Great read on speed!!

[michihunter]

www.huntersfriend.com/bow-review-400-fps-bow/400-fps-compound-bow.htm

[BT]

michihunter said:

www.huntersfriend.com/bow-review-400-fps-bow/400-fps-compound-bow.htm

Very good read

[SPIKER]

"As you draw a bow, some of your muscle energy is used to overcome friction in the system rather than just to compress the bow's limbs. Friction in the cam axles, string surfaces, cable slide, etc. all add a little draw weight to the cycle. So when you draw your 70# bow, you're expending a few pounds of effort just to make things "turn". Sadly, you don't get this energy back when you fire the bow. This is why the output side of the Force Draw Curve is always a little lower than the input side. This degradation or loss of effective draw weight due to friction forces is called hysteresis, and it's something that even the 400 fps super bow will need to contend with."
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So, what they are saying is that if the manufacturers could get better efficiency, they could get better speeds?....interesting....
Even the Guardian succumbs to it, and it's one of the best.

[shaman]

spiker said:

Even the Guardian succumbs to it, and it's one of the best.

Actually if you read the 2007 Bow review, the Guardian is one of the lesser efficient bows in the test for energy conversion.
Not even in the top 10, and you can see where the top 10 numbers come in.

The efficiency was advertised as ground breaking at 86%.
The AT test and the Bowsite test show 74%.

The most impressive is the Drenalin.
Even while it is a Single Cam, it may not be the fastest...
but it is getting the most out of those slim limbs as any other bow.

[michihunter]

Great point Shaman. Just imagine how far out in front the Guardian would've been if the claims were accurate. Rumor is that the Guardian willl be approaching 350fps in '08. I can see thhat being totally possible if the efficiency rating comes close to Bowtech's intial claims.

[SPIKER]

Ah..good catch shaman..advertized,and actual differ!

Imagine it was as speced.

And after looking at that chart I see that the next three are the speed bows of the group.