline.net; Wed, 20 Jan 2016 13:44:25 -0500 Received-SPF: pass receiver=logan.com; client-ip=206.46.173.25; envelope-from=bbradburry@verizon.net Received: from Desktop ([173.71.14.135]) by vms173025.mailsrvcs.net (Oracle Communications Messaging Server 7.0.5.32.0 64bit (built Jul 16 2014)) with ESMTPA id <0O1900HIBLD0BP20@vms173025.mailsrvcs.net> for flyrotary@lancaironline.net; Wed, 20 Jan 2016 12:43:49 -0600 (CST) X-CMAE-Score: 0 X-CMAE-Analysis: v=2.1 cv=EdU1O6SC c=1 sm=1 tr=0 a=YsSROtz1JO3+GnD2bqMDlQ==:117 a=o1OHuDzbAAAA:8 a=oR5dmqMzAAAA:8 a=7aQ_Q-yQQ-AA:10 a=r77TgQKjGQsHNAKrUKIA:9 a=Ia-xEzejAAAA:8 a=XV_Mkijt1krIHVk89ocA:9 a=CjuIK1q_8ugA:10 a=SSmOFEACAAAA:8 a=gNBMtcX5TDBbazt1MckA:9 a=HF0wTLJnckyZjXDN:21 a=gKO2Hq4RSVkA:10 a=UiCQ7L4-1S4A:10 a=hTZeC7Yk6K0A:10 a=frz4AuCg-hUA:10 To: "'Rotary motors in aircraft'" References: In-reply-to: Subject: RE: [FlyRotary] Re: What do you think may be happening? Date: Wed, 20 Jan 2016 12:43:48 -0600 Message-id: <9FE8CB18BF84480693E5E01C2E1EFAF8@Desktop> MIME-version: 1.0 Content-type: multipart/alternative; boundary="----=_NextPart_000_0036_01D15380.35B308E0" X-Mailer: Microsoft Office Outlook 11 Thread-index: AdFTsOra4nU5UsTzToqedYgFw+zzpAAASWqw X-MIMEOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 This is a multi-part message in MIME format. ------=_NextPart_000_0036_01D15380.35B308E0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Steve, I think my engine dies and has little effect when I turn off the primary and secondary respectively. I will have to investigate this when I get the switches replaced (I plan to replace both) I may have something miswired?? It is cold, maybe Tracy is back in Florida and will chime in. Bill _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] Sent: Wednesday, January 20, 2016 12:32 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: What do you think may be happening? Bill, I have tested the injector disable function with my EC2's. With the power interrupted to the primary injectors and the cold switch on, the engine runs on the secondary injectors at MAP below the staging threshold. I don't know the details of how the controller treats the cold switch, but it is possible that with the cold switch on, the controller increases the fuel flow by using both the primary and secondary injectors at MAP below the staging threshold, and doubles the injector pulse width at MAP above the staging threshold. I remember investigating this when first using the controllers but don't remember the exact details. My backup system does work at low MAP. Steve _____ From: Rotary motors in aircraft on behalf of Bill Bradburry Sent: Wednesday, January 20, 2016 11:15 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: What do you think may be happening? Bobby, I am sorry I was not clear and the reason was that I was not clear myself. The injector disable switches are for in case you lose an injector in flight and the engine starts to run on only one rotor. You can disable either of the primary or secondary injectors which will take the failed injector out of the circuit. Tracy says you should test this to make sure that it works. That is where my question came from. You can only test the disable switches when the engine is not staged. If the engine is staged, and you turn off the primary injectors, the engine will die because the secondary injectors are not running, and if you turn off the secondary injectors, the engine will run rich because you turned on the cold start but the secondaries were not running anyway. I am not sure what would happen if you lost a primary injector in flight, disabled the primary injectors, then reduced power to the staging point in order to land??? I suspect all would get quiet! :>( Bill _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] Sent: Wednesday, January 20, 2016 11:35 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: What do you think may be happening? Bill, I'm not sure I understand the question. If your referring to my "center off switch position" it's not used in flight. Intentionally anyway :-) It's used to shut down the engine. Primary injector switch of course. Same switch used for both primary and secondary injectors. Bobby From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] Sent: Wednesday, January 20, 2016 10:55 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: What do you think may be happening? Changing the subject a minute.How do you disable the secondary's when the engine is staged?? They are not running anyway??? Bill ------=_NextPart_000_0036_01D15380.35B308E0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Steve,

I think my engine dies and has = little effect when I turn off the primary and secondary respectively.  I = will have to investigate this when I get the switches replaced (I plan to replace = both)  I may have something miswired??

It is cold, maybe Tracy is back in Florida and will chime in.

 

Bill

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
Sent: Wednesday, January = 20, 2016 12:32 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = What do you think may be happening?

 

Bill,

 

I have tested = the injector disable function with my EC2's.  With the power = interrupted to the primary injectors and the cold switch on, the engine runs on the = secondary injectors at MAP below the staging threshold.  I don't know the = details of how the controller treats the cold switch, but it is possible that with = the cold switch on, the controller increases the fuel flow by using both the primary and secondary injectors at MAP below the staging threshold, and = doubles the injector pulse width at MAP above the staging threshold.  I = remember investigating this when first using the controllers but don't remember = the exact details.  My backup system does work at low = MAP.

 

Steve

 

From: = Rotary motors in aircraft = <flyrotary@lancaironline.net> on behalf of Bill Bradburry <flyrotary@lancaironline.net>
Sent: Wednesday, January = 20, 2016 11:15 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = What do you think may be happening?

 

Bobby,

I am sorry I was = not clear and the reason was that I was not clear myself.

 

The injector = disable switches are for in case you lose an injector in flight and the engine = starts to run on only one rotor.  You can disable either of the primary or secondary injectors which will take the failed injector out of the = circuit.

Tracy says you should test this to make sure that it works.  = That is where my question came from.  You can only test the disable = switches when the engine is not staged.  If the engine is staged, and you = turn off the primary injectors, the engine will die because the secondary = injectors are not running, and if you turn off the secondary injectors, the engine = will run rich because you turned on the cold start but the secondaries were not = running anyway.

 

I am not sure = what would happen if you lost a primary injector in flight, disabled the primary injectors, then reduced power to the staging point in order to = land???  I suspect all would get quiet!  :>(

 

Bill =

 

From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net]
Sent: Wednesday, January = 20, 2016 11:35 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = What do you think may be happening?

 

Bill,=

 

I’m = not sure I understand the question.  If your referring to my “center off = switch position” it’s not used in flight. Intentionally anyway = J It’s used to shut down the engine. Primary injector switch of = course. Same switch used for both primary and secondary injectors. =

 

Bobby=

 

From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net]
Sent: Wednesday, January = 20, 2016 10:55 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = What do you think may be happening?

 

 <= /font>

 

Changing the = subject a minute…How do you disable the secondary’s when the engine is staged??  They are not running anyway???

 

Bill =

 

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