Stack weight

[DC]

Something I'm not sure of. Lets say I have a bow that increases 2# per inch DW out to 24" DL. Then it starts to stack for the last 4" and instead of gaining 8#, it gains 12#, 4# more than it would have without stack. Does that 4# contribute anything to the bows performance or is it just lost into never never land?

[bradsmith2010]

the 54# bow probably gonna shoot harder than the 50# bow without the stack,, I am just guessing,,
they both would probably shoot about the same 10 gpp.. still just guessing,,

[Pat B]

It seems to me that the stacking portion of the limb is not carrying it's portion of the work thus being dead weight and not increasing but decreasing the performance.

[nabiul]

I don't have hard numbers, but my first bamboo bow which is super stacky only has performance when you pull into the stack and it shows in arrow speed. Makes for terrible consistency if your draw length isn't spot on each time. But it could be an anomaly from it's weird construction.

[Badger]

  I agree with Naibel, the bow does get the benefit of the added draw weight but not as much benefit as it should get because it drops off so rapidly. The bottom line is that a stacking bow simply stores less energy.

[DC]

  I agree with Naibel, the bow does get the benefit of the added draw weight but not as much benefit as it should get because it drops off so rapidly. The bottom line is that a stacking bow simply stores less energy.

If you cock your head just right that sounds close to what I said You're still going to get the 2# per inch but the 1# from stack doesn't deliver. Or are you saying you will get some of the 1#?

[Badger]

  I agree with Naibel, the bow does get the benefit of the added draw weight but not as much benefit as it should get because it drops off so rapidly. The bottom line is that a stacking bow simply stores less energy.

If you cock your head just right that sounds close to what I said You're still going to get the 2# per inch but the 1# from stack doesn't deliver. Or are you saying you will get some of the 1#?

  Yes you get the 1# it just drops off faster, if you start off at 10# and then build to 50 as opposed to starting at 2# and building to 50 there is a sizable difference in stored energy. Just not storing as much energy as a smoother draw.

[DC]

Gotcha, thanks. In order to arrive at the same draw weight the mid range on the stacking bow won't be 2# per inch.

[PatM]

Diminished returns are still returns.   The Turkish flight bows max out the stack weight.

[Badger]

Diminished returns are still returns.   The Turkish flight bows max out the stack weight.

A lot of flight bows have been stackers

[PatM]

Yes but the Turkish ones can safely  work into the stack more.

[bradsmith2010]

ok so I am confused and dont understand,,could two same like bows, one that stacked, and one that did not,, shoot the same fps,,,10 gpp,, or what,,

[Badger]

  I don't fool much with stacking bows but my opinion is that they have the potential to be more efficient with very light arrows pound for pound. Loss of efficiency is a major thing with light flight arrows. I have one bow here that does stack at the last 3" a short recurve and I have gotten over 300 fps with it using light arrows.

[SLIMBOB]

That blows my understanding of stack weight.

[PatM]

That blows my understanding of stack weight.

Was your understanding based on the musings of Tim Baker?