by Conor5 » Thu Dec 08, 2011 9:46 pm
I'm not sure what "OLD Winchargers" refers to. Back in 1976, I had to climb a 100' tower, that had a 24V "Wincharger" dangling by 1 bolt. It could have broken loose and taken me out. What I found was, the "Airbrakes" that Wincharger used, had worn completey out, and the controlling rods had pulled through the mounts on the brake shoes. These are the BLADE actuated brake shoes.
The drum brake had been pulled on so tight, it actually wore out the lining and wore through the metal drum, until IT became ineffective. This was the normal 5'+ one piece blade. It had the 222 shape. There was NO twist toward the ends of the blade tips. I also had to replace 2 other blades, on other machines. these were all 12 or 24 volt machines. We sold both voltages.
This tells me that the blade speed CAN be over what is estimated and will run away, so to speak. I believe the only REAL way to control runaway, is, a blade feathering "Governing" hub, if these blades are used.
I'm on the verge of building such a governor, and will start a new thread about it. It's NOT as difficult as everyone thinks.