Len,
I did not mean to imply that it is that simple, just using that as an example to explain how brace height, power stroke and draw length relate to each other. I completely agree that when the engineers set down to design a new bow they do not merely increase or decrease brace height to change bow design, but they consider all factors and design accordingly. But, if they (the engineers) chose too they could pop in a more reflexed riser with matching length and limb pocket angles and that would in effect reduce brace height. At the same time though that would decrease the draw length of " that bow" , but it would not decrease " your" draw length. You would however need to change cam design or modules to increase the draw length of " that bow" to match " your" draw length. Once this has been done then the above scenerio I mentioned before would come into play.


PA and Len,
I haven' t taken any of the posts in an arguable way, just friendly discussion.

Oh, I almost forgot. Since we were discussing the time and distance factor, I have been thinking. They either one could be used to determine the amount of energy transfered to the arrow. It would be dependent upon how they chose to measure the force exerted by the limbs/string. The energy is initially transfered from the limbs to the string then to the arrow. If they chose to measure this energy with a factor of time such as ... the bow delivers X amount of energy to the arrow over Y amount of time from release at full draw. And no I don' t believe this energy transfer would be equally transfered over the full power stroke. Sort of a curve like a draw force curve. If they measured it this way, and they could, then you would calculate the energy using the time the arrow remained on the string from full draw to brace height.
But, as you stated, since everything else is calculated using factors of distance then I am sure when ever they plot the amount of energy transfer they plot it against distance of power stroke, and I think the plot would still look something like a draw force curve.