Riser length vs limb poundage.

[Schme1440]

Im a little hazey on the relation ship of limbs and the riser size.

Now Example

25" nexus with 68" limbs at 40# Draw of 28" With 40lb on the fingers (easy fgures to work with).

Now what would happen if these same limbs were put on a 23 inch riser? Would you need 2lb lighter limbs to draw the same poundage? My understanding is they would then react 2lb heavier? Is this correct?

If so would it be right to assume that these limbs put in a 27inch riser would react 2lb lighter?

I would prefer answers from some one who has done serious testing on this (obviously 27inch risers are not avaliable for testing) but please share your thoughts anyway.

If you know the comparison with 23 and 25 inch risers that would be a big help.

[paulhuk]

It was my understanding that the poundage of limbs always quoted two figures, one for 23" risers and the other for 25" risers. These are the only sizes I've heard of.

[Schme1440]

Originally Posted by paulhuk

It was my understanding that the poundage of limbs always quoted two figures, one for 23" risers and the other for 25" risers. These are the only sizes I've heard of.

It maybe but what is that comparison? I dont have my limbs to hand to check and I dont even think they will be on mine as I have 70inch limbs.

[darthTer]

Originally Posted by Schme1440

Im a little hazey on the relation ship of limbs and the riser size.

Now Example

25" nexus with 68" limbs at 40# Draw of 28" With 40lb on the fingers (easy fgures to work with).

Now what would happen if these same limbs were put on a 23 inch riser? Would you need 2lb lighter limbs to draw the same poundage? My understanding is they would then react 2lb heavier? Is this correct?

If so would it be right to assume that these limbs put in a 27inch riser would react 2lb lighter?

I would prefer answers from some one who has done serious testing on this (obviously 27inch risers are not avaliable for testing) but please share your thoughts anyway.

If you know the comparison with 23 and 25 inch risers that would be a big help.

On the new trainer bows that our club just got (Rolan), the limbs are marked with weight for 23 & 25 in risers. Im sure the 23" weight is 2# heavier than the 25".....ie.

20# with 25" handle
22# with 23" handle

[Schme1440]

Originally Posted by darthter

On the new trainer bows that our club just got (Rolan), the limbs are marked with weight for 23 & 25 in risers. Im sure the 23" weight is 2# heavier than the 25".....ie.

20# with 25" handle

22# with 23" handle

so it would be safe to assue that 27 riser would make it 18#?

[napolienne]

On my old FXs:

36# at 28" on a 25" riser
38# at 28" on a 23" riser

On borrowed G3s:

36# on a 25"
38# on a 23"

On my current FXs

40# on a 25"
42# on a 23"

So Hoyt certainly reckon a 2lb difference at a 28 inch drawlength. Presumably outside that length the difference riser length makes could vary significantly.

[hooktonboy]

Originally Posted by Schme1440

so it would be safe to assue that 27 riser would make it 18#?

I think you'd be safe to say it would go in that direction but weighing is the only certain answer IMHO

[Schme1440]

Originally Posted by hooktonboy

I think you'd be safe to say it would go in that direction but weighing is the only certain answer IMHO

Apsolutely but unfortunatly no way to test just yet. I did think that I would need to go up 2 pounds more then what I would normally need for a 25 riser but no garantee. Hopefully I will be able to answer these questions soon.

[worthipa]

Originally Posted by Schme1440

Apsolutely but unfortunatly no way to test just yet. I did think that I would need to go up 2 pounds more then what I would normally need for a 25 riser but no garantee. Hopefully I will be able to answer these questions soon.

Details here: http://www.hoyt.com/technical/pdf/20...rve_Manual.pdf on page 4.

I suggest you ask Vittorio on Saggi about the 27" risers, he makes them after all!

Or perhaps the Border boys on here would know?

[Desert Archer]

I used to own a 23" Best Zenit. With long XQ-1 limbs at the lightest setting I got 46# at my draw length. The same limbs on a 25" Best Moon (limb bolts out) gave me about 44#. That 2# difference is what you are supposed to get and my experience confirmed it.

Dave