X-Virus-Scanned: clean according to Sophos on Logan.com From: Received: from resqmta-ch2-08v.sys.comcast.net ([69.252.207.40] verified) by logan.com (CommuniGate Pro SMTP 6.1.8) with ESMTPS id 8366220 for flyrotary@lancaironline.net; Fri, 29 Jan 2016 15:59:45 -0500 Received-SPF: pass receiver=logan.com; client-ip=69.252.207.40; envelope-from=hoursaway1@comcast.net Received: from resomta-ch2-09v.sys.comcast.net ([69.252.207.105]) by resqmta-ch2-08v.sys.comcast.net with comcast id BwxE1s0012GyhjZ01wzTYZ; Fri, 29 Jan 2016 20:59:27 +0000 Received: from resmail-ch2-632v.sys.comcast.net ([162.150.50.156]) by resomta-ch2-09v.sys.comcast.net with comcast id BwzT1s0053NCDde01wzTj8; Fri, 29 Jan 2016 20:59:27 +0000 Date: Fri, 29 Jan 2016 20:59:26 +0000 (UTC) To: "Fly rotary blog, e-mail" Message-ID: <51673537.13988823.1454101166948.JavaMail.zimbra@comcast.net> In-Reply-To: References: Subject: Re: [FlyRotary] Re: parts upgrade; was: What do you think may be happening? MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_13988822_1847986414.1454101166946" X-Originating-IP: [::ffff:68.49.229.174] X-Mailer: Zimbra 8.0.7_GA_6031 (ZimbraWebClient - IE7 (Win)/8.0.7_GA_6031) Thread-Topic: parts upgrade; was: What do you think may be happening? Thread-Index: HgIeSTPQy1SI2iaInFmRhUOd8RpnJg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=comcast.net; s=q20140121; t=1454101167; bh=TYhJp3zmdVRidN9NWaEFabApBhqrxkS6RpmTmg4VdmA=; h=Received:Received:Date:From:To:Message-ID:Subject:MIME-Version: Content-Type; b=Sufd04ZselS3qN0M4VdRza/R8Mp++oM5voNGDyyhtBRBp95tuHan9WnRUQHxHp3Kr 1kVjjG9G2X/NlSsUDfLHhQGpA1/ENOrUmfEjRMTHCVNnTQs2fqM/vhbdAhNlrh9S8O GqVVltl65Or1Cr/be2jXA4KDqQEbAbe1CUWLecyD4fGg9gSfaIXIBuAFuQkHUvrgXo ZIMD8JWyhnb4196wJoAO5gkKjXxFvccxS1mWx7vzGbKcOMSMff8rQJXLvCE2kSQy77 z3UKfnFk4wPzOIvOnexL226qlukYucFXtWjPCQoB9ze0a2eJKodvXfIq+O4+rtrbK6 +BxPVTkJxrHmA== ------=_Part_13988822_1847986414.1454101166946 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Did you try a higher quality socket, Snap-on, Mac, Matco, Cornwell. They ha= ve specialty sockets for most any type of work.=C2=A0 David R. Cook=C2=A0 R= V6A Rotary.=20 ----- Original Message ----- From: "Bill Bradburry" =20 To: "Rotary motors in aircraft" =20 Sent: Friday, January 29, 2016 10:16:02 AM=20 Subject: [FlyRotary] Re: parts upgrade; was: What do you think may be happe= ning?=20 Steve,=20 =C2=A0=20 Bobby Hughes suggested that I only test the disable switches at 3000 rpm or= above.=C2=A0 So yesterday I tried that.=C2=A0 The secondary acted the same= , slightly richer.=C2=A0 The primary caused the engine to cough and choke u= p a couple of hairballs, go really lean, then come back and run slightly ri= cher just like the secondary.=C2=A0 They both came to a mixture of 11.6-11.= 7 after the disable.=20 =C2=A0=20 This works the same on both A and B controllers.=C2=A0 I think this means t= hat the EC-2 is working, although it is taking a while to get the decision = made to turn on the secondary after it realizes that I have turned the prim= ary off.=C2=A0 This time delay was causing the engine to stop when I ran th= e test at idle.=C2=A0 The way it acts might be a little disconcerting to a = passenger if I tell them I am checking to make sure the engine runs ok=E2= =80=A6.:>)=20 =C2=A0=20 On another note, I took your advice and bought and installed the BR10EIX pl= ugs yesterday after the test.=C2=A0 I found an old plug wrench and ground i= t down in order to get them installed.=C2=A0 Naturally the wrench was so th= in that it cracked on the install.=C2=A0 I doubt that it will hold up to do= a change.=C2=A0 I plan to get a wrench and have someone turn it down to fi= t.=20 =C2=A0=20 I assume that you have already done this.=C2=A0 What dimension did you turn= the socket to?=C2=A0 It seems that the opening in the block is one inch bu= t the wrench would need some clearance?=C2=A0 I am way too tight to buy tha= t wrench from Racing Beat for $82 + shipping!=C2=A0=C2=A0 :>)=20 =C2=A0=20 =C2=A0=20 Bill=20 From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]=20 Sent: Wednesday, January 27, 2016 9:36 PM=20 To: Rotary motors in aircraft=20 Subject: [FlyRotary] Re: parts upgrade; was: What do you think may be happe= ning?=20 =C2=A0=20 Bill,=20 =C2=A0=20 Today I spent some time in my plane trying all the permutations and combina= tions of applying power to the primary injectors, secondary injectors, and = grounding EC2 pin 30 with the cold switch.=20 =C2=A0=20 It turns out that my statement in the message below concerning the effect o= f grounding EC2 pin 30 when cutting power to the secondary injectors when t= he MAP is below the staging threshold MAP was not correct.=C2=A0 When I did= this today, the mixture went slightly richer just like you describe for yo= ur system.=20 =C2=A0=20 As a result, my guess is that=C2=A0this behavior is most likely not an indi= cation of a problem to be solved.=20 =C2=A0=20 Steve Boese=20 From: Steven W. Boese=20 Sent: Monday, January 25, 2016 12:23 PM=20 To: Rotary motors in aircraft=20 Subject: Re: [FlyRotary] Re: parts upgrade; was: What do you think may be h= appening?=20 =C2=A0=20 Bill,=20 =C2=A0=20 Turning on the cold start switch=C2=A0is intended to=C2=A0give you a much r= icher mixture when both the primary and secondary injectors are enabled.=C2= =A0 So your system is working correctly in this regard.=20 =C2=A0=20 Disabling the secondary injectors with the DPDT switch=C2=A0is intended to= =C2=A0both cut the power to the secondary injectors and enable the cold sta= rt function (as if the cold switch was turned on).=C2=A0 This should have n= o effect on the engine at MAP below the staging threshold since the engine = would be running on=C2=A0only the primary injectors just like it was before= flipping the secondary disable switch.=C2=A0=20 Your previous statement:=20 "With the engine idling at about 1400 rpm, and the mixture at about 14.7, I= turned off the secondary and the engine ran a little differently and the m= ixture went to about 13.0."=20 is troubling since doing this should have had no effect whatsoever.=C2=A0 I= s the mixture change=C2=A0persistent and reproducible?=C2=A0 If the mixture= eventually (within a few seconds) returns to the original value, then your= system is most likely working correctly in this regard too.=20 =C2=A0=20 Steve Boese=20 =C2=A0=20 ------=_Part_13988822_1847986414.1454101166946 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Did you try a higher quality socket, S= nap-on, Mac, Matco, Cornwell. They have specialty sockets for most any type= of work.  David R. Cook  RV6A Rotary.

