X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-wi0-f172.google.com ([209.85.212.172] verified) by logan.com (CommuniGate Pro SMTP 5.4.4) with ESMTPS id 5453042 for flyrotary@lancaironline.net; Thu, 22 Mar 2012 22:36:03 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.212.172; envelope-from=msteitle@gmail.com Received: by wibhj6 with SMTP id hj6so1163989wib.7 for ; Thu, 22 Mar 2012 19:35:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=OjhLFCRFsK9julVoHjer+FaUW8Pj55kdpu/M6JQ9XkI=; b=nPQ7hWQ7Sc2j8/HBHN4n9RbTxOiMajxvvudYSrv+37XGmf2Ag9XTU9ZcwbqNjCkBdf RrdzUHyoWjdlbim12niGKTTeTljjfkNySqUHxnU7fN5nVhhfYH7A43jL5n59fe4ARo9v BTLj/4V9HSRFNlREWK6qZyNUFsFjeOv1LauZGLY5e63aMjVe2lc4ISX1y1lJwYCH41zN SNbbuzgygZWTvmVNss8RX2nyMBlVGA6iOPAVLvqwazzrEos3tA8UUHHw/VSMrG+k3yGA mNqMRfNgFACetxnyUSEg27T2XstOau33oFWFFcC4rqDuB4AeAEwoHwzurCiplgJ4vHSr xxJg== MIME-Version: 1.0 Received: by 10.180.102.100 with SMTP id fn4mr2635975wib.1.1332470128615; Thu, 22 Mar 2012 19:35:28 -0700 (PDT) Received: by 10.223.104.13 with HTTP; Thu, 22 Mar 2012 19:35:28 -0700 (PDT) In-Reply-To: References: Date: Thu, 22 Mar 2012 21:35:28 -0500 Message-ID: Subject: Re: [FlyRotary] Re: #1 rotor cutting out From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=f46d0444ef4fb0a2ad04bbdfe081 --f46d0444ef4fb0a2ad04bbdfe081 Content-Type: text/plain; charset=ISO-8859-1 Tom, Here's a link to what I used. http://www.ebay.com/itm/40-44-48mm-EFI-throttle-bodies-snowmobiles-banshees-motorcycle-atvs-razor-/150777020343?pt=Snowmobile_Parts_Accessories&vxp=mtr&hash=item231b02bfb7#ht_500wt_1413 Mark On Thu, Mar 22, 2012 at 8:36 PM, Thomas Giddings wrote: > Never mind...I just found the pic > > Tom > > > On Mar 22, 2012, at 8:41 PM, Mark Steitle wrote: > > Ernest, > > I seriously doubt it. Do you have a picture, or can you explain your > design? > > Mark > > On Thu, Mar 22, 2012 at 8:54 AM, Ernest Christley wrote: > >> The first iteration of my manifold exhibited similar symptoms to what you >> describe. The EGTs of the #1 rotor wouldn't come off the peg until I hit >> 3000rpm, and then would stay way below #2. I determined that the way I had >> arranged it, the intake was creating a venturi vacuum in front of the #1 >> rotor. Could you have a similar imbalance? >> >> Mark Steitle wrote: >> >> >Tracy, >> > >> >OUCH, that hurts! OK, here's the rest of the story. I've changed my >> >intake manifold and changed injector sizes, so I'm back to the tuning >> >phase. The B controller won't run right now as I haven't copied A to >> >B yet. I'll have to do that before I can try the B controller. >> >Thanks for reminding me that I typically do things the hard way. >> > >> >Mark >> > >> >On 3/21/12, Tracy wrote: >> >> Trying the B controller should always be the FIRST thing to try since >> it is >> >> the easiest. This needs to be ingrained in all EC2/3 users mental (or >> >> preferably written) engine failure check list. Everything including >> the >> >> coil & injector drivers are swapped out when selecting B controller. >> Based >> >> on the number of time I have asked if the B controller was tried when >> called >> >> about an engine anomally I have concluded that very few builders are >> even >> >> aware it it there : ). >> >> >> >> Tracy >> >> >> >> Sent from my iPad >> >> >> >> On Mar 21, 2012, at 3:58 PM, Mark Steitle wrote: >> >> >> >>> I have been chasing a problem with my p-port 3-rotor where the #1 >> >>> rotor cuts out at around 3800 rpm, but comes back at around 5000 rpm. >> >>> When this happens, I can hear a change in the exhaust, and I see the >> >>> EGT on #1 drop way down to around 500*, so that's how I determined >> >>> that it was the #1 rotor. The other two rotors continue to run >> >>> normally. >> >>> >> >>> I have tried swapping coils, replacing the #1 rotor's plugs & coil >> >>> wires, and swapping injectors. I have not tried the B controller, but >> >>> that sounds like what I should try next. My suspicion is there may be >> >>> a defective coil driver circuit in the EC-2. I have borrowed another >> >>> 20B EC-2 to try, but won't be able to do the swap until this coming >> >>> weekend. >> >>> >> >>> Since things have been so quiet on the list, I thought I would post >> >>> this strange problem and see what suggestions others may have. >> >>> >> >>> Mark S. >> >>> >> >>> -- >> >>> 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 >> >> >> > >> >-- >> >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 >> > > > --f46d0444ef4fb0a2ad04bbdfe081 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Tom,=A0

