RE: RSG rotor mount

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

Original poster: "David Dean by way of Terry Fritz <twftesla-at-uswest-dot-net>" <deano-at-corridor-dot-net>

Hi Steve,

I used a pulley from an air compressor. It is a flat belt pulley, well
actually there are seven ribs in a 7/8 " wide pulley. The pulley was cast
iron and had quite a bit of run out. It faced up nicely in the lathe. There
is a 5/8" shaft on the motor and the hub is mounted so that 3/4" of the
shaft sticks out through a 5/8" center hole on the disk. There are three
holes drilled 120 degrees apart in both the hub and the disk. The holes in
the disk are tapped 5/16-18 and three 5/16 grade 5 bolts with flat washers
are used to hold the disk to the hub. It works great.

later
deano

> -----Original Message-----
> From: Tesla list [mailto:tesla-at-pupman-dot-com]
> Sent: Thursday, February 01, 2001 9:17 AM
> To: tesla-at-pupman-dot-com
> Subject: RSG rotor mount
>
>
> Original poster: "Steve White by way of Terry Fritz
> <twftesla-at-uswest-dot-net>" <slwhite-at-zeus.ia-dot-net>
>
> I am currently building a 3600 RPM RSG. The rotor is 10"
> diameter, 1/2" thick
> G10. I am currently using an arbor to attach the rotor to the
> motor shaft. Due
> the imprecision of the arbor face, the rotor still has about 1 mm
> of runout at
> the edge. I am also somewhat uncomfortable using an arbor at 3600
> RPM with a
> 10" diameter 1/2" thick G10 rotor. My question is this. Does
> anyone know of a
> suitable device for mounting the rotor to the motor shaft? A
> pulley or spur
> gear with a flat face come to mind. I am thinking of buying a
> spur gear from
> McMaster-Carr for this purpose. It is quite expensive (about $40). I am
> assuming that the gear face is flat. If not, I could have a
> machine shop true
> it up. Does anyone have any better ideas? Any suggestions appreciated.
>
>
>