X-Virus-Scanned: clean according to Sophos on Logan.com From: "Tracy" Received: from mail-it0-f48.google.com ([209.85.214.48] verified) by logan.com (CommuniGate Pro SMTP 6.1.10) with ESMTPS id 8732912 for flyrotary@lancaironline.net; Wed, 15 Jun 2016 10:25:16 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.214.48; envelope-from=rwstracy@gmail.com Received: by mail-it0-f48.google.com with SMTP id z189so109028856itg.0 for ; Wed, 15 Jun 2016 07:25:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=subject:references:from:in-reply-to:message-id:date:to :content-transfer-encoding:mime-version; bh=n3QX7ZKkfKLHijD8qiNoSvuJSnGVdRIzLSidPgykRFk=; b=FFeclPoWM7MydW3gWEFuDP7kbipofVXIGggnOxRJBrMnQ/udlGRiGHjNi9D/HMICU4 GGEihB3ZHFU8m2KrskYMaFarEzjldxWhXg4TfcxTteTirIabYEGE6kZRkhmo50QGCq+K XeD6jSiyS0lX8xqB+telcBFeLX5bhBJillCwotYlPkUtMlrIP28staTbRwCoDw8Uz7Ny ozBqg3TITZCqN8mWi5X5iqcpRijT8POWeQl176gUx8oIu8It8PRPYkO/MziiFTEkLCLL x+6MKP0gf3lZ2JX+81nFhXSgzFnnwCNuuWxzqBKp8Paseai/cwCDTDJ+QaaswteEFBCC F2DQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:subject:references:from:in-reply-to:message-id :date:to:content-transfer-encoding:mime-version; bh=n3QX7ZKkfKLHijD8qiNoSvuJSnGVdRIzLSidPgykRFk=; b=EBYajJPQoAq9pnNMszhoTxT02F/yyVLZTGOQrxKHWr4J2pBmhCNdTiFvoAomDbWvKA VpHu7po0843kxKn7WAIy09tSG/n0ACvpfypYPAGKRebRnd3HyjguvPUplQyNILHK73RT OGs0oOdlJVDSoePyXz22cIEqna1o5qyqjbT0y4QABIJmvXdhH6wLiZS9TTnRxSZVHkZk 3MOMMHWzDxmQuTXh/71KLhjyrJhRvQZk6KBCPBwiDqaS1GC+c5K7QfjUxVivpvSRaX65 qLE9NfDeWSpIpi/hMCsKZjB95iY1y9xui8X6tuMTerRq+QbvqnwL7OxrWHei1F40nc8N aYOA== X-Gm-Message-State: ALyK8tLzKUQzjJ3g8mvywTsjumFjefpTeUOYANzPMgwvJgUOsV+6dP+KRik6j0FWhUBE6A== X-Received: by 10.36.123.77 with SMTP id q74mr16687641itc.44.1466000699021; Wed, 15 Jun 2016 07:24:59 -0700 (PDT) Return-Path: Received: from [10.228.65.119] (83.sub-97-43-195.myvzw.com. [97.43.195.83]) by smtp.gmail.com with ESMTPSA id d198sm17179123iog.25.2016.06.15.07.24.57 for (version=TLSv1/SSLv3 cipher=OTHER); Wed, 15 Jun 2016 07:24:58 -0700 (PDT) Subject: Re: [FlyRotary] Re: [Non-DoD Source] [FlyRotary] Re: Mistral References: Content-Type: multipart/alternative; boundary=Apple-Mail-7B5E625C-7CF9-4DFE-867D-DD037E504B6F X-Mailer: iPad Mail (13F69) In-Reply-To: Message-Id: <7ABFA891-A503-40CE-A919-2786D0CCBC7E@gmail.com> Date: Wed, 15 Jun 2016 08:24:55 -0600 To: Rotary motors in aircraft Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) --Apple-Mail-7B5E625C-7CF9-4DFE-867D-DD037E504B6F Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable If builders at thinking about actually building the plenum style I made, I s= hould add that there is a layer of fiberglass on both sides of the plywood t= o give it stiffness. That is needed if you're going to make a plenum with f= lat sides. I think I used a dowel between the flat sides too. Tracy Sent from my iPad > On Jun 14, 2016, at 20:45, Terry wrote: >=20 > Okay, I'll skip the aluminum, but.... > Fiberglass....Carbon fiber......could be an alternative over plywood. As a= composite I can form a stronger cigar box at a fraction of the weight. >=20 > Terry Adams > N51079 > KSCK >=20 >> On 6/14/2016 2:15 PM, Charlie England wrote: >> Tracy's is on the intake/exhaust side of the engine; the intake tubes are= a straight shot from bellmouth to engine block. Everyone seems to go for th= e PL inspired 19" length tubes (or even longer, to find a spot on the plugs s= ide of the engine for the plenum. I wonder if that's part of the reason (alo= ng with the drag of 'snake-y' tubes) that some aren't getting the HP they ho= ped for. >>=20 >> Note: If you build a 'cigar box' style plenum (air box) with flat sides, d= on't make my mistake. Tracy's box is made of plywood for a reason; I got cre= ative & made mine using aluminum and Tracy pointed out that the pres= sure pulses will quickly shred it. Rebuilding my plenum is on my 'to do' lis= t. I've got some 6" aluminum tubing that I may use, but the simplest thing i= s to just build it with plywood. >>=20 >>> On 6/14/2016 1:38 PM, William Jepson wrote: >>> Something to remember an airbox like that must be on the "cold side" of t= he engine. Don't put it over the exhaust.=20 >>> Bill >>>=20 >>>> On Tue, Jun 14, 2016 at 10:13 AM, Luciano, Luis I CIV PEOSUB, PMS404P <= flyrotary@lancaironline.net> wrote: >>>> Hahaha... I always heard of Tracy's simple intake manifold but never ha= d seen the actual setup (except for zoomed out shots in Contact mag). Now I= feel better as I move forward with my build :) Thanks for sharing Charlie!= !! >>>>=20 >>>> Luis >>>>=20 >>>> -----Original Message----- >>>> From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] >>>> Sent: Tuesday, June 14, 2016 12:27 PM >>>> To: Rotary motors in aircraft >>>> Subject: [Non-DoD Source] [FlyRotary] Re: Mistral >>>>=20 >>>> On 6/14/2016 9:52 AM, Tom Mann wrote: >>>> > Any Idea as to where one might find this information? >>>> > >>>> > -----Original Message----- From: Charlie England >>>> > Sent: Tuesday, June 14, 2016 9:43 AM >>>> > To: Rotary motors in aircraft >>>> > Subject: [FlyRotary] Re: Mistral >>>> > >>>> > It's not that hard to make an intake that will make great power. Look= >>>> > at Tracy's setup. Might not be aesthetically beautiful to some eyes, >>>> > but to me, function is beauty. I don't know of any N/A 2 rotor that's= >>>> > as fast as his -4, or as efficient at lower speeds. And really simple= to make. >>>> > >>>> > Charlie >>>>=20 >>>> Hope Tracy doesn't mind; here's a shot of the Renesis manifold. I belie= ve that the tubes inside the 'box' were later extended to be near the opposi= te wall. IIRC, Tracy said that the tubes are ~11" from the face of the block= to the end of the bellmouth. >>>>=20 >>>> You can see old versions of the RWS website by using the Wayback Machin= e & picking a date. >>>>=20 >>>> Charlie >=20 --Apple-Mail-7B5E625C-7CF9-4DFE-867D-DD037E504B6F Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit
If builders at thinking about actually building the plenum style I made, I should add that there is a layer of fiberglass on both sides of the plywood to give it stiffness.  That is needed if you're going to make a plenum with flat sides.

