Return-Path: Received: from access.aic-fl.com ([204.49.76.2] verified) by logan.com (CommuniGate Pro SMTP 4.2) with ESMTP id 367943 for flyrotary@lancaironline.net; Tue, 17 Aug 2004 09:04:19 -0400 Received-SPF: none receiver=logan.com; client-ip=204.49.76.2; envelope-from=unicorn@gdsys.net Received: from homep276y68tk5 (unverified [204.49.76.46]) by access.aic-fl.com (Rockliffe SMTPRA 4.5.6) with SMTP id for ; Tue, 17 Aug 2004 08:04:34 -0500 Message-ID: <004c01c4845a$baaf7300$2e4c31cc@homep276y68tk5> From: "Richard" To: "Rotary motors in aircraft" Subject: P-P Surprise Date: Tue, 17 Aug 2004 08:04:26 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0048_01C48430.D0B27730" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 This is a multi-part message in MIME format. ------=_NextPart_000_0048_01C48430.D0B27730 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable In developing the intake system for the one-rotor, I got some surprise. = When I got to the point of running both ports, side and P-P, on one carb = each, I tried to coordinate the cup(close-up butterfly) with the carbs, = there was no impact from the cup at idle or anywhere else up to 3500RPM. = Starting the engine with the cup full open was normal. Naturally, I = removed the cup and the engine is just running fine. Throttle response = with the P-P carb alone is very smooth and solid. Idle speed is now at = 1500RPM with the mixture not optimized yet.=20 So much for the cup in my case only.=20 I what I observed here holds up, the combo port idea may be dead making = the one rotor a more simple and better engine. This also reminded me of the NSU Wankel Spider, which did not have a cup = and was running very fine. Richard Sohn N-2071U unicorn@gdsys.net ------=_NextPart_000_0048_01C48430.D0B27730 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

In developing the intake system for the = one-rotor,=20 I got some surprise. When I got to the point of running both ports, side = and=20 P-P, on one carb each, I tried to coordinate the cup(close-up butterfly) = with=20 the carbs, there was no impact from the cup at idle or anywhere else up = to=20 3500RPM. Starting the engine with the cup full open was=20 normal. Naturally, I removed the cup and the engine is just = running=20 fine. Throttle response with the P-P carb alone is very smooth and = solid. Idle=20 speed is now at 1500RPM with the mixture not optimized yet. =

So much for the cup in my case only. =

I what I observed here holds up, the = combo port=20 idea may be dead making the one rotor a more simple and better=20 engine.

This also reminded me of the NSU Wankel = Spider,=20 which did not have a cup and was running very fine.

Richard Sohn
N-2071U
unicorn@gdsys.net

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