From: "Bill Bradburry" <flyrotary@lancaironline.net>
= To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
= Sent: Friday, January 29, 2016 10:16:02 AM
Subject: [FlyRo= tary] Re: parts upgrade; was: What do you think may be happening?

Steve,

 

Bobby Hughes suggested that I on= ly test the disable switches at 3000 rpm or above.  So yesterday I tri= ed that.  The secondary acted the same, slightly richer.  The pri= mary caused the engine to cough and choke up a couple of hairballs, go real= ly lean, then come back and run slightly richer just like the secondary.&nb= sp; They both came to a mixture of 11.6-11.7 after the disable.

 

This works the same on both A an= d B controllers.  I think this means that the EC-2 is working, althoug= h it is taking a while to get the decision made to turn on the secondary af= ter it realizes that I have turned the primary off.  This time delay w= as causing the engine to stop when I ran the test at idle.  The way it= acts might be a little disconcerting to a passenger if I tell them I am ch= ecking to make sure the engine runs ok=E2=80=A6.:>)

 

On another note, I took your adv= ice and bought and installed the BR10EIX plugs yesterday after the test.&nb= sp; I found an old plug wrench and ground it down in order to get them inst= alled.  Naturally the wrench was so thin that it cracked on the instal= l.  I doubt that it will hold up to do a change.  I plan to get a= wrench and have someone turn it down to fit.

 

I assume that you have already d= one this.  What dimension did you turn the socket to?  It seems t= hat the opening in the block is one inch but the wrench would need some cle= arance?  I am way too tight to buy that wrench from Racing Beat for $8= 2 + shipping!   :>)

 

 

Bill

From: Rotary motor= s in aircraft [mailto:flyrotary@lancaironline.net]
Sent: Wed= nesday, January 27, 2016 9:36 PM
To: Rotary motors in aircraf= t
Subject: [FlyRotary] Re: parts upgrade; was: What do you th= ink may be happening?

 

Bill,

 

Today I spent some time in my plane trying al= l the permutations and combinations of applying power to the primary inject= ors, secondary injectors, and grounding EC2 pin 30 with the cold switch.

 

It turns out that my statement in the message= below concerning the effect of grounding EC2 pin 30 when cutting power to = the secondary injectors when the MAP is below the staging threshold MAP was= not correct.  When I did this today, the mixture went slightly richer= just like you describe for your system.

 

As a result, my guess is that this behav= ior is most likely not an indication of a problem to be solved.

 

S= teve Boese

From: Steve= n W. Boese
Sent: Monday, January 25, 2016 12:23 PM
To: Rotary motors in aircraft
Subject: Re: [FlyRotary] Re= : parts upgrade; was: What do you think may be happening?

 

Bill,

 

Turning on the cold start switch is inte= nded to give you a much richer mixture when both the primary and secon= dary injectors are enabled.  So your system is working correctly in th= is regard.

 

Disabling the secondary injectors with the DP= DT switch is intended to both cut the power to the secondary inje= ctors and enable the cold start function (as if the cold switch was turned = on).  This should have no effect on the engine at MAP below the stagin= g threshold since the engine would be running on only the primary inje= ctors just like it was before flipping the secondary disable switch. <= /SPAN>

Your previous statement:

"With the engine idling at about 1400 rpm, and the mixture = at about 14.7, I turned off the secondary and the engine ran a little diffe= rently and the mixture went to about 13.0."

is troubling since doing this should have had= no effect whatsoever.  Is the mixture change persistent and repr= oducible?  If the mixture eventually (within a few seconds) returns to= the original value, then your system is most likely working correctly in t= his regard too.

 

Steve Boese

 


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