Originally Posted by DocsMachine
The Equalizer's original design (I used to, and hopefully still do somewhere, have a copy of a couple different wireframe CAD drawings of both the original and the production versions) had a vertical on-off valve mounted in the body, similar to the Automag.
Sheridan's board of directors apparently thought- according to the designer- that this was either not user-friendly enough, or possibly would be seen as too close to a 'Mag ripoff, and changed it to having the firing valve (the "on off") mounted down in the frame.
That lengthened the air passages by about a factor of ten, and forced several restrictive right-angle turns. The upshot being that the Equalizer, which should have been Sheridan's 'Mag-killer, would choke at anything above about 4 shots per second- and the trigger pull was so stiff and long (and really, entirely unadjustable) that anything above about five took a trigger finger that looked like Popeye's forearm.
I had a couple Equalizers pass through my hands a couple years ago. I fixed leaks between the frame and body, made new detents on them out of zip-ties, and resold them without playing with them.
I always assumed that the slow recharge time was due to the regulator itself (like on a Rainmaker).