X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-qy0-f187.google.com ([209.85.221.187] verified) by logan.com (CommuniGate Pro SMTP 5.3.4) with ESMTP id 4165476 for flyrotary@lancaironline.net; Sun, 14 Mar 2010 13:49:43 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.221.187; envelope-from=rwstracy@gmail.com Received: by qyk17 with SMTP id 17so2035793qyk.11 for ; Sun, 14 Mar 2010 10:49:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:date:x-google-sender-auth:message-id:subject:from:to :content-type; bh=GLgZJoeDZmUFfLm29QMiJnenlXUIdpeBynJ8zBac3Wk=; b=jwdd9foHC2vuM14SRDM1OXh18CPRry4MYh4NZq5tsW2akS3zwmxUDkGtxHvVuBFc3i aG6bu4vRRZ27hZvqjVeiYNYVlZYbwvgejkDcyBxlh20E9ZKC6xU0MjONE+UzS7wLjxn3 VGi58GujLeeCs7cFMXclx5RTxQdCMvVckuKws= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:content-type; b=YjPfEmlTaGm2RYHt3a0pkfcrpZ1NCEWQv0Mmi27E+mfoVl1SIECxXMBZj2O1eMRwmx U4fNT0yDaiAqZbvRh5JmA58AaLrsncekD1NgnyZQFKXmmqgI/FYr8XARgIieTk3A4rcA ZGSYjod/tonNwL5+TbqSlh5BULeWvpMrohYrw= MIME-Version: 1.0 Sender: rwstracy@gmail.com Received: by 10.224.26.103 with SMTP id d39mr1235433qac.230.1268588946994; Sun, 14 Mar 2010 10:49:06 -0700 (PDT) In-Reply-To: References: Date: Sun, 14 Mar 2010 13:49:06 -0400 X-Google-Sender-Auth: 33e0eecb7d791c98 Message-ID: <1b4b137c1003141049x750b13e6ld6ed989b2b2fc713@mail.gmail.com> Subject: Re: [FlyRotary] Re: Ut-Oh... From: Tracy Crook To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=00c09f8995618d377e0481c6610b --00c09f8995618d377e0481c6610b Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable >snip< Can you give a little more detail about where that nut that shorted out the EC2 came from? Was it one of the nuts that secures the pcb to the case lid? My understanding is that the nut came from the hardware used to mount the lower case to the aircraft, not the hardware mounting the EC2 board to the case. I don't know the exact type of hardware used in this particular installation. Tracy On Sun, Mar 14, 2010 at 11:48 AM, Mike Wills wrote: > You of course are totally correct Tracy. Anyone who signs up to build > their own airplane, and to power it with an engine that is not what the > designer recommended has to be willing to accept complete responsibility = for > all installation and integration issues. Even if they buy hardware from a > third party such as you. > > Say what you want about standard aircraft engines, but at least the > installation requirements are well known. I doubt there are any two rotar= y > installations that are identical. We are on the bleeding edge. > > In my install I remote mounted the switches from the control panel. I did > this for a number of reasons, one of which is I chose to use MS switches > which are larger, much more robust, and have a much stiffer snap action w= hen > toggling. They are harder to accidentally switch but I have still had a > couple of occasions where I've accidentally toggled the A - B controller > selector while climbing in or out of the airplane. Like I said in my > previous, I'm considering removing the cold start switch since I've never > had a need to use it. Personal choice. > > Can you give a little more detail about where that nut that shorted out t= he > EC2 came from? Was it one of the nuts that secures the pcb to the case li= d? > > Mike Wills > > *From:* Tracy Crook > *Sent:* Sunday, March 14, 2010 7:10 AM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: Ut-Oh... > > I know Dave or Jon wouldn't phrase it this way but I've already received = a > number of messages from others about these two recent in-flight power > failures due to EC2 issues. > > Jon's was due to a loose mounting nut inside the EC2 that shorted the ma= in > power input filter to ground and burned open both foils from the 2 power > input pins. How lucky was that. > > Anyway, at the risk of sounding defensive, I thought I'd share my > response to one of them that suggested changing the EC2 case to an extern= al > mount of some sort. I'm sure there are scores of messages on the way urg= ing > me to place switch guards on the cold start switch : ) > > REPLY > > Hello ---------- > I'm aware of the failure and have the unit here for repair. > > Like a thousand other critical details in building an aircraft, it is > not possible to explicitly spell out all of them. The precise method and > hardware used to accomplish it are not part of the EC2 or the instruction= s. > The first paragraph of the installation guide does say the following: > > "Needless to say, the quality of installation is just as important as the > quality of the hardware itself. It is not practical to include a course > on proper electrical wiring practices in these installation instructions, > but it is imperative that proper wiring techniques be employed during the > installation of the EC2." > > It was my thought that avoiding the presence of loose metal objects insid= e > an electrical device that your life depends on fell into the category of > "needless to say". > > Nevertheless, a cautionary note might well be worth adding. As also > stated in the first paragraph of the instructions, > " I want your project to succeed and your life to be a long and happy one= . > " > > All the best, > Tracy Crook, RWS > > > On Sun, Mar 14, 2010 at 2:34 AM, David Leonard wrote= : > >> Boy, word sure gets around these days.. >> >> short answer... inadvertently hit cold start switch while messing with G= PS >> and flying at 1000' AGL.. not enough time to troubleshoot... had to fl= y >> plane and find a place to land. >> >> Both happy and appalled when the I realized the problem 2 minutes after >> the commotion stopped. The tower must have been plain appalled when I t= ook >> off again later this afternoon. >> >> -- >> David Leonard >> >> Turbo Rotary RV-6 N4VY >> http://N4VY.RotaryRoster.net >> http://RotaryRoster.net >> >> >> On Sat, Mar 13, 2010 at 5:31 PM, Dave wrote: >> >>> Bill Monroe wrote: >>> >>>> >>>> Dave=92s going to have an interesting story to tell=85 >>>> >>>> http://www.cbs8.com/global/story.asp?s=3D12136229 >>>> >>>> Glad he landed safe.. >>> >>> -- >>> Homepage: http://www.flyrotary.com/ >>> Archive and UnSub: >>> http://mail.lancaironline.net:81/lists/flyrotary/List.html >>> >> >> >> > --00c09f8995618d377e0481c6610b Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable >snip<
Can you give a little more detail ab= out where that nut=20 that shorted out the EC2 came from? Was it one of the nuts that secures the= pcb=20 to the case lid?

