X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ms-smtp-02.southeast.rr.com ([24.25.9.101] verified) by logan.com (CommuniGate Pro SMTP 5.1.11) with ESMTP id 2210460 for flyrotary@lancaironline.net; Sat, 28 Jul 2007 18:16:06 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.101; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-103-061.carolina.res.rr.com [24.74.103.61]) by ms-smtp-02.southeast.rr.com (8.13.6/8.13.6) with SMTP id l6SLU8Js001490 for ; Sat, 28 Jul 2007 17:30:09 -0400 (EDT) Message-ID: <003901c7d15e$8d3acb00$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Gear mesh area? Was [FlyRotary] Re: Gear redrives.com Date: Sat, 28 Jul 2007 17:30:42 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0036_01C7D13D.05E8C6A0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3138 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0036_01C7D13D.05E8C6A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Well, Tracy, its sort of like flying 400 hours with a "Plugs Up" = installation - can't possibly work - the "experts" have said so {:>). It continues to amaze me (as it does you) how people can just accept = something sprouted out by some little (or unknown) self-styled expert = without attempt to ascertain whether there are any independent sources/ = facts supporting that position. =20 As several individuals have pointed out most high powered (1500+) = engines of WWII had planetary gear boxes not to mention the dozens of = different turboprop engines. But, I guess all of that evidence does = not out-weigh the opinions of "experts". =20 I have not done this but it would be interesting to calculate the teeth = mesh area of one of the spur gear PSRU and then compare it to the area = of the six pinion sun and planetary gear area engaged to transfer a = similar amount of power. I could be wrong, but my gut feel is that the = sun and planetary probably have more metal to metal contact area for = transferring power than the Sun gear.=20 But, like I said - just a hunch, would be interesting to know. Anybody = have a quick answer?? =20 Ed ----- Original Message -----=20 From: Tracy Crook=20 To: Rotary motors in aircraft=20 Sent: Saturday, July 28, 2007 1:47 PM Subject: [FlyRotary] Re: Gear redrives.com Thought I'd see what else I was doing wrong so took a fresh look at = the geareddrives.com website. The kiss of death for a set of gears is in not using the proper = lubrication. Separate lubrication systems are required for safety and = for proper engine and gear function. Sharing engine oil with the PSRU is = asking for engine and/or PSRU failure in advance.=20 There is absolutely nothing I'm doing right! But the company does not look like it is for sale though. But = Gershwinder (Sp?) drive company is for sale now. Their chain drives = were among the best I've seen.=20 Tracy ------=_NextPart_000_0036_01C7D13D.05E8C6A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Well, Tracy, its sort of like flying 400 = hours with=20 a "Plugs Up" installation - can't possibly work - the "experts" have = said so=20 {:>).

It continues to amaze me (as it does you) = how=20 people can just accept something sprouted out by some little (or = unknown)=20 self-styled expert without attempt to ascertain whether = there are=20 any independent sources/ facts supporting that = position. =20

As several individuals have pointed out most = high powered=20 (1500+) engines of WWII had planetary gear boxes not to mention the = dozens of=20 different turboprop engines. But, I guess all of that = evidence does=20 not out-weigh the opinions of "experts".

I have not done this but it would = be interesting to=20 calculate the teeth mesh area of one of the spur gear PSRU and then = compare it=20 to the area of the six pinion sun and planetary gear area engaged = to=20 transfer a similar amount of power. I could be wrong, but my = gut feel=20 is that the sun and planetary probably have more metal to metal contact = area for=20 transferring power than the Sun gear.

But, like I said - just a hunch, would be=20 interesting to know. Anybody have a quick answer??

----- Original Message -----
From:=20 Tracy=20 Crook
To: Rotary motors in = aircraft

Sent: Saturday, July 28, 2007 = 1:47=20 PM

Subject: [FlyRotary] Re: Gear=20 redrives.com

Thought I'd see what else I was doing wrong so took a fresh look = at the=20 geareddrives.com = website.

The kiss of death for a set of gears is in = not using=20 the proper lubrication. Separate lubrication systems are = required for=20 safety and for proper engine and gear function. Sharing engine oil = with the=20 PSRU is asking for engine and/or PSRU failure in advance. =

There is absolutely nothing I'm doing=20 right!

But the company does not look like it is for sale though. = But=20 Gershwinder (Sp?) drive company is for sale now. Their chain = drives were=20 among the best I've seen.

Tracy

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