|
Re: Extending a climber's arm
Our main stage is just a loop of chain with a drive and idler sprocket on the bottom stage, where part of the chain is fixed to the second stage. It's then rigged with more chain so the last stage extends at the same time.
Our only arm that used plastic bearings, and used bungee to extend (power retract for hanging) was 2010. And honestly this thing was such a huge pain in the butt
|