Paul and Georges Almost done before assembly. I do have the end shaft
to be treaded 22mmX 1.5 for the safety nut and groove one one side to
lock it . Then treated and annealed both shaft at Rockwell 60. I will
try to go at Sun&Fun this Saturday and comeback Sunday. Few photos
for your interest. JEAN PRUDHOMME Looking real Jean. What does it
weigh so far? I won't be at Sun & Fun this year. Too much patent
work. Filing world wide. Paul Lamar Jean I am Pascal from France
searching for a PSRU. Question: where did you find the bell housing
which seems to be die casting made? And where did you get all these
parts? Would be very interested to purchase a full set as you show in
your photos. Since Tracy Crook retired, I really don’t where to find
a planetary psru. If you can help, that would be great. I'm looking
for 2.71 - 2.85 ratio. Thanks Best regards Pascal

Jean

No Help? Is it a secret where you got your parts?

Regards Pascal

The bell housing is stock Mazda. The casting on the front is a
sprint car quick change rear end.

Paul Lamar



Thank you Paul I'll try to figure out on which trade mark car it is
used and try to locate in Europe. Pascal


I don't think they have sprint car racing in Europe. There is a
whole industry here in the US dedicated to small oval tack racing on
dirt and pavement. The power is up to 800 HP and the weight is 1300
pounds or less. There are literately 100's of small oval race tracks
around the US.

It is a reflection of our disposable income as is private aviation
:-)

Also so called live rear axles are not common in cars in Europe. They
are disappearing in the US as well and being replaced by front drive
independent suspension.

Paul Lamar




Paul
Could send me your casting dimension I am working also with needle bearing but
I can use the same housing and I am wondering if yours can be use.
The needle bearing I intend to use is the B-3612 eBAY Torrington they are at $19.40 EACH


JEAN PRUDHOMME


We don't have a casting. I suggest making the housing out of thick wall aluminium tubing.

Read over this stuff. I suggest cutting the splines for the 2.85:1 planet carrier on the end of
this McMaster shaft. It is hard so you may have to send it out ans have it normalized.
After you cut the splines turn it down to 2.26 OD. Then have it hardened and ground to
2.500". See the attached timken engineering stuff. Same goes for Koyo bearings

You can then use the EBAY bearings directly on the shaft.
For the prop flange end use two 3/8 pins 90 degrees to each other like Ross did or use
the extended point set screw trick. I suggest making a static  test rig for the extended point
set screws and apply a 1000 foot pounds of torque. You can use your prop flange
as one part and a short length of tubing for the other part.

Paul Lamar


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