From: "Stephen Izett stephen.izett@gmail.com" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] Ross Redrive Dimensions
Date: Sat, 20 Mar 2021 04:50:22 +0800
References: <list-1325533@logan.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
In-Reply-To: <list-1325533@logan.com>
Message-Id: <14E11D3F-D4F2-46EB-AA16-8110E7F9A485@gmail.com>

Understand now.
Thanks Le Roux. hope it goes really well.

Steve Izett

> On 19 Mar 2021, at 11:00 pm, Le Roux Breytenbach =
breytenbachleroux@gmail.com <flyrotary@lancaironline.net> wrote:
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> Steve : The ring gear has 74 teeth and the sun gear, on the input =
shaft, has 34 teeth. 74/34 =3D 2.176 ratio
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> The ratio of 2.176 stays the same with a 6 planetary although the =
planet set is much stronger and has a steel housing that holds the =
planets.
> The 4-pin planetary which the redrives was manufactured earlier days =
has an aluminium body.
> This is the set/up where the planetary is held stationary and the ring =
gear is the output
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> There is now a new version 6 planetary that fits in the 12 lug slots =
which has a steel casing
> Le Roux.
>  File_000.jpeg
>  File_000.jpeg
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> Sent from my iPhone
> Le Roux Breytenbach
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> > On 18 Mar 2021, at 15:57, Stephen Izett stephen.izett@gmail.com =
<flyrotary@lancaironline.net> wrote:
> >
> > =EF=BB=BFHi Le Roux
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>=20
> On Thu, Mar 18, 2021 at 3:57 PM Stephen Izett stephen.izett@gmail.com =
<flyrotary@lancaironline.net> wrote:
> Hi Le Roux
> What ration is the 6 pin you hoping to drop in?
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> Steve Izett=20
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> > On 18 Mar 2021, at 6:22 pm, Le Roux Breytenbach =
breytenbachleroux@gmail.com <flyrotary@lancaironline.net> wrote:
> >=20
> > Neil: I got it wrong the propellor flange and ringgear flange is not =
the same.
> > Can=E2=80=99t figure it out ? how the ringgear side flange is stuck =
to the hollow shaft.Seems to me it has thread that screw in. Somehow it =
must be locked. I did not removed the pilot bearing as there is no need =
to do so as it is still brandnew never been used.
> > The propellor flange has 3 pins that holds it in place after the =
pressfit.
> > The hollow shafts needle bearings ,run over the oil holes in the =
shaft, and there is some holes between them too.
> >=20
> >=20
> > This psru is counter rotating and a 2,17 : 1 ratio.Therefor needs an =
anti - clockwise prop pilotside view. I am planning to put in just a 6 =
pinion planet steel casing planetary=20
> > No other modifications to be done.There is a  6 pin planetary with =
12 lug available to drop into the housing.
> > I believe with the 2  - 44 mm p ports @ 6500 rpm will have =
sufficient Hp for take off and climb turning the prop at 2900 rpm.
> > The at =E2=80=9Ctop of climb =E2=80=9C level out and cruise at 2300 =
prop rpm.
> > <image0.jpeg><image1.jpeg><image2.jpeg>
> >=20
> >=20
> >=20
> > Sent from my iPhone
> > Le Roux Breytenbach--
> > Homepage:  http://www.flyrotary.com/
> > Archive and UnSub:   =
http://mail.lancaironline.net:81/lists/flyrotary/List.html
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>=20
> --
> Homepage:  http://www.flyrotary.com/
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