Re: Need help with Dyno design

--- In CAD_CAM_EDM_DRO@yahoogroups.com, R Rogers <rogersmach@y...>
wrote:

> Wally, Wouldn't it be easier to turn a 2"long X 2.125 dia spool in

the lathe with a 16 tpi groove on its diameter. Mount spool on motor
shaft, wind a cable on the spool with different weights suspended
from it? Steel is .282 pounds per cubic inch to calculate the
standards. Run different Rpm's and distances to see where it skips.
Could run that Eckstein's DRO system with an encoder mounted on shaft
to verify. Or a simple reference mark from shaft to motor body.

>
> Ron

I was thinking of a simple home version. A motor mount, a pulley as
you described, possibly a 1" screw as the spool, and a pulley on the
ceiling with a rope to a bucket.

add water, nuts and bolts, or whatever.

you can mark the height that the ramping ends and run tests on that.

Since most steppers fail entirly when missing steps, it would be
interesting to see.

I also though about adding washers on a string so as the bucket kept
moving it would have weights added automatically.

Dave