Re:Safe RSG?

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

Original poster: "ebyng by way of Terry Fritz <twftesla-at-uswest-dot-net>" <ebyng-at-netlimit-dot-com>

3400 rpm??
You might want to use a pully or geared system and scale that down a
little....

A 1" thick lexan box for your(and the rest of the streets) safety, maybe?

my 0.02
S
----------------------------------------------
Original Message
From: "Tesla list"<tesla-at-pupman-dot-com>
Subject: Safe RSG?
Date: Wed, 14 Mar 2001 19:01:51 -0700

>Original poster: "Jason Johnson by way of Terry Fritz
<twftesla-at-uswest-dot-net>" <hvjjohnson13-at-hotmail-dot-com>
>
>Well today I had a great idea for an async RSG that I could build w/o
having to
>buy anything and stick together using stuff I had in my garage. It has a
~13"
>long peice of .5" Al square stock as the rotor, on a 1/4 horse 3450rpm
motor.
>It spins up fine and will hit top speed w/o a problem, but to be totally
>honest, this thing scares the crap out of me. It sound like an airplane's
main
>rotor and while it doesn't shake really at all the shaft on the motor is
3/8"
>and that doesn't leave much Al on either side, and it has two 8-32 holes
tapped
>right in the middle at right angles to the shaft (for set screws). I
calced it
>and the ends of this thing are moving at just over 133mph (212kph), which
>didn't seem that fast until I saw it going! How much stress can Al take? I
>don't want this thing to come apart! I have no doubt that if I was in the
wrong
>place if/when this thing came apart I'd have a hole in my chest. I don't
mind
>this thing if I can just build a "blast shield" around this thing and not
worry
>about it coming apart. Also I'm pretty sure that this stuff isn't pure Al,
but
>I don't know what alloy, maybe 6061?
> 
>Jason Johnson
>
>
>
>

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