X-Virus-Scanned: clean according to Sophos on Logan.com From: "Charlie England" Received: from mail-pa0-f52.google.com ([209.85.220.52] verified) by logan.com (CommuniGate Pro SMTP 6.1.10) with ESMTPS id 8731002 for flyrotary@lancaironline.net; Tue, 14 Jun 2016 17:12:43 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.220.52; envelope-from=ceengland7@gmail.com Received: by mail-pa0-f52.google.com with SMTP id b13so731782pat.0 for ; Tue, 14 Jun 2016 14:12:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to; bh=M2igD5CH+NS3wYrz/XA4vPPYvKUoohpztzLI70DtIVM=; b=x4qnAEDKnZ11eBTz8DImy1YQqVbwgThUMCGvedJMDR/MH8tK9sJaxgtnxH9YIl0UJf 5Hj6+LFqy1QFx6v9WxYVeC+9+dGL3h1x6DUYsrIliuI1LOlQCdJDm/jW1hzBlZuP5dxW WdBVfmgiCoVUvG+dhQj1V2z6ez32LWJhUktDwjxnbIRjfrMcxlwcbPdO6qUvIEYT8JyL GkHyemmOjqpwEPvqnP0fgywN7xXkXJOWsige+BSf9iIwe6xDuBdUVgvMPYc/sNqOwYQ6 UCcxSJ3BGmR61+ZpELnEXILQyJ44cw0QwUXWWHOOwxudQRdgTlVK7coyCYgWfTLSLE5q jTNQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to; bh=M2igD5CH+NS3wYrz/XA4vPPYvKUoohpztzLI70DtIVM=; b=NEX+qluipPNHh/TSWVzHGhD9v10UprZh1SvR0wlw2QWMeFQyaNBfT79wBqFH1A3kmS S/lLMSNV7fstQOVG3b9jzsSbVHWl+y6eN5R3RwUEV+POPVVT2kWt0vAxe6EJqrSF3vxB He/KDr4hDG2RLfkO8vdQ08TkQh5CTGLjLqXXNVK67OBGNvXRqW6M3kKVOqHv8XqxAKWU IWR81QNsAg1Sx907wd/ZmyCilW/LXFhTJvURVSbT3zN0e90YBHJLz0AjBtHtIL7+tg18 gRAdk6PaoV4fy7V7iYmRPWFE+Do5STN2vXRXB0RFtu7sJ0+B1S9z4nAJ9woevM7SGkQG 2cXA== X-Gm-Message-State: ALyK8tLTy/cRXNzhpXRcYh2iPlS65WqdIbqBlwpd11+rV6XZcpErgaGVnWCt670cytuGWg== X-Received: by 10.66.73.193 with SMTP id n1mr29726699pav.70.1465938744878; Tue, 14 Jun 2016 14:12:24 -0700 (PDT) Return-Path: Received: from ?IPv6:2602:306:25fa:e5d9:7ca0:fb2b:9488:7de? ([2602:306:25fa:e5d9:7ca0:fb2b:9488:7de]) by smtp.googlemail.com with ESMTPSA id n10sm47585831pax.18.2016.06.14.14.12.23 for (version=TLSv1/SSLv3 cipher=OTHER); Tue, 14 Jun 2016 14:12:24 -0700 (PDT) Subject: Re: [FlyRotary] Re: [Non-DoD Source] [FlyRotary] Re: Mistral To: Rotary motors in aircraft References: Message-ID: Date: Tue, 14 Jun 2016 16:15:15 -0500 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.1.1 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/alternative; boundary="------------5B77332A1CB544C205BF198A" This is a multi-part message in MIME format. --------------5B77332A1CB544C205BF198A Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit 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 > > 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 > > --------------5B77332A1CB544C205BF198A Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit
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


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