Return-Path: Received: from out004.verizon.net ([206.46.170.142] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 3065901 for flyrotary@lancaironline.net; Sat, 06 Mar 2004 00:29:17 -0500 Received: from netzero.net ([4.12.145.173]) by out004.verizon.net (InterMail vM.5.01.06.06 201-253-122-130-106-20030910) with ESMTP id <20040306052916.LWSB11989.out004.verizon.net@netzero.net> for ; Fri, 5 Mar 2004 23:29:16 -0600 Message-ID: <404961A3.4060504@netzero.net> Date: Sat, 06 Mar 2004 00:29:07 -0500 From: Finn Lassen User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax; PROMO) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: It Runs !!! References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------060009000204090808040607" X-Authentication-Info: Submitted using SMTP AUTH at out004.verizon.net from [4.12.145.173] at Fri, 5 Mar 2004 23:29:16 -0600 This is a multi-part message in MIME format. --------------060009000204090808040607 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit I don't remember if Paul is using the high or the low impedance injectors, but if they are the low impedance type, I'm not sure it's a good idea to put the full 12 volts across it, as you suggest. 12 volts over 2 ohms is 6 amps. 12 * 6 = 72 watts. I'm not sure the injector can handle that. Best use a resistor in series. Might be OK for a brief moment (less than a second)... My injectors clicked with just a used 6V lantern battery (current less than one amp). Finn Russell Duffy wrote: > I was thinking that if I disconnect the fuel pump wire so that the > engine cannor start, possibly turning it over and listening to the > injectors would tell me if they are clicking? Or might this be too > diffucult to hear? Thanks for any and all suggestions on how to check > this out. Paul Conner > > > Hi Paul, > > If you want to test the operation of an injector (to see if it's > stuck), just unplug the connector, put 12V on one terminal of the > injector, and touch a grounded wire to the other terminal. You'll > hear it click, unless it's stuck. > > > Cheers, > Rusty > > > --------------060009000204090808040607 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit I don't remember if Paul is using the high or the low impedance injectors, but if they are the low impedance type, I'm not sure it's a good idea to put the full 12 volts across it, as you suggest. 12 volts over 2 ohms is 6 amps.
12 * 6 = 72 watts. I'm not sure the injector can handle that. Best use a resistor in series.

Might be OK for a brief moment (less than a second)...

My injectors clicked with just a used 6V lantern battery (current less than one amp).

Finn

Russell Duffy wrote:

Message
I was thinking that if I disconnect the fuel pump wire so that the engine cannor start, possibly turning it over and listening to the injectors would tell me if they are clicking? Or might this be too diffucult to hear? Thanks for any and all suggestions on how to check this out. Paul Conner

Hi Paul,

If you want to test the operation of an injector (to see if it's stuck), just unplug the connector, put 12V on one terminal of the injector, and touch a grounded wire to the other terminal. You'll hear it click, unless it's stuck.

Cheers,

Rusty

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