X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from access.aic-fl.com ([204.49.76.2] verified) by logan.com (CommuniGate Pro SMTP 5.0.4) with ESMTP id 886627 for flyrotary@lancaironline.net; Sat, 17 Dec 2005 18:40:44 -0500 Received-SPF: none receiver=logan.com; client-ip=204.49.76.2; envelope-from=unicorn@gdsys.net Received: from b9k4u9 (unverified [204.49.76.29]) by access.aic-fl.com (Rockliffe SMTPRA 4.5.6) with SMTP id for ; Sat, 17 Dec 2005 17:38:32 -0600 Message-ID: <001301c60374$b53ea8b0$1d4c31cc@b9k4u9> From: "Richard Sohn" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] 90-91 oil injection pump Date: Sat, 17 Dec 2005 17:44:36 -0800 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0010_01C60331.8C007980" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0010_01C60331.8C007980 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Monty let me try to explain it in general terms. Unfortunately, I do not = have any detailed pictures. The pump is working on the positive displacement principle. It has a = piston-cylinder combination with in-out port control. The port sequence = is achieved by rotating the piston in such a way that the intake is open = on the way down, and the outlet is open on the way up. The stepper motor = controls the stroke for more or less pumping. Here are the physicals. The drive shaft turns the piston through a 1:1 = worm-angle gear. The piston has a wedge type cut out on the bottom side = which is sitting on a cross pin, spring loaded. When the piston turns, = it moves up and down, in and out from the pin. I do not know exactly how = the control pin is hooked to the piston. I am at this moment making a replacement for the stepper motor, to do = what you described. I believe the pin is at maximum when it is pushed = in, however, I will have a test run on the pump with my adjuster = shortly, and we will know for sure. I have the same adjustment gadget, in principle, for the RENESIS pump, = ready to sell. Hope this helps. Richard Sohn N-2071U ----- Original Message -----=20 From: Monty Roberts=20 To: Rotary motors in aircraft=20 Sent: Saturday, December 17, 2005 12:02 PM Subject: [FlyRotary] 90-91 oil injection pump Would somebody out there who is more knowledgeable than me please = educate me on the operation of this pump? There is a plunger controlled by a stepper motor. Then there is the = thingy that spins. Then there is some other thingy that moves in and = out.=20 Which thingy does the pumping and which position is max oil flow. = Plunger in (towards the motor) or plunger out (away from the motor) my = plan is to just fix it in the max oil setting and use 2 cycle oil. Or = perhaps use a set screw to adjust it until the oil flow/fuel flow is the = same as you guys running premix. I will be replacing the nylon crap with = hard lines. Monty P.S. Thingy is a technical term. If you prefer substitute dumaflatchie = or thingamabob. ------=_NextPart_000_0010_01C60331.8C007980 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Monty let me try to explain it in = general terms.=20 Unfortunately, I do not have any detailed pictures.
The pump is working on the positive = displacement=20 principle. It has a piston-cylinder combination with in-out port = control. The=20 port sequence is achieved by rotating the piston in such a way that the = intake=20 is open on the way down, and the outlet is open on the way up. The = stepper motor=20 controls the stroke for more or less pumping.
Here are the physicals. The drive shaft = turns the=20 piston through a 1:1 worm-angle gear. The piston has a wedge type cut = out on the=20 bottom side which is sitting on a cross pin, spring loaded. When the = piston=20 turns, it moves up and down, in and out from the pin. I do not know = exactly how=20 the control pin is hooked to the piston.
 
I am at this moment making a = replacement for the=20 stepper motor, to do what you described. I believe the pin is at maximum = when it=20 is pushed in, however, I will have a test run on the pump with my = adjuster=20 shortly, and we will know for sure.
 
I have the same adjustment gadget, in = principle,=20 for the RENESIS pump, ready to sell.
 
Hope this helps.
 
Richard Sohn
N-2071U
 
 
----- Original Message -----
From:=20 Monty=20 Roberts
Sent: Saturday, December 17, = 2005 12:02=20 PM
Subject: [FlyRotary] 90-91 oil = injection=20 pump

Would somebody out there who is more=20 knowledgeable than me please educate me on the operation of this=20 pump?
 
There is a plunger controlled by a = stepper motor.=20 Then there is the thingy that spins. Then there is some other thingy = that=20 moves in and out.
 
Which thingy does the pumping and = which position=20 is max oil flow. Plunger in (towards the motor) or plunger out (away = from the=20 motor) my plan is to just fix it in the max oil setting and use 2 = cycle oil.=20 Or perhaps use a set screw to adjust it until the oil flow/fuel flow = is the=20 same as you guys running premix. I will be replacing the nylon = crap with=20 hard lines.
 
Monty
 
P.S. Thingy is a technical term. If = you prefer=20 substitute dumaflatchie or = thingamabob.
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