Re: Terry - "Improved" propeller gap design

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Scott Hanson by way of Terry Fritz <teslalist-at-qwest-dot-net>" <huil888-at-surfside-dot-net>

Aric -

The "push nuts" (more correctly "push-on retaining rings" or "stud
receivers") rely on the sharp edges of the item digging into the shaft they
are mounted on. These work fine on shafts or studs of plastic, zinc, brass,
soft steel, etc.

They are of very limited use on hardened steel or tungsten, as the edges
can't dig into the shaft for a mechanical lock, all you end up with is
retention by friction alone (which was the problem with the original
press-fit-in-plastic design).

Regards,
Scott Hanson


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, January 29, 2003 4:28 PM
Subject: RE: Terry - "Improved" propeller gap design


 > Original poster: "Rothman, Aric by way of Terry Fritz
<teslalist-at-qwest-dot-net>" <Aric.Rothman-at-Honeywell-dot-com>
 >
 > If this has not been mentioned already, how about using "push nuts," if
 > that's the proper term, on the tungsten rod?
 > Two push nuts on the rod, one on each side of the hub, should secure the
 > rod rather well, I imagine.
 >
 > By push nut, I mean a piece of spring steel, roughly in the shape of a
 > washer, with angled projections in the central
 > hole which allows the nut to slide freely in one direction, but not in the
 > other.
 >
 > Aric
 >
 >