Hi Don,
James Carter made the float to look like and act like a parachute because it will not only offer air lift from the 20 liters but it will allow water drag like a sea anchor. It is like putting a bucket of water and drag it along in water. So I have two breaking effects, water resistance no matter where the fish is heading or how deep and lift resistance because the float wants to head up to the surface.
There is no way I can fill the float up with my scuba tank, no time. C02 is the only ticket for fast action but they cost like US$50 each for a 150 gram and I heard in quantity of 10 they go down to US$30. In my currency this is big money but surely hell cheaper than loosing a gun.
5 liter of air in sea water is equivalent to about 5.75 kg of up lift or 12 pounds. This is not enough for any 50 pounder tuna or more. My fins at best can offer a lift of 20 pounds if I kick like mad. All the big tuna I shot have been always heading for the bottom, not a good direction for me to follow at this deep pinnacle. I have no idea how much resistance in pounds the parachute offers but it should increase with speed, that I am sure.
Tuna can hit 50mph free swimming when not shot. My best bet is to get 150 gram C02 for that float. I calculate I will get about 15 liters of air lift at 120 feet and from 90 feet or shallower it will be a full 20 liters.
Say 15 liters, that means 17kg or 37 pounds of lift. Assuming the parachute shape offers another drag of 20-30 pounds at "X" speed. I have then about 57-67 pounds of drag resistance against the fish of which 37 pounds is up lift heading to the surface. I add my finning power of about 20 pounds. I think I should be OK, I hope. This way I am like a freediver with a single Riffe Torpedo type float, in terms of floatation power. Not too good but should be better than only my fins against the fish.
Can't tell until I really test it.
Don't worry about weight belts ego, I think it is good because if you dumped it, you are guaranteed to float to the surface, isn't it safer than being a neutral buoyancy person ?
Thanks again Don.
Do you know what I will do this Saturday to make sure I will not loose my gun ? I called this "project" reverse floatation. I will set up 2 of 55 pounds weight on the bottom. One behind the pinnacle and one in front of it. Both weight will have a thick 5/16" rope attached to it and both will be connected to each other at 110 feet deep. So it will be like a "U" shaped but upside down. Since the pinnacle stood like an apartment building and averagely 100 feet above the sand bottom, 2 weight connected together on opposite end of the pinnacle will make a solid anchor. There is no way even a 200 pounder tuna can drag 2 of 55 pounds weight 100 feet up to clear the pinnacle. Somehow the 5/16" rope will get entangled on the rocks too, that offer extra braking.
I will set up this 2 weights on the fishy zone of the pinnacle. I will then use the Riffe floatline of 100 feet and breakaway to the gun. I will clip the floatline to the 5/16" rope and the other to the gun. However, I will get only 100 feet movement radius from where ever I clip that floatline to, good enough when the fish is plenty. When I fire at a fish, it then will have to drag that 55 pounds weight ( in water weight probably only 47 pounds ) around. Since two weights of 55 pounds are attached, in the extreme of pull direction, the tuna will have to drag both 55 pounds weight.
I purposely wanted the weight not more than 55 pounds because I don't want the fish to tear its flesh if the shot is not vital. A very very big tunacan drag 3 of Baywatch type of rescue floats, that is a lot more than 55 pounds of drag.
I will tie a big knot on the 5/16" rope at 120 feet deepest, this way there is no way the floatline clip can slide down to the 180-230 feet bottom. If the floatline clip goes too deep, I dare not collect the fish too.. I am setting 160 feet as maximum depth I ever want to go.
Sounds a bit crazy eh ? But this is what I ( my gang actually ) can think of before the parachute float combo arrive.
Yes, I will need four of my gang to spend at least one dive gun-less to set the 55 pounds weight on proper spot. We can use the 7 liter surface marker as lift bag, 4 surface marker will lift or lighten the load of the 55 pounds weight.
