[TheForge] Power hammer questions Shannell

Fri Mar 21 22:56:01 2003

Shannell, I was looking at those JYH's just a few days ago thinking hmmm
quick and dirty but I did not understand something. Those rear ends, are
they of the positrac or limited slip variety? Secondly how is the drive
engaged and disengaged via the use of a brake on one end? As I understand
these limited slip set ups, when they are being driven both wheels are
turning and by applying brake to one end the drive power is transferred to
the non braking end. How then is the hammer stopped? Releasing the brake
then simply would allow both ends to turn together again. What am I missing
here? Also, how is the speed controlled?

Ian....

----- Original Message -----
From: "Shannell Sugrue" <[email protected]>
To: <[email protected]>
Sent: Friday, March 21, 2003 7:00 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, 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.

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