Doug, Paul

I'd like to learn more about using a taper vs a spline for the prop hub.

Could either of you offer any additional commentary on that?

Thanks
Ken Bauman


On Jan 10, 2006, at 8:48 AM, Rotary Engine wrote:

snips.............

We wouldn't need a split case if a hardened hollow drive shaft went to  a
taper on the front and a tapered hub or prop plate was held there with  a
large nut. We would be back to using a thrust bearing in the vicinity  of the
planetary connection plate to resist the thrust of the prop but side  loads
could still be handled through split sleeves or ball bearings. The  case once
more becomes  pipe like and the innards are slipped in from behind.

Below are a few weird cases I have left from the RX-4 semi automatic

Doug in Japan


Been there done that Doug.
The trick is to make the shaft big enough so it slips in the case
with out a flange. However where are you going to get plain bearing
shells big enough if you do away with the needles? We need plain
bearings to get oil to the CS prop.

Make a 3D. I know you have Rhino :)

Paul Lamar ...No rotor no motor.

Doug, Paul

I'd like to learn more about using a taper vs a spline for the prop hub.

Could either of you offer any additional commentary on that?

Thanks
Ken Bauman

Lots of engineering stuff on tapers from Marks Mechanical Engineering Handbook.

The famous taper is the one that holds the flywheel on the 13B e-shaft.
Also the VW.

It is notoriously difficult to remove the 13B flywheel.
Must be smacked hard with a ten pound minimum sledge hammer :)

Also parts of the 3 rotor e-shaft are held together with a taper.

The classic example is the taper in the tail shaft of a lathe.

Paul Lamar ...No rotor no motor.

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