Spreader plates

I'm pretty sure Izenour did UMN Popejoy as well as Marcus Center, Orono, and several or many others with this shell design.
 
Sketch of the Marcus Centers' system.
 

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I am familiar with Rick's products. The client intends to motorize electrics and shell so potential run-away of those are addressed.

I do wonder with cost of motorizing always dropping if adding options to manual counterweight makes sense. Perhaps in existing there could be some benefit.

Lot more people injured and killed by falling off stage though than from rigging of any kind - by a larger factor I believe - just to keep things in perspective.
 
That is a beasty size hoist going in, specifically for the shells at circa 4000lbs - Will there need to be lineset adjustment for surrounding sets?

In reference to new manual options - I think it comes down to a teaching preference of the program. I think for electric sets specifically the arbor trap is a nice new option specifically in a roadhouse setting as it adds to a peace of mind that is rarely available in such venues.
 
That is a beasty size hoist going in, specifically for the shells at circa 4000lbs - Will there need to be lineset adjustment for surrounding sets?

In reference to new manual options - I think it comes down to a teaching preference of the program. I think for electric sets specifically the arbor trap is a nice new option specifically in a roadhouse setting as it adds to a peace of mind that is rarely available in such venues.

Counterweight assist. Drop Clancy Power-Assists equal in the rigging pit. Shells will be balanced, so essentially no load other than inertia and friction and a little cable weight; electrics ought to be fine if counterweighted to be 750 or so pounds arbor heavy when empty. The Power-Assist handles 1000 pounds either side of balanced.
 

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