Ok this is a new one on me, someone please share some philosophy behind this concept. This bow has two strings one string is 60# the other is 52#. How in the world does that work out on the same limb and how in the world would it shoot having two string on it?????

 

Interesting very interesting

Who's the bow made by, and I'm like you, how does it work????

BOB

Is this your bow?

I don't understand how it would work. Especially since you state they pull two different poundages.

It looks like to me you would have to pull both strings to keep one from hanging loose and fouling while you pull the other?

I'm not really positive but I think you shoot 1 string at a time.  The one in the normal grooves is heavier draw weight, and the higher string is lighter.

:eek:  


Tom, I've never seen that before, but I do remember seeing a longbow with 2 string grooves. You could change the draw weight by string it in different grooves. Maybe that is what this one is designed for.

Yup, what DHR said.  I think J K Chastain made this bow or one like it, and the strings are not used simultaneously.  One at a time for different draw weights.

I do not know for sure but my guess is you don't shoot it with both strings on it (wouldn't work like you said) but the photo is showing two different string POSITIONS for photo purposes and in one position the string is over the end of the bow not in the grooves possibly creating a difference in poundage as if you shortened or lengthened the same bow by cutting it off and creating new ends.

I think there was a guy on here a while back talking about this design and a design using rubber tubing to build bows.

Bill

That bow is designed to only work one string at a time. it allows for two different weight options with the same Bow.
is it a Wapiti Spike?

an effective change in the bow's ntn length, which changes the draw weight at a given draw length.  

been done before with dual nocks per limb.  

i just don't see the point ...

I am a slow typist and got beat to the punch again    

Over&Under nailed it. Keith did or maybe even still does make that bow. It used to be on his website.

A.S. is right. Its made for one string at the time. I have made a simular bow, but with two groves. This type with "over the top" nock have a tendens to pop of if the bow have low poundage. But it is a cool bow, and a funny creation:)

Thanks guys, yeah its a Chastain Wapiti and no its not mine. Learn something new everyday.

First I seen that,I've seen bows with two sets of nocks grooves for different draw weights.But haven't seen two strings on a bow at the same time.

Here is the link to his website-

http://www.worldclassbows.com/dualdraw.htm

 

There's one of those in RMSgear right now - it's a wapiti spike, with 2 different grooves - sure as heck threw me for a loop when I first saw it. And yes, you only have one string on it when shooting.

Keith does stll make that set up

Interesting set up



I build them this way. There is a 7 # difference in draw weight. My bones decide which I use.

This used to be done by target shooters to compensate for a bow getting weaker over a day of shooting on a warm day.  These were yew longbows, not fiberglass bows.

Interesting that someone carried the idea over to a 'glass bow.