Short/long question

[Michael Arnette]

I have a question about riser length. I recently purchased a new customTallTines with a long riser and short limbs. I love it!
I still have my 58 inch model with short riser and short limbs and I put these limbs on the long riser but it feels like its lighter poundage.
I would think a longer riser would make the same limbs higher poundage, am I wrong?

[old_goat2]

Depends on the design, with ILF you lose approximately one pound of draw for each inch the riser is longer, on some bows the limb pad angle is changed to keep the weight the same, so ask your bowyer how he does it.

[maxwell]

My experience with Schafer recurves is if the limbs where made for a short riser say 15" and you put it on a 17" you would loose around 1# per inch. So 50 #limbs for a 15" riser would be 48# on the 17" riser and on a 19" riser from 15" you would have a 46# limb. This is how it works with Schafers and I presume with others as well.

[Michael Arnette]

Hmm well that makes sense with what I'm feeling then. Apparantly I'm not a geometry wiz. I actually like it, puts me at about 58# at my draw so not too bad.

[Ceb]

Yeah, Bear takedowns generally lose 2-3# going from the short A riser to the longer B riser. And then even more with the long C target riser.

[Hermon]

Longer limbs = longer lever, so it takes less effort .

[DanielB89]

Michael,

I have also wondered the same thing, how does a longer riser make the poundage less?  

Someone know how to explain this?  Something to do with limb angle?  do the short and long riser have the same angles?

[Hermon]

The overall bow length is increased with longer limbs or longer riser.  From center of bow to string nock is the length of the "lever".  Wether you increase the limb length or the riser length you will decrease the poundage.  Same as if you decrease the limb length or riser length increases the poundage.

[TOEJAMMER]

I could be wrong but I think Bob Morrison figures 2+/- per inch on riser length.