I think I used a dowel between the flat sides too.

Tracy

Sent from my iPad

On Jun 14, 2016, at 20:45, Terry <flyrotary@lancaironline.net> wrote:

Okay, I'll skip the aluminum, but....
Fiberglass....Carbon fiber......could be an alternative over plywood.  As a composite I can form a stronger cigar box at a fraction of the weight.

Terry Adams
N51079
KSCK

On 6/14/2016 2:15 PM, Charlie England wrote:
Tracy's is on the intake/exhaust side of the engine; the intake tubes are a straight shot from bellmouth to engine block. Everyone seems to go for the PL inspired 19" length tubes (or even longer, to find a spot on the plugs side of the engine for the plenum. I wonder if that's part of the reason (along with the drag of 'snake-y' tubes) that some aren't getting the HP they hoped for.

Note: If you build a 'cigar box' style plenum (air box) with flat sides, don't make my mistake. Tracy's box is made of plywood for a reason; I got creative & made mine using aluminum and Tracy pointed out that the pressure pulses will quickly shred it. Rebuilding my plenum is on my 'to do' list. I've got some 6" aluminum tubing that I may use, but the simplest thing is to just build it with plywood.

On 6/14/2016 1:38 PM, William Jepson wrote:
Something to remember an airbox like that must be on the "cold side" of the engine. Don't put it over the exhaust. 
Bill

On Tue, Jun 14, 2016 at 10:13 AM, Luciano, Luis I CIV PEOSUB, PMS404P <flyrotary@lancaironline.net> wrote:
Hahaha... I always heard of Tracy's simple intake manifold but never had seen the actual setup (except for zoomed out shots in Contact mag).  Now I feel better as I move forward with my build :)  Thanks for sharing Charlie!!!

Luis

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
Sent: Tuesday, June 14, 2016 12:27 PM
To: Rotary motors in aircraft
Subject: [Non-DoD Source] [FlyRotary] Re: Mistral

On 6/14/2016 9:52 AM, Tom Mann wrote:
> Any Idea as to where one might find this information?
>
> -----Original Message----- From: Charlie England
> Sent: Tuesday, June 14, 2016 9:43 AM
> To: Rotary motors in aircraft
> Subject: [FlyRotary] Re: Mistral
>
> It's not that hard to make an intake that will make great power. Look
> at Tracy's setup. Might not be aesthetically beautiful to some eyes,
> but to me, function is beauty. I don't know of any N/A 2 rotor that's
> as fast as his -4, or as efficient at lower speeds. And really simple to make.
>
> Charlie

Hope Tracy doesn't mind; here's a shot of the Renesis manifold. I believe that the tubes inside the 'box' were later extended to be near the opposite wall. IIRC, Tracy said that the tubes are ~11" from the face of the block to the end of the bellmouth.

You can see old versions of the RWS website by using the Wayback Machine & picking a date.

Charlie



--Apple-Mail-7B5E625C-7CF9-4DFE-867D-DD037E504B6F--