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Tracy.
On another subject, I was looking at your web site and noticed the different Sun gear thrust bearing stages and notice you went from Ball bearing ( failed) to roller bearing - to what appears to be 2 back to back needle bearings with their end and intermediate washers.
Looking at the bearing book, I notice a limit of about 2,800 rpm on needle bearings which give only 5.600 rpm limit.
My question is, wouldn't 3 needle thrust bearings be needed and could you use 2 thrust ball bearings back to back which run at 5,600 rpm each?
I guess it would be way over kill but NSK double direction angular contact thrust ball bearings, run to 9,500 rpm.
Did you consider any of these other options? or was space your over riding factor
George (down under)
Steve: Any reaction from the Dept of Homeland Security to that muffler? :>)
Tracy
On Sun, Jan 18, 2009 at 4:01 PM, Steven Boese <sboese@uwyo.edu> wrote:
Mike,
The length of the cylindrical section is 24 inches. The conical section is
9 inches long.
The dome was made from a Kmart mixing bowl. Some of it is less than 0.032
inches thick but has held up so far.
The cylindrical section was made by a local sheet metal shop with a stove
pipe joint that also has been tack welded in a few places.
I made the conical section, inside parts, heat shield, and mount from the
same sheet material as the cylindrical section. The joint in the conical
section is similar to the stove pipe joint and is also tack welded.
Steve Boese
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