[TheForge] Power hammer questions

[Dan Rathburn]

----- Original Message -----
From: "Shannell Sugrue" <sjs@ihug.com.au>
To: <theforge@mailman.qth.net>
Sent: Friday, March 21, 2003 9:00 PM
Subject: Re: [TheForge] Power hammer questions


> Go the Krause method for a low noise air hammer, or put the compressor
> outside the shed and plumb the exhaust outside also.
>You can get a variac (I think thats what they are called) to vary the speed
of an AC motor thus
> varying how hard you hit but also lower BPM,

A variac changes the voltage to the motor and most AC motors don't like low
voltages and get hot and decide to boog down or stop when the voltage gets
to low. You can find speed control setups for AC motors that are designed
for that type of use it only takes $$$$$$$$$$$$$$$$$ or money.

>but why not use a clutch, its
> probably the easiest method and a car differential via the handbrake is a
> great way to do this, I built a JYH using this method, pics on anvilfire,
> the clutch worked pretty well.


Dan Rathburn
Elgin, IL USA