X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from smtpout05.prod.mesa1.secureserver.net ([64.202.165.218] verified) by logan.com (CommuniGate Pro SMTP 5.3.5) with SMTP id 4193485 for flyrotary@lancaironline.net; Fri, 02 Apr 2010 12:14:47 -0400 Received-SPF: none receiver=logan.com; client-ip=64.202.165.218; envelope-from=aviator@stinsonvoyager.com Received: (qmail 12415 invoked from network); 2 Apr 2010 16:14:09 -0000 Received: from unknown (76.88.64.229) by smtpout05.prod.mesa1.secureserver.net (64.202.165.218) with ESMTP; 02 Apr 2010 16:14:09 -0000 From: "Bill Monroe" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Tuned lengths Date: Fri, 2 Apr 2010 09:13:46 -0700 Message-ID: <004601cad27f$798d3fa0$6ca7bee0$@com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0047_01CAD244.CD2E67A0" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AcrR8BgXuyITgk9uQZq0yAS06YqRfAAjnihw Content-Language: en-us This is a multi-part message in MIME format. ------=_NextPart_000_0047_01CAD244.CD2E67A0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Al, regardless of how it works, it's beautiful. My understanding is that one advantage to using individual throttles as you did was that it mitigated the effect of pulses between the intakes and tuning became less critical. Where did you get the tubes to weld-up? I'm planning on making a casting myself but it would nice to know alternate sources. From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Al Gietzen Sent: Thursday, April 01, 2010 5:06 PM To: Rotary motors in aircraft Subject: [FlyRotary] Tuned lengths To: Rotary motors in aircraft Subject: [FlyRotary] Re: Tuned lengths Please post drawings/photos/specs...Yvon Some photos of the intake manifold for the 20B are attached. It is 4.5" from flange to flange; the TB flange is at a slight angle to fit my installation; the TB is TWM 3003; 44mm diameter bores. Another builder built his from my drawings and had a couple extra made. At least one is still available. The price is around $1000; I'll have to check. That's a real deal - by the time I had mine fabricated and heat treated it was over $2000. Let me know if anyone is interested. Al ------=_NextPart_000_0047_01CAD244.CD2E67A0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Al, regardless of how it works, it’s = beautiful.

My understanding is that one advantage to using = individual throttles as you did was that it mitigated the effect of pulses between = the intakes and tuning became less critical.

Where did you get the tubes to weld-up?  I’m = planning on making a casting myself but it would nice to know alternate = sources.

 

 

 

From:= Rotary = motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Al = Gietzen
Sent: Thursday, April 01, 2010 5:06 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Tuned lengths

 

To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Tuned lengths

 

=

Please post = drawings/photos/specs...Yvon

 

Some photos of the intake manifold for the 20B are attached. = It is 4.5” from flange to flange; the TB flange is at a slight angle to = fit my installation; the TB is TWM 3003; 44mm diameter = bores.

 

Another builder built his from my drawings and had a couple = extra made.  At least one is still available. The price is around $1000; I’ll have to check. That’s a real deal – by the time I = had mine fabricated and heat treated it was over $2000.  Let me know if = anyone is interested.

 

Al

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