Here's a link to what I used.

=

Mark

On Thu, Mar 22, = 2012 at 8:36 PM, Thomas Giddings <n360tg@earthlink.net> wrote:
Never mind...I just found the pic
<= br>
Tom


On Mar 22, 2012, at 8:41 PM, Mark Steitle wrote:

Ernest,

I seriously doubt it. =A0= Do you have a picture, or can you explain your design?

Mark=A0

On Thu, Mar 22, 2012 at 8:54= AM, Ernest Christley <echristley@att.net> wrote:
The first iteration of my manifold exhibited= similar symptoms to what you describe. =A0The EGTs of the #1 rotor wouldn&= #39;t come off the peg until I hit 3000rpm, and then would stay way below #= 2. =A0I determined that the way I had arranged it, the intake was creating = a venturi vacuum in front of the #1 rotor. =A0Could you have a similar imba= lance?

Mark Steitle <ms= teitle@gmail.com> wrote:

>Tracy,
>
>OUCH, that hurts! =A0OK, here's the rest of the story. =A0I've = changed my
>intake manifold and changed injector sizes, so I'm back to the tuni= ng
>phase. =A0The B controller won't run right now as I haven't cop= ied A to
>B yet. =A0I'll have to do that before I can try the B controller. >Thanks for reminding me that I typically do things the hard way.
>
>Mark
>
>On 3/21/12, Tracy <rwstracy@gmail.com> wrote:
>> Trying the B controller should always be the FIRST thing to try si= nce it is
>> the easiest. =A0 This needs to be ingrained in all EC2/3 users men= tal (or
>> preferably written) engine failure check list. =A0 Everything incl= uding the
>> coil & injector drivers are swapped out when selecting B contr= oller. =A0 Based
>> on the number of time I have asked if the B controller was tried w= hen called
>> about an engine anomally I have concluded that very few builders a= re even
>> aware it it there : ).
>>
>> Tracy
>>
>> Sent from my iPad
>>
>> On Mar 21, 2012, at 3:58 PM, Mark Steitle <msteitle@gmail.com> wrote:
>>
>>> I have been chasing a problem with my p-port 3-rotor where the= #1
>>> rotor cuts out at around 3800 rpm, but comes back at around 50= 00 rpm.
>>> When this happens, I can hear a change in the exhaust, and I s= ee the
>>> EGT on #1 drop way down to around 500*, so that's how I de= termined
>>> that it was the #1 rotor. =A0The other two rotors continue to = run
>>> normally.
>>>
>>> I have tried swapping coils, replacing the #1 rotor's plug= s & coil
>>> wires, and swapping injectors. =A0I have not tried the B contr= oller, but
>>> that sounds like what I should try next. =A0My suspicion is th= ere may be
>>> a defective coil driver circuit in the EC-2. =A0I have borrowe= d another
>>> 20B EC-2 to try, but won't be able to do the swap until th= is coming
>>> weekend.
>>>
>>> Since things have been so quiet on the list, I thought I would= post
>>> this strange problem and see what suggestions others may have.=
>>>
>>> Mark S.
>>>



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