[Supraspinatus]

I own short and long Sanlida Miracle X8 limbs, both in the same poundage. Even though the short limbs are each 2 inches shorter than their long counterparts, measured from fade to tip they are only 1/2 inch shorter than the longs. The working parts of the short limbs are only half an inch shorter than the working portions of the long limbs. Most of the length difference between the limbs is in the non-working parts.

I was surprised at this, but it explains why I feel that the shorts don't draw that much different than the longs on the same riser. The finger pinch is greater, but the fee/effort of the draw is not that different.

So 75% of the difference between the longs and shorts I have is in the non-working parts of the limbs.

Question: is this true of most or all ILF limbs?

 

[DDD]

Lift point

Trying out two new bows. One is a 23" riser with short limbs and the other is 19" riser with medium limbs. So there is two inch difference. I have not done a draw force curve on either. Tiller is slightly off on both. But I am not sure which lift point is best? Just looking for a second opinion. Dan

www.tradtalk.com

There is difference.
DDD

 

[Onski316]

Lift point

Trying out two new bows. One is a 23" riser with short limbs and the other is 19" riser with medium limbs. So there is two inch difference. I have not done a draw force curve on either. Tiller is slightly off on both. But I am not sure which lift point is best? Just looking for a second opinion. Dan

www.tradtalk.com

There is difference.
DDD

agreed. i tried a set of shorts vs longs and at my 29.5" draw, i felt the shorts didn't feel as smooth. Seemed stiffer. Felt like they shot quicker though. Didn't have my chrono to test at the time though. I might be able to get away with a set on a 21"+ riser but on my 17" I had at the time, definitely felt different.

 

[Tracker1]

I think much would depend on your draw length but I see much less difference between short vs longs at 27” DL than I thought I would. But where length and performance isn’t a big issue I’ll stay with longs, they are just slightly smoother, but after shooting shorts that’s what will always be on my hunting bow. The shorts of the same limb and poundage seem to launch the arrows with much more authority. As far as finger pinch on my 19” riser with shorts I don’t notice a difference from longs.

 

[Supraspinatus]

But the question: Are the working lengths (from fade to tip) of ILF short limbs only 1/2" shorter than the working lengths of ILF long limbs?

That is the case with my Sanlida X8 long and short limbs.

Is it also the case with other ILF limbs? With ILF limbs across the board?

 

[Tracker1]

But the question: Are the working lengths (from fade to tip) of ILF short limbs only 1/2" shorter than the working lengths of ILF long limbs?

That is the case with my Sanlida X8 long and short limbs.

Is it also the case with other ILF limbs? With ILF limbs across the board?

I think you also have the total length of the limb (lever) making a difference in performance between sizes, how much I don’t know.

 

[Sam Dunham]

Geometry, Preload, Angles and much more determine the DFC.
High quality shorts may feel as smooth as lesser quality longs.
More about Riser length in some cases.
The short Risers come at a price in DFC, somewhat.
ILF longbow limbs are getting more recognition on short Risers, yes?
A longer Bow is usually easier to shoot for most.

https://www.ocf.berkeley.edu/~archery/wp-content/uploads/docs/recurve-fundamentals.pdf

 

[Supraspinatus]

But, but, but the question: Are the working lengths (from fade to tip) of ILF short limbs only 1/2" shorter than the working lengths of ILF long limbs?

That is the case with my Sanlida X8 long and short limbs.

Is it also the case with other ILF limbs? With ILF limbs across the board?


Could someone please measure some short and long ILF limbs? Length from butt to end of fade. Total length. Two measurements for each limb. Thanks.

 

[Sam Dunham]

Limb cores 2 1/2 x 2=5
Shorts on for instance a 21 make a 62 inch Bow.
21 minus 62 =41
5 minus 41=36
2 divided by 36=18
So shorts have 18 inches of limb but, that is only to the string nocks.
Correct my math, just doing it in my head.
If you count the Core the limb is 21 to the tips.
Longs? Do the math.
Longs on the 21 make a 66 inch Bow.

 

[Sam Dunham]

So 23 on longs?
2 inches difference but remember to deduct an inch overall from the length, tips down to the string nocks. Correct?

 

[Sam Dunham]

But, but, but the question: Are the working lengths (from fade to tip) of ILF short limbs only 1/2" shorter than the working lengths of ILF long limbs?

That is the case with my Sanlida X8 long and short limbs.

Is it also the case with other ILF limbs? With ILF limbs across the board?


Could someone please measure some short and long ILF limbs? Length from butt to end of fade. Total length. Two measurements for each limb. Thanks.

This might be different by maker, propriatary.

 

[Tracker1]

This might be different by maker, propriatary.

I believe you may be right.

 

[Tracker1]

But, but, but the question: Are the working lengths (from fade to tip) of ILF short limbs only 1/2" shorter than the working lengths of ILF long limbs?

That is the case with my Sanlida X8 long and short limbs.

Is it also the case with other ILF limbs? With ILF limbs across the board?


Could someone please measure some short and long ILF limbs? Length from butt to end of fade. Total length. Two measurements for each limb. Thanks.

I will tomorrow.

 

[Supraspinatus]

Thanks, guys.

And I actually made a mistake. The length of the non-working part of my short limbs is 6.5" and 7.5" on my longs. So this makes the difference in working length between the shorts and longs 1". In the OP I wrote "1.5".

Even still, I'm surprised that half the difference in length between the short and long Sanlida X8s is in the non-working part of the limb. And I'm very curious if this relationship is common to ILF limbs, in general.

Here is a photo of the short and long limbs, where you can see the length from butt to fade is pretty dramatic:

 

[Sam Dunham]

Those longs should be very stable torsionally.

 

[Supraspinatus]

Those longs should be very stable torsionally.

Ah, I see your point. And the shorts relatively unstable.

Unless all ILF limbs are so proportioned.

 

[Sam Dunham]

Ah, I see your point. And the shorts relatively unstable.

Unless all ILF limbs are so proportioned.

Not what I meant. The length of the cores and long fades.
The shorts should be stable also, the limbs are shorter.

 

[Tracker1]

But, but, but the question: Are the working lengths (from fade to tip) of ILF short limbs only 1/2" shorter than the working lengths of ILF long limbs?

That is the case with my Sanlida X8 long and short limbs.

Is it also the case with other ILF limbs? With ILF limbs across the board?


Could someone please measure some short and long ILF limbs? Length from butt to end of fade. Total length. Two measurements for each limb. Thanks.

I just measured my Tradtech BlackMax 2.0 short and longs and my shorts are 17.5 and the longs are 18”. I have to say I was a bit surprised at that.

 

[Supraspinatus]

I just measured my Tradtech BlackMax 2.0 short and longs and my shorts are 17.5 and the longs are 18”. I have to say I was a bit surprised at that.

Tracker, is that tip to fade? Could you do butt to end of fade also?

 

[Tracker1]

Tracker, is that tip to fade? Could you do butt to end of fade also?

It was the tip to the fade, I’ll check the butt to the fade out also.