Any crazier idea appreciated
IYA
James Carter made the float to look like and act like a parachute because it will not only offer air lift from the 20 liters but it will allow water drag like a sea anchor. It is like putting a bucket of water and drag it along in water. So I have two breaking effects, water resistance no matter where the fish is heading or how deep and lift resistance because the float wants to head up to the surface.
There is no way I can fill the float up with my scuba tank, no time. C02 is the only ticket for fast action but they cost like US$50 each for a 150 gram and I heard in quantity of 10 they go down to US$30. In my currency this is big money but surely hell cheaper than loosing a gun.
5 liter of air in sea water is equivalent to about 5.75 kg of up lift or 12 pounds. This is not enough for any 50 pounder tuna or more. My fins at best can offer a lift of 20 pounds if I kick like mad. All the big tuna I shot have been always heading for the bottom, not a good direction for me to follow at this deep pinnacle. I have no idea how much resistance in pounds the parachute offers but it should increase with speed, that I am sure.
Tuna can hit 50mph free swimming when not shot. My best bet is to get 150 gram C02 for that float. I calculate I will get about 15 liters of air lift at 120 feet and from 90 feet or shallower it will be a full 20 liters.
Say 15 liters, that means 17kg or 37 pounds of lift. Assuming the parachute shape offers another drag of 20-30 pounds at "X" speed. I have then about 57-67 pounds of drag resistance against the fish of which 37 pounds is up lift heading to the surface. I add my finning power of about 20 pounds. I think I should be OK, I hope. This way I am like a freediver with a single Riffe Torpedo type float, in terms of floatation power. Not too good but should be better than only my fins against the fish.
Can't tell until I really test it.
Don't worry about weight belts ego, I think it is good because if you dumped it, you are guaranteed to float to the surface, isn't it safer than being a neutral buoyancy person ?
Thanks again Don.
Do you know what I will do this Saturday to make sure I will not loose my gun ? I called this "project" reverse floatation. I will set up 2 of 55 pounds weight on the bottom. One behind the pinnacle and one in front of it. Both weight will have a thick 5/16" rope attached to it and both will be connected to each other at 110 feet deep. So it will be like a "U" shaped but upside down. Since the pinnacle stood like an apartment building and averagely 100 feet above the sand bottom, 2 weight connected together on opposite end of the pinnacle will make a solid anchor. There is no way even a 200 pounder tuna can drag 2 of 55 pounds weight 100 feet up to clear the pinnacle. Somehow the 5/16" rope will get entangled on the rocks too, that offer extra braking.
I will set up this 2 weights on the fishy zone of the pinnacle. I will then use the Riffe floatline of 100 feet and breakaway to the gun. I will clip the floatline to the 5/16" rope and the other to the gun. However, I will get only 100 feet movement radius from where ever I clip that floatline to, good enough when the fish is plenty. When I fire at a fish, it then will have to drag that 55 pounds weight ( in water weight probably only 47 pounds ) around. Since two weights of 55 pounds are attached, in the extreme of pull direction, the tuna will have to drag both 55 pounds weight.
I purposely wanted the weight not more than 55 pounds because I don't want the fish to tear its flesh if the shot is not vital. A very very big tunacan drag 3 of Baywatch type of rescue floats, that is a lot more than 55 pounds of drag.
I will tie a big knot on the 5/16" rope at 120 feet deepest, this way there is no way the floatline clip can slide down to the 180-230 feet bottom. If the floatline clip goes too deep, I dare not collect the fish too.
. I am setting 160 feet as maximum depth I ever want to go.Sounds a bit crazy eh ? But this is what I ( my gang actually ) can think of before the parachute float combo arrive.
Yes, I will need four of my gang to spend at least one dive gun-less to set the 55 pounds weight on proper spot. We can use the 7 liter surface marker as lift bag, 4 surface marker will lift or lighten the load of the 55 pounds weight.
Any crazier idea appreciated
IYA
