That is looking a lot better Jean.

  Make sure the prop flange is the same as one of
  these SAE standards. The big one is for wood props
  and the smaller one for CS props.

  Paul Lamar


  I PAUL
  I FOLLOW YOUR RECOMMENDATION TO DESIGN WITH NEEDLE BEARINGS
  AND I CAME UP PRETTY GOOD BUT I NEED YOU TO LOOK AT IT AND
  COME BACK WITH YOUR RECOMMENDATIONS.
  I AM SENDING YOU 3 2SHEETS WITH DIMENSIONS


  Jean Prudhomme

  If your drawing program can export IGES or AutoCad DXF files send me those
  instead so I can import them into Rhino. STP (STEP) files also work.

  It is best to send the individual part drawings with dimensions rather
  than dimensions on the complete assembly. Too confusing.

  I don't need the part drawings on the Ford planetary parts
  as I have those in Rhino dwgs already.

  Once you have it in Rhino you don't need to send dimension
  at all. All you need send is the Rhino 3DM file.

  Paul Lamar


 Paul all the file are in IGES and i try to transfer to george Grimes
 and he can open it.

 I still working on the full design  and i added a snap ring on the
 front to hold the front seal,i will have to use 2 check valves to
 prevent the high pressure to interfer with the low oil pressure.
 I should start to design the separate parts soon and i will forward to you



 Jean Prudhomme


 Here is a preliminary Rhino rendering. It will take a lot more
 work. The prop flange spline may not be accurate. How many
 spline teeth are you planning on Jean? It is also not clear how
 you are going to retain the flange on the spline.


 Paul Lamar

Paul,  It looks to me that the propshaft to planetary carrier splines are
not intended to cary the thrust load. There is a flange on the planetary end
of the prop shaft with the thrust bearing between that flange and the sprint
car housing. The planetary is trapped between this thrust bearing flange and
a second thrust bearing behind the planetary carrier.

george grimes


I Like the splines on the shaft and prop flange.
More expensive but probably worth it.
It allows the other end of the prop shaft to have
a welded on or totally machined flange  that
simply bolts to the planet carrier or becomes
half of the planet carrier

 Here is a low cost and light weight way of
handling the trust load going down the prop shaft using
stacked needle thrust bearings.

My 3D's are not done yet so this will be incorporated into
my suggested final design.

BTW I have second thoughts about the mini sprint car bell.
The bell part is actually a disadvantage for several reasons
A. is Jeffs adapter plate will have to be modified.
B. a complex part must be machined to hold the ring gear
stationary.

It is probably easier to make something out of thick wall
aluminum tube similar to this dwg except needles instead
of thin section tapered roller bearings. Thin section tapered
roller bearings are sensitive to housing expansion and contraction
not to mention they are very expensive.

The diagonal tube bracing  shown is optional.

The design is interchangeable with Tracy's box.

Paul Lamar