My understanding is that the nut came from t= he hardware used to mount the lower case to the aircraft, not the hardware = mounting the EC2 board to the case.=A0 I don't know the exact type of h= ardware used in this particular installation.

Tracy

=A0

On Sun, Mar 14, 2010 at 11:48 AM, Mike Wills <rv-4mike@cox.net> wrote:
You of course are totally correct Tracy. Anyone= who=20 signs up to build their own airplane, and to power it with an engine that i= s not=20 what the designer recommended has to be willing to accept complete=20 responsibility for all installation and integration issues. Even if they bu= y=20 hardware from a third party such as you.
=A0
Say what you want about standard aircraft engin= es, but=20 at least the installation requirements are well known. I doubt there are an= y two=20 rotary installations that are identical. We are on the bleeding=20 edge.
=A0
In my install I remote mounted the switches fro= m the=20 control panel. I did this for a number of reasons, one of which is I chose = to=20 use MS switches which are larger, much more robust, and have a much stiffer= snap=20 action when toggling. They are harder to accidentally switch but I have sti= ll=20 had a couple of occasions where I've accidentally toggled the A - B con= troller=20 selector while climbing in or out of the airplane. Like I said in my previo= us,=20 I'm considering removing the cold start switch since I've never had= a need to=20 use it. Personal choice.
=A0
Can you give a little more detail about where t= hat nut=20 that shorted out the EC2 came from? Was it one of the nuts that secures the= pcb=20 to the case lid?
=A0
Mike Wills=A0

Sent: Sunday, March 14, 2010 7:10 AM
Subject: [FlyRotary] Re: Ut-Oh...

I know Dave or Jon wouldn&= #39;t phrase it this way but I've already=20 received a number of messages from others about these two recent in-flight = power=20 failures due to EC2 issues.

=A0Jon's was due to a loose mountin= g nut=20 inside the EC2 that shorted the main power input filter to ground and burne= d=20 open both foils from the 2 power input pins.=A0 How lucky was that.=20

=A0 Anyway, at the risk of sounding defensive, I thought I'd sh= are my=20 response to one of them that suggested changing the EC2 case to an external= =20 mount of some sort.=A0 I'm sure there are scores of messages on the way= =20 urging me to place switch guards on the cold start switch=A0 :=20 )

REPLY

Hello ----------
=A0 I'm aware of the failure = and=20 have the unit here for repair.

=A0=A0 Like a thousand other=20 critical details in building an aircraft, it is not possible to explicitly = spell=20 out all of them.=A0 The precise method and hardware used to accomplish it a= re=20 not part of the EC2 or the instructions. The first paragraph of the install= ation=20 guide does say the following:

"Needless to say,=20 the quality of installation is just as important as the quality of the hard= ware=20 itself.=A0 It is not practical to include a course on proper= =20 electrical wiring practices in these installation instructions, but it is= =20 imperative that proper wiring techniques be employed during the installatio= n of=20 the EC2."

It was my thought that avoiding the presence of loos= e metal=20 objects inside an electrical device that your life depends on fell into the= =20 category of=A0 "needless to say".

Nevertheless, a cautiona= ry note=20 might well be worth adding.=A0=A0 As also stated in the first paragraph of= =20 the instructions,
" I want your project to=20 succeed and your life to be a long and happy one. "

All the best,
Tracy Crook, =A0=A0 RWS
=A0

On Sun, Mar 14, 2010 at 2:34 AM, David Leonard <= span dir=3D"ltr"><wdleonard@gmail.com> wrote:
Boy,=A0 word sure= gets around these days..=A0=20

short answer... inadvertently hit cold start switch while messing= with=20 GPS and flying at 1000' AGL..=A0 not enough time to troubleshoot...= =A0=20 had to fly plane and find a place to land.

Both happy and appalled= when=20 the I realized the problem 2 minutes after the commotion stopped.=A0 The= =20 tower must have been plain appalled when I took off again later this=20 afternoon.

--
David Leonard

Tur= bo Rotary=20 RV-6 N4VY
h= ttp://N4VY.RotaryRoster.net
http://RotaryRoster.net=20


On Sat, Mar 13, 2010 at 5:31 PM, Dave <d= avid.staten@gmail.com> wrote:
Bill Monroe wrote:

Dave=92s = going to have an interesting story to=20 tell=85

http://www.cbs8.com/global/story.asp?s=3D12136229=

Glad=20 he landed safe..

--
Homepage: =A0http://www.flyrotary.co= m/
Archive and UnSub: =A0 http://mail.lancaironline.ne= t:81/lists/flyrotary/List.html



=

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