Quote:
Originally Posted by qazedx
the gun spear track (barrel) will be 1m long, I will be using a flopper shaft as it is easier to make I'll try to hunt all kinds of fish, but mostly I'll hunt in fresh waters, I believe a hard stainless steal shaf should do the job, but I'm interestin in hearin other opinions and I dont know the number of steal.
I am making a woden gun just with stell track so it wuold be longer lasting and more acurate also I believe it wuold allow me to use alot of power.
also I was wondering what size shuold be the gap in picture a)
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i think with a 1 meter track you might want to consider not making an enclosed track and leave it open. the reason i think this would be ok is because the shaft is not all that long and would not require a enclosed track to aid in controlling shaft whip as it exits the gun. you can also use your choice of spear shaft tabs as well and not have to use shark fins on the shaft or pins for loading the wishbones of the bands.
another benefit is that if you are hunting around structure and happen to bend a shaft you might be able to straighten it out enough to get it to still work again as opposed to having to have a perfectly straight shaft needed for an enclosed track.
also the open track will allow for faster loading too if combined with an open muzzle.
the steel i would choose for the shaft would be spring stainless steel and if a single flopper, use one which is about 3 inches long, also determine how much shaft overhang you want coming off the fornt of the gun as well. I prefer little overhang on my own guns and i use a single flopper as well.
have you thought about what trigger mechanism you want to use yet? i think maybe in this case it would be easier to buy couple of spears with floppers pre made and a trigger mechanism for them. that way it saves you from having to machine more metal and you can concentrate on the wood working.
as for the track, do you have access to uhmw or delrin ?those would be quite slippery and easy to make as opposed to having to machine a length of steel rod for the track. if you go with the open track you can also use a JBL tru glide track which can be cut to size and epoxied onto the gun. its an easy alternative if you decide on an open track design.
