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Subject: RE: [FlyRotary] Ross Redrive Dimensions
Date: Fri, 19 Mar 2021 07:57:43 +1100
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Le Roux,
                  The pins that hold the prop flange on, are they a =
press fit?  What holds them in?
Next I cannot see what takes the negative thrust?  The prop pull is =
taken by the bearings at the base od the shaft, but then there should be =
also a thrust "taker"  when you cut engine power and shaft  takes =
negative forces??  Any needle thrust bearings at prop end?
Then how do you take movement out of prop shaft?  =20
Is the 6 pin planetry the same dimensions?  Same size sun gear?
All interesting.  I wish you the best.
Neil.
 =20

-----Original Message-----
From: Rotary motors in aircraft <flyrotary@lancaironline.net>=20
Sent: Thursday, March 18, 2021 9:23 PM
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: [FlyRotary] Ross Redrive Dimensions

=EF=BB=BFNeil: 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.


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 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.