Tensioning frac rig with swept back spreaders

[Bob Pingel]

Tension depend on lots of variables.

Talking tensions in general, you want to tension longer wires more than shorter ones, because long wires stretch more than short ones -- more specifically, as a starting point, on shorter wires you want 10-12% break strength, and on longer ones you want 12-15%. 3/16" has a BSD of 4400#, so if you cranked everything to 600# you likely have some OK, and some too tight, but maybe not.

The whole idea is to keep the mast upright and in column under various conditions. You have a complex set of members in tension and compression, and you can't tune that system with a simple "crank it XX pounds" statement.

You really need Brion's tuning video, it will get you going, and then you'll likely need to post some specific questions about your rig.

Bob