hornbows, almost...
Hi
Since some months ago I started making some hornbows. Unfortunately I had some failures and repairs in some bows; hornglue failure, stability problems, wood failures and sinew delamination. But I go on.
About the wood failure in one bow, I was amazed to see in one bow that in both arms at the extreme points of bending the wood broke straight through, leaving the horn and sinew intact. Only on one arm there was some sinew damage that could have let to this wood breakage in my opinion. I used yew wood, and the grain came out somewhat on the back (could have been the cause?) Thinking the horn and the sinew would take the pressure and tension, I didnt take special care for the structure of the wood. Now I know better. Yew and glueing; didnt have problems.
Now I have one bow finished, and a crab bow and turkish flight bow almost strung..
The crab bow is ready for stringing, but I am still a little bit impressed by the power of it... Can anybody tell me if the string is contacting the siyah or not?
The lowest picture was a simpler version of a hornbow, to try, and it worked. Shoots some nice arrows, didnt pull it to the max yet but it has some speed.
Since some months ago I started making some hornbows. Unfortunately I had some failures and repairs in some bows; hornglue failure, stability problems, wood failures and sinew delamination. But I go on.
About the wood failure in one bow, I was amazed to see in one bow that in both arms at the extreme points of bending the wood broke straight through, leaving the horn and sinew intact. Only on one arm there was some sinew damage that could have let to this wood breakage in my opinion. I used yew wood, and the grain came out somewhat on the back (could have been the cause?) Thinking the horn and the sinew would take the pressure and tension, I didnt take special care for the structure of the wood. Now I know better. Yew and glueing; didnt have problems.
Now I have one bow finished, and a crab bow and turkish flight bow almost strung..
The crab bow is ready for stringing, but I am still a little bit impressed by the power of it... Can anybody tell me if the string is contacting the siyah or not?
The lowest picture was a simpler version of a hornbow, to try, and it worked. Shoots some nice arrows, didnt pull it to the max yet but it has some speed.
this is the flight bow I am working on. Also here the string is not on yet...
Here I might have made the tips a bit smallish, 14mm high and 10mm wide, just doesnt look like it can hold that force.
Here I might have made the tips a bit smallish, 14mm high and 10mm wide, just doesnt look like it can hold that force.
looks great.
too bad about the breaks
too bad about the breaks
so I managed to strung the crab bow. I left it on the pegboard, while it seems to be instable in the side directions, as maybe shows on the second picture. Is this normal?
Can I straigthen the right limb out by using heat? When unstrung it is aligned.
Any comments are welcome!
Can I straigthen the right limb out by using heat? When unstrung it is aligned.
Any comments are welcome!
İt seems dangerous twist. İt should correct by warm-heat . İt can correct by opposite force, wait for till cooled. Repeat it a few times. Do not full draw without corrections.
Cem
Cem