Jason--

The extra stress is being directed to the radius of the limb due to it's excess tip travel, which is caused by the stationary roller as opposed to one that allows the cables to move.(Q2 for instance) If the limbtips move an extra say 1" or so due to the stationary roller, this in turn puts much more stress on the radius of those limbs. All limbs have a certain deflection value. (weight rating) If the limb's deflection value is say 60 pounds, when you install that limb on a Legacy and add the extra 9lbs or so of prestress created by the roller guide, you are effectively turning that 60lb limb into a 69 lb limb. So a factory spec 70lb bow will essentially have 60lbs limbs on it that are cranked to 70. This excess stress will wear the limbs faster and they have a greater possibly to exhibit failure due to it. It also throws more shock thru the bow because you are stressing a lighter limb above it's range.

We used to prestress limbs back in the 80's in an attempt to get more speed out of the bows, and it does neither the limb nor the bow any good to do this IMO. I witnessed many limb failures due to such moves and other "tricks", and had since thought that we were safely beyond that era. Guess not. Just my own thoughts, Pinwheel 12



Edited by - Pinwheel 12 on 01/14/2003 19:58:53