Static tip vs working recurve

[Pat Ct]

Hello,

Just wondering what the advantages and disadvantages of recurve static tips and working recurve tips are? I have a vague idea but would like to learn more.

Thanks a lot,
Patrick

[fnshtr]

Anxious to hear from others on this too. My experience is limited but the Kempf bow in my signature is very smooth and quiet. I shoot it better than any bow I have ever shot, and I have owned and shot a bunch of nice bows.

[monterey]

I have or have had eight recurves and one static recurve. I like the static recurve the best.  It is very stable.  My follow through with it is better than the others.

There are other factors at play with any bow design that could be making the difference, but that is my subjective choice.

[jt85]

I can't help but I will be watching this one.
I bet Sixby will jump in here soon.

[damascusdave]

It might be worth doing a search on this one...we have gone over it pretty thoroughly in the past... my first static tip was built by Jon Gharing and I am about to own another of his bows...I had an RER XR as well and my Tuktu EX has become my go to bow for hunting this fall...if you really want to see what a static tip bow is capable of take a look at Pete Ward's assessment of the Border Covert Hunter...those Hex 7 limbs are amazing...still there is no magic in static tip limbs...I have a 1960 Bear Kodiak that shoot nearly as well as the Tuktu EX...all a matter of what sort of force draw curve you prefer...most static tips load draw weight early in the cycle

DDave

[yononindo]

in fact the Hex7 is a semi static

the first half of the hex7 recurve is working, while the second half is static...

in this case, you have the best of 2 worlds combined ...

 
 

[Kris]

 

"the first half of the hex7 recurve is working, while the second half is static..."

Well yeah...the limb has to bend somewhere, I'm not trying to sound like a smarty pants and offer no disrespect.  That is what a static tip recurve is though....the curve of the limb does not open up, it does not bend, it is static.

The efficiency of a static tip recurve comes into play in that the string angle, the angle made between the tip of the limb and the string, remains more acute at full draw, offering a greater mechanical advantage.

Kris

[yononindo]

Originally posted by Kris:
 

 

"the first half of the hex7 recurve is working, while the second half is static..."

Well yeah...the limb has to bend somewhere, I'm not trying to sound like a smarty pants and offer no disrespect.  That is what a static tip recurve is though....the curve of the limb does not open up, it does not bend, it is static.

The efficiency of a static tip recurve comes into play in that the string angle, the angle made between the tip of the limb and the string, remains more acute at full draw, offering a greater mechanical advantage.

Kris [/b]

you are right about the limb has to bend somewhere    

let me try again here ... I was not referring to the whole limb .... I was talking about upper curve of the limb

actually this upper part of the limb does open up to some part - instead of being static like on other bows

that is why I call this a SEMI STATIC limb

have a look here and you can see what I´m talking about

   

if you watch closely you can see the working parts of the whole limb including the upper part

of course if you are just talking about the VERY end of the limb tips ... than all of them are static

[John Havard]

Originally posted by Kris:
 

 

"the first half of the hex7 recurve is working, while the second half is static..."

Well yeah...the limb has to bend somewhere, I'm not trying to sound like a smarty pants and offer no disrespect.  That is what a static tip recurve is though....the curve of the limb does not open up, it does not bend, it is static.

The efficiency of a static tip recurve comes into play in that the string angle, the angle made between the tip of the limb and the string, remains more acute at full draw, offering a greater mechanical advantage.

Kris [/b]

Kris has given the correct answer.  The static tip acts as a lever arm (think siyah) and enables the bowyer to make the limb bend in ways that reduce finger pinch and, within limits, makes the working part of the limb work harder.  Static tip recurves store energy efficiently and "feel" different over the last few inches of draw.  Because the incremental draw weight at the back end of the draw actually goes down due to the lever-arm effect it can feel almost like let-off.

Full-working recurve limbs are great too, and properly designed can perform very well.  They will feel different through the draw cycle, however.

[yononindo]

Originally posted by John Havard:
 

Originally posted by Kris:
 

 

"the first half of the hex7 recurve is working, while the second half is static..."

Well yeah...the limb has to bend somewhere, I'm not trying to sound like a smarty pants and offer no disrespect.  That is what a static tip recurve is though....the curve of the limb does not open up, it does not bend, it is static.

The efficiency of a static tip recurve comes into play in that the string angle, the angle made between the tip of the limb and the string, remains more acute at full draw, offering a greater mechanical advantage.

Kris [/b]

Kris has given the correct answer.  The static tip acts as a lever arm (think siyah) and enables the bowyer to make the limb bend in ways that reduce finger pinch and, within limits, makes the working part of the limb work harder.  Static tip recurves store energy efficiently and "feel" different over the last few inches of draw.  Because the incremental draw weight at the back end of the draw actually goes down due to the lever-arm effect it can feel almost like let-off.

Full-working recurve limbs are great too, and properly designed can perform very well.  They will feel different through the draw cycle, however. [/b]

John
I am not saying that Kris was wrong ... I agree on what he says

but ...   I was referring to the HEX 7 limbs .... again here: they are what I call a SEMI STATIC limb  

I´ve been shooting Asiatic horse bows for decades ... so believe me here when I am saying that I do know the difference between a static and and working recurve limb

here´s a video of me shooting a Korean horse bow with static limbs

 

if you compare the 2 bows in the videos you can see what I´m talking here

  I was talking about a bow that combined the best of the 2 worlds - static & working

that was all that I was referring to - so if there was no such thing as a SEMI static ... well, here it is      

[Chortdraw]

The last bows I built were both static tip and have proved to be smother and quicker and very stable. they also seem to help the short draw archers from what I have experienced. But this is only my opinion but I sure enjoy shooting mine.

[**DONOTDELETE**]

You got it going on there Daniel... the hex 7 is NOT a static tip recurve.... those hooks open up too much at the tail end of the draw to be considered static tips.

I'm not real fond of those monster hooks on the hex 7 limbs personally, but a bowyer can't help but admire the engineering in that limb design. Incredible DFC chart....

Kris & John nailed the advantages/ disadvantages of the static tip design perfectly.