Return-Path: Received: from [24.25.9.103] (HELO ms-smtp-04-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.2b6) with ESMTP id 241356 for flyrotary@lancaironline.net; Fri, 02 Jul 2004 22:55:24 -0400 Received: from EDWARD (clt25-78-058.carolina.rr.com [24.25.78.58]) by ms-smtp-04-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id i632sLVw003668 for ; Fri, 2 Jul 2004 22:54:22 -0400 (EDT) Message-ID: <001101c460a9$0c7a2ed0$2402a8c0@EDWARD> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: EC2 programming Date: Fri, 2 Jul 2004 22:54:24 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000E_01C46087.8531C760" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1409 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_000E_01C46087.8531C760 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MessageWell, that is one of the reason you frequently find the BIG flow = injectors (say for racing) are of the Peak and Hold type. Using a large = flow saturation type would be a bear to get a good idle. I happen to = use the peak and hold Mazda injectors myself and have no problem with = idle. Somebody take away Rusty's motorcycle helmet. Ed Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC ----- Original Message -----=20 From: Russell Duffy=20 To: Rotary motors in aircraft=20 Sent: Friday, July 02, 2004 10:33 PM Subject: [FlyRotary] Re: EC2 programming According to MSD the Satuation types take approx 2 milliseconds to = open whereas the Peak and hold only take 1.5 milliseconds.=20 I've always wondered if this wasn't the key to why some people get = better idle than others. I recently changed my primaries from 550 = Saturation type, to 460 saturation type, and didn't see any difference = in idle. I wonder if a set of 460 peak and hold injectors, with a = minimal size resistor (more punch, but still within the driver's current = limit) wouldn't work better. =20 Rusty (somebody stop me from buying motorcycles!) ------=_NextPart_000_000E_01C46087.8531C760 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
Well, that is one of the reason you = frequently find=20 the BIG flow injectors (say for racing) are of the Peak and Hold = type. =20 Using a large flow saturation type would be a bear to get a good = idle.  I=20 happen to use the peak and hold Mazda injectors myself and have no = problem with=20 idle.
 
Somebody take away Rusty's motorcycle=20 helmet.
 
Ed
 
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message -----
From:=20 Russell=20 Duffy
Sent: Friday, July 02, 2004 = 10:33=20 PM
Subject: [FlyRotary] Re: EC2=20 programming

According to MSD the Satuation = types take=20 approx 2 milliseconds to open whereas the Peak and hold only take 1.5=20 milliseconds. 
 
I've always wondered if this wasn't the = key to why=20 some people get better idle than others.  I recently changed my = primaries=20 from 550 Saturation type, to 460 saturation type, and didn't see any=20 difference in idle.  I wonder if a set of 460 peak and hold=20 injectors, with a minimal size resistor (more punch, but = still=20 within the driver's current limit) wouldn't work=20 better.  
 
Rusty (somebody stop me from buying=20 = motorcycles!) 
= ------=_NextPart_000_000E_01C46087.8531C760--