Lockbow
My lockbows are done, they are similar to flightbows, but they have a lock, and could be drawn by two hands.
Weight of the bow without string is 258 gram +/- 10 grams.
Lenght 100 cm
95 cm nock to nock.
Drawforce
15 cm 30 kilo (66 pound)
18 cm 40 kilo (88 pound)
22 cm 50 kilo (110 pound)
25,5-27 cm 60 kilo (132 pound)
The material is Picea Abies tree.
It would be interesting to compare this with a real flightbow.
The second one is the same, just 20 cm longer and only have 30 kilo of draw force at 25 cm.
Weight of the bow without string is 258 gram +/- 10 grams.
Lenght 100 cm
95 cm nock to nock.
Drawforce
15 cm 30 kilo (66 pound)
18 cm 40 kilo (88 pound)
22 cm 50 kilo (110 pound)
25,5-27 cm 60 kilo (132 pound)
The material is Picea Abies tree.
It would be interesting to compare this with a real flightbow.
The second one is the same, just 20 cm longer and only have 30 kilo of draw force at 25 cm.
"flight bow" means: normal hand bow made for flight shooting.
flight shooting = shoot as far as possible
what you show here is a cross-bow
anyway..nice work
:wink:
flight shooting = shoot as far as possible
what you show here is a cross-bow
anyway..nice work
:wink:
The other crossbow with the lenght of 1,2 meters is now dryed after being backed with rawhide.
the widht of the bow was only 35 mm.
And i really did expect more.
After first giving 27,5 m/s with a 20 grams arrow, it now give me
28,3 m/s with the same arrow. :lol:
I have not measured the draw wight, but think it maybe increased with 2-3 kilograms and the bow is now 20 grams heavier than before.
So all i did was to give a bow that allready had more endurance than needed, even more endurance.
At a cost of som more draweight and added weight to the bow it self, but no gain in velocity of the arrow.
The real gain will show when i?m now forced to shorten the bow to keep 25 cm drawlenght and increase the power of it.
To bad i have a lot of airbubbles everywhere.
The bow is square so i guess it?s the reason of the airbubbles.
And the glue was to watery i think.
Maybe should have waited a while before wraping it in cloth.
It?s just a (the 120 cm one) test bow, and i was not happy with it from the beginning.
It had defects in the wood and i was forced to make it thicker in one place.
It bend nice on the tiller, but one limb have more weight than the other.
It shoot streight and everything, so i guess it dosent matter.
the widht of the bow was only 35 mm.
And i really did expect more.
After first giving 27,5 m/s with a 20 grams arrow, it now give me
28,3 m/s with the same arrow. :lol:
I have not measured the draw wight, but think it maybe increased with 2-3 kilograms and the bow is now 20 grams heavier than before.
So all i did was to give a bow that allready had more endurance than needed, even more endurance.
At a cost of som more draweight and added weight to the bow it self, but no gain in velocity of the arrow.
The real gain will show when i?m now forced to shorten the bow to keep 25 cm drawlenght and increase the power of it.
To bad i have a lot of airbubbles everywhere.
The bow is square so i guess it?s the reason of the airbubbles.
And the glue was to watery i think.
Maybe should have waited a while before wraping it in cloth.
It?s just a (the 120 cm one) test bow, and i was not happy with it from the beginning.
It had defects in the wood and i was forced to make it thicker in one place.
It bend nice on the tiller, but one limb have more weight than the other.
It shoot streight and everything, so i guess it dosent matter.