[TheForge] power hammer

Fri Jan 16 18:21:10 2004

When I first read this reply I thought the hand brake would allow a drum to
initiate the differential to spin on the other end.  A disc seems like it
would be more responsive.

My initial thought was the differential would have some serious drag to it
for a 1HP motor.........did it work well or was it sluggish due to this?
Are they running the electric motor into the drive shaft end with a
coupler - then using the differential as the clutch and drive? or do you
need a jack shaft to cut the motor speed to something usable on the output
end of the differential?  A 1750 motor cut to 4:1 ratio speed is still in
the 400 RPM range - so I'm not seeing how they are accomplishing a running
speed unless they slip the brake thru the whole operation?

Ralph
----- Original Message -----
From: "Andy Vida" <[email protected]>
To: <[email protected]>
Sent: Friday, January 16, 2004 12:27 PM
Subject: Re: [TheForge] power hammer

>
>
> Daniel Kretchmar wrote:
> >
> > Bob,
> >      I built my own version of a NC-JYH power hammer from anvilfire.
>
> I remreber seeing that contraption at the 98 conference.
> I thought that was one of the most ingenious uses of junk
> that I have ever seen in my life.  And it seemed to work very
> well.  Using a disk brake as the clutch was brilliant.
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