Paul
   There is the alternate design with ball and roller bearings,


   Jean Prudhomme



Jean, I am a little concerned about using a single tapered bearing. A
radial load creates a thrust component in the bearing. This is usually
countered by an oposing tapered bearing.   Some way of establishing the
preload or clearance on the bearings will also be needed and a bushing
or bearing where the propshaft fits into the input shaft because there
is a 2.85 to 1 speed difference. The retaining nut holding the deep
groove ball bearing spacer and gear could use a locking device such as a
"W" washer with a tab into a recess in the shaft and a notched spanner nut.
       The journal bearing design looks to be better from a load
bearing capacity, the ability to be a tractor or pusher installation and
provisions for separating lubrication oil pressure and the higher prop
control pressure. The bearings seem to be further back from the prop
flange than necessary as reguards overhung load. This may not be a
concern due to the large diameter of the propshaft.


george grimes