X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from p3plsmtpa01-03.prod.phx3.secureserver.net ([72.167.82.83] verified) by logan.com (CommuniGate Pro SMTP 5.3.5) with SMTP id 4193557 for flyrotary@lancaironline.net; Fri, 02 Apr 2010 13:12:00 -0400 Received-SPF: none receiver=logan.com; client-ip=72.167.82.83; envelope-from=aviator@stinsonvoyager.com Received: (qmail 31760 invoked from network); 2 Apr 2010 17:11:23 -0000 Received: from unknown (76.88.64.229) by p3plsmtpa01-03.prod.phx3.secureserver.net (72.167.82.83) with ESMTP; 02 Apr 2010 17:11:23 -0000 From: "Bill Monroe" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: Tuned lengths Date: Fri, 2 Apr 2010 10:11:02 -0700 Message-ID: <005a01cad287$78e67eb0$6ab37c10$@com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_005B_01CAD24C.CC87A6B0" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AcrShX/Lge4OQnv8TN6KXWZ2J5J9cgAAXi8Q Content-Language: en-us This is a multi-part message in MIME format. ------=_NextPart_000_005B_01CAD24C.CC87A6B0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Heh, well, it's a bit more than a hobby. I grew up in a foundry. Now, it's a resource that I have to draw on. From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mike Wills Sent: Friday, April 02, 2010 9:56 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Tuned lengths Bill, I forgot that casting was a hobby of yours. I'd like to redo my intake manifold and would be interested in a casting for the lower (first 90 degree turn) part of the manifold where the ports transition from round to oval. I'm currently using a highly modified (lots of welding, grinding, and JB Weld) RX-7 lower. Lets talk. Mike Wills From: Bill Monroe Sent: Friday, April 02, 2010 9:13 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Tuned lengths 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_005B_01CAD24C.CC87A6B0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Heh, well, it’s a bit more than a hobby.  I = grew up in a foundry.

Now, it’s a resource that I have to draw = on.

 

From:= Rotary = motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mike = Wills
Sent: Friday, April 02, 2010 9:56 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Tuned lengths

 

Bill,

 

I forgot that casting was a hobby of yours. I'd like to redo my intake manifold = and would be interested in a casting for the lower (first 90 degree = turn) part of the manifold where the ports transition from round to oval. I'm = currently using a highly modified (lots of welding, grinding, and JB Weld) RX-7 = lower. Lets talk.

 

Mike = Wills

 <= /o:p>

From: Bill Monroe

Sent: Friday, = April 02, 2010 9:13 AM

Subject: = [FlyRotary] Re: Tuned lengths

 

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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