NASA Sprockets

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Posted by Joe Johnson.   [PICTURE: SAME | NEW | HELP]


Engineer on team #47, Chief Delphi, from Pontiac Central High School and Delphi Automotive Systems.

Posted on 2/6/2000 6:33 PM MST


In Reply to: Can't find 'the NEW K1' posted by Joe Johnson on 2/6/2000 5:34 PM MST:



Actually, I mis-typed. I meant a New K3.

Actually, I CAN find a New K3 in update #1 but it doesn't really impact ordering custom gears & sprockets:

K3. If a part appears on the Additional Hardware List, it does not need to be
purchased from Small Parts, Inc. (SPI) and does not count against the $425 limit
on parts from SPI.


This doesn't really address ordering non-Off-the-Shelf gears & sprockets.

If NASA made some sprockets from legal kit material (Stuff from Small Parts Inc, Stuff from the green & gray tubs, or stuff from the additional hardware list -- which by the way includes off-the-shelf sprockets, of course), then these would be legal.

Perhaps I am missing something, but I think that this is exactly what I wrote in my original reply to this thread.

By the way, what are these sprockets?

I have often thought that a sprocket with a taped hole in the middle (3/8-24 as I recall) that had a hub thickness that was just a bit wider than the length of the drill shaft would be an excellent thing for many rookie teams. They could just screw the sprocket on the shaft and use a washer and the left handed screw from Bosch Service Parts (Bosch Part Number -- at least as of 1997 when we purchased these screws -- 3603430505) to lock the sprocket to the shaft.

This would probably work well for many teams. There is still the problem of securely mounting the drill housing because this method depends on the drill itself for all the bearings for the drive shaft (not a good idea in my opinion), but this is probably a better method to attach to the drill's output shaft than most rookie teams come up with so how can I complain?

Enough already ;-)

Joe J.