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
Paul,
Don’t mean to be a pest, but could we just as easily use “caged version”
of your drawn cup needle bearings, because Timken says this version
“provides high speed and maximum lubricant retention capability.” ??
Gene Kahn
Unnecessary. No load on a planetary. 2800 RPM is not high speed.
Paul Lamar
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