Here are the hard numbers from various UTM runs we do.

Additional Pages for UTM
UTM: Universal Torsion Machine	The UTM, or Universal Torsion Machine, is a small scale torsion engine designed to answer the oft asked question, "What is the best Torsion Engine configuration?"
Universal Torsion Machine: Torsion Bundles	The UTM has four bundles. Two short bundles, and 2 long bundles. Each bundle was designed to have similar equipment, but there are two sets, each a different length.
Universal Torsion Machine: VSpring Configuration	The V-Spring configuration for UTM models the classic Greek ballista. It was also set up to be able to model Mista Ballista's V spring configuration so we might determine ideal arm at-rest angle and arm length.
Universal Torsion Machine: Results	Here are the hard numbers from various UTM runs we do.
Universal Torsion Machine: Software	The UTM design was originally inspired by a MATLAB program I wrote. This program is able to simulate the geometric efficiency of different configurations. Since it doesn't model the actual effectiveness by measuring load on the bundle, we felt the need to create a physical model that could have the same flexibility.