That is correct as DJ put it.
In this case, the E.P. has a frame mounted coil and plunger handspring. Not the best setup for Colts intended "braking" effect but definitely an excellent answer for a "won't break" setup!! The original flat handspring moves with the hand (it's mounted on it so it kinda has to!!) so, as the hand moves vertically the attached spring gets compressed more and more - putting on the brakes.
Since a frame mounted handspring is stationary, it has the most mechanical advantage at the beginning of the cycle (where it needs the least) but as the cycle continues, the hand's pivoting attachment to the hammer moves closer to the stationary spring and thus looses most of the advantage (where it should be the most!). This is the main reason for "beauty rings" on Ruger cylinders.
I sort of compromise wîth my own setup by using a larger diameter rod (I call it a pushrod) with a shorter spring with more tension. It works rather well and keeps throw-by (cyl over rotation) at bay.
Mike
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