X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail19.syd.optusnet.com.au ([211.29.132.200] verified) by logan.com (CommuniGate Pro SMTP 5.0.6) with ESMTPS id 915172 for flyrotary@lancaironline.net; Fri, 06 Jan 2006 05:16:06 -0500 Received-SPF: none receiver=logan.com; client-ip=211.29.132.200; envelope-from=lendich@optusnet.com.au Received: from george (d220-237-224-130.dsl.nsw.optusnet.com.au [220.237.224.130]) by mail19.syd.optusnet.com.au (8.12.11/8.12.11) with SMTP id k06AFErn011662 for ; Fri, 6 Jan 2006 21:15:17 +1100 Message-ID: <005d01c612aa$171b8e60$82e0eddc@george> From: "george lendich" To: "Rotary motors in aircraft" Subject: Fw: [FlyRotary] Re: Dodge vs Ford Date: Fri, 6 Jan 2006 20:15:15 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_005A_01C612FD.E8259200" 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_005A_01C612FD.E8259200 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable [FlyRotary] Re: Dodge vs Ford Ken, Some additional info! I look at the planetary as I look at a external toothed gear engaged to = a drive gear. The smaller drive gear has to travel ( with the E4D) 2.85 times further = than the larger gear ( the larger gear has 2.85 times additional teeth). The planetary gears ( in my mind ) merely transfers the loads. Their not = involved with varying the Ratio! No matter how it's used in a Vehicle/ Truck, we will use it the same as = we use the other planetaries, so the assessment is the same as the other = planetaries. So I'm figuring that the ring gear must be about 84 for the ring gear = and about 38 for the sun gear e.g. 84/ 38 =3D 2.21 +1 =3D3.21 If you can give me the tooth count we can evaluate from there - no = pressure and no confusion. George ( down under) Ken, The ratio is ring gear tooth (numbers) divided by sun gear teeth( = numbers). If drive is taken out of the planet (turning RH) =3D A divided by B =3D = 2.21+ 1 =3D 3.21 If drive is taken out of the ring gear ( turning LH) =3D A divided by B = =3D 3.21 EG the E4D is 78 toothed Ring gear divided by the 42 toothed sun gear = =3D1.85:1+1 =3D 2.85:1 and the 2.17 is a LH turning planetary with ring gear held can't = remember the tooth count. It doesn't matter 'what drives what' in the Truck - just count the = teeth. George ( down under) Ok I was wrong on that one, on the trucks the sun gear is held solid to = the case, the power is put into the planet and the power is taken off = the ring gear, now what the hell ratio that works out to be I don't know = as I am confused. I would like to add that in the truck the planet is held solid to = the case, the power in is put into the sun gear and the power out is = taken from the ring gear so the ratio comes out to 2.21 rather than 3.21 = as I am using it. The Dodge overdrive is is a 3.21 and it comes from a 518 and 618 = transmission, is that the gear use you were asking about ?? Ken I am not familiar with the Dodge transmission but an overdrive = gear with a ratio of 3.17 : 1 is astounding! Every other OD gear I've = come across has a ratio something like .707 to 1. Are you sure about = that gear's use? I'm always up for learning a new wrinkle. Tracy ------=_NextPart_000_005A_01C612FD.E8259200 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable [FlyRotary] Re: Dodge vs Ford
 
Ken,
Some additional info!
 
I look at the planetary as I look at a = external=20 toothed gear engaged to a drive gear.
The smaller drive gear has to = travel (=20 with the E4D)  2.85 times further than the larger gear ( the = larger=20 gear has 2.85 times additional teeth).
 
The planetary gears ( in my mind ) = merely transfers=20 the loads. Their not involved with varying the Ratio!
 
No matter how it's used in a Vehicle/ = Truck,=20 we will use it the same as we use the other planetaries, so the = assessment=20 is the same as the other planetaries.
 
So I'm figuring that the ring gear must = be about 84=20 for the ring gear and about 38 for the sun gear e.g.  84/ 38 =3D = 2.21 +1=20 =3D3.21
 
If you can give me the tooth count we = can evaluate=20 from there - no pressure and no confusion.
George ( down under)
 
 
 
 
Ken,
The ratio is ring gear tooth = (numbers) divided=20 by sun gear teeth( numbers).
If  drive is taken out of the = planet (turning=20 RH) =3D A divided by B =3D 2.21+ 1 =3D 3.21
If drive is taken out of the ring gear = ( turning=20 LH) =3D A divided by B =3D 3.21
 
EG the E4D is 78 toothed Ring gear = divided by the=20 42 toothed sun gear =3D1.85:1+1 =3D 2.85:1
and the 2.17  is a LH turning = planetary=20 with ring gear held can't remember the tooth count.
It doesn't matter 'what drives what' in = the Truck -=20 just count the teeth.
George ( down under)
 
Ok I was wrong on that one, on the trucks the = sun gear=20 is held solid to the case, the power is put into the planet and the = power is=20 taken off the ring gear, now what the hell ratio that works out to be I = don't=20 know as I am confused.



   = I would=20 like to add that in the truck the planet is held solid to the case, = the=20 power in is put into the sun gear and the power out is taken from = the ring=20 gear so the ratio comes out to 2.21 rather than 3.21 as I am using=20 it.



   = The Dodge=20 overdrive is is a 3.21 and it comes from a 518 and 618 transmission, = is that=20 the gear use you were asking about ??
 
 =20 Ken




 
I am not familiar with the Dodge = transmission but an overdrive gear with a ratio of 3.17 : 1 is=20 astounding!  Every other OD gear I've come across has a ratio = something like .707 to 1.   Are you sure about that = gear's=20 use?  I'm always up for learning a new wrinkle.
 
Tracy

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