"Rosine, Steve" wrote:
I'm seriously considering building a PSRU from the sketches on the ACRE web
page. It looks easy to machine and assemble. Before I produce detail
drawings for the machine shop, I'd like to see if there are any additional
design ideas. I've also got a few questions about the design:
1) Seems like there should be an oil seal next to the bearings on
the input shaft, right?
It should be there. Yes the seal is shown.
2) Where should engine oil be dispensed to lube both the front
roller bearing and the planetary?
I had not planned on using engine oil. Half full of auto transmission oil.
If it runs too hot I had planed on using the rotating ring gear
and a scrapper as a pump to circulate the oil through a cooler.
3) Is the input shaft a modification of a C6 part, or made from
scratch?
I think it can be made from something like a Chevy V8 manual transmission
input shaft. If so the clutch disk spline should also be from a Chevy.
It may have to be made from scratch if it does not have enough meat
to accommodate the double ball thrust bearings.
4) What are the dimensioin of an SAE-2 prop flange?
Good question. Would you believe I have not found an OFFICIAL source
for that info. I have the dimensions for a O-470 and a Lyc O-360
flanges. If you can wait a week I will dig those up. The O-470 has
a 4.75 OD flange with a four inch bolt circle and a 2.25 inch
pilot but the exact radius is in question. I will see what I can do
when I get back. Tracy should have those dimensions.
I think the flange dimensions shown are for an SAE 2. I am not sure.
5) Is the sun gear welded to the input shaft or other means of
attachment?
I had envisioned pressing it on with a 30 ton press. Any movement
after that will gall the joint and weld it together :-) It could
also be sweat silver soldered on as there is plenty of area
to take the torque.
6) Has anyone ever built one of these before?
Not to my knowledge.
Does anyone have a scrap C6 gearset they'd be willing to part with?
Steve Rosine steve.rosine@nv.de.ittind.com
Good gear sets are available at you local auto transmission part
supply houses for less than $50. Another good source is buy a
core C6. Usually just the bands and clutches are shot. The gears
seem not to wear.
Cal-Tex... Used and overhauled auto transmission parts.
Rebuilt parts. No core required.
Front planet carrier with 3 pinions $22.00
Rear planet carrier with 4 pinions $22.00
Ring gear front $15.00
Ring gear rear $15.00 to $25.00
Sun gear $12.50
Ask for Heather (She really knows her stuff.)
5923 Kester
Van Nuys CA
91411
(818) 994 9947
You got me at a bad time Steve. If you can wait a week I will have
a lot more time to help. BTW does your CAD program take DXF files?
If so I can send you DXF's on these things.
Paul Lamar
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