TRACTATUS. Roller gun, To be, or not to be, that is the question? (C)William Shakespeare
......... I make several theoretical and practical researches on the special testing platform
regarding to the roller gun with differ setup and differ type in compare with conventional spear gun
1 conventional spear gun
2 classical roller gun
3 inverted roller gun
4 tackle roller gun (polea)
5 and two other type of roller gun with spear speed multiplexer, somewhat like it realized on tackle roller gun
All tests was done underwater with same elongation coefficient, same shaft, same temperature, same shooting distance, with same quantity of rubber or exactly two, three, four, six, eight time more rubber
By measure spear penetration depth in the block of plasticine, i can measure ballistic energy of spear with compare with differ roller gun or spear gun setup, i can figure out how efficient one type or setup from another
1 All roller gun type except classical roller gun a really poor shit coz it consume too much power with hydrodynamic loses
and not efficient at all, so do not buy a dumb ass information and product regarding to any inverted or tackle roller gun success story
coz all those a very poor concepts even in theory, you cannot speed up shaft faster with any kind of system with rubber band even if you use enormous quantity of rubber
As you may well see on diagram, 5 bands conventional speargun can be equal to 8 band roller gun
so ? any benefits to use polea ? yet nothing, ok what if we put more bands ? i did test up to 16 bands, but still nothing, after you rich maximum. the quantity of rubber doesn't do any job anymore
but what is a maximum ? is a around 30 metre per second shaft speed.
coz hydrodynamic loses IN WATER can eat all those energy stored in band as a black hole
keep in mind you shooting in WATER not in AIR like bow compound or crossbow compound with tackle (polea) systems
2 And! finally my conclusion is simple about usefulness of roller gun:
the only ONE reason to use classical single band roller gun !
is to use it for a FAST RELOAD if u hunting on shoaling and school fish like bluestripe snapper, barracuda, codfish, mullet, yellowtail. etc.
because if you make a good classical single band roller gun with ability of one single hand movement reload it can be the same powerful as two band conventional spear gun
and u can win a little time for reload
in case we compare same roller VS spear gun with same amount of rubber, same elongation coefficient, same spear, and same barell longitude
That figure !
Shooting range of good and wise produced single rubber classical roller gun EQUAL to the two bands conventional spear gun
Is a few myth bugging around roller guns..
Like: it provide more speed to the spear, more accurate, less recoil, rollergun use much efficient energy accumulated in same rubber and shoot longer distance, much maneuverable with same shooting distance with same rubber and barrel
well except less recoil ..the rest are just a myth
But recoil is a no problem for those who know how to handle a gun. Roller gun may reduce recoil something about 15-25% no a big deal to me
Long two band spear gun have nearly same energy as 9 mm Parabellum bullet. Every man can handle recoil of a 9 mm gun ) but man can shoot precisely enough for 7 meters even with super powerful shotgun 12 caliber from one hand, where recoil is really hard, but man still can handle it.
(7 meters is about to be a maximum shooting range under water for spear gun)
is a several old farts who claim that the viper effect on roller gun is far less? yep! it must be so ... but even this viper effect does not make problem for archers to shooting up to 40 meters precisely, not to mention crossbowmen who are shooting even further,
but once again! under the water maximum shooting range for speargun just about 7 meters,
maybe it is not about hit the mark? but about loosing the power ? well if we agreed about 2 bands speargun is equal to 1 band roller gun ! who a hell ever carry before about viper effect onto 2 bands conventional speargun ??? is no reason to worry about it at all. so do not listen those viper assholes....
Regarding to two bands roller gun I’ll prefer to advice a 4 band conventional spear gun instead,
Coz! with the same power and same shooting distance 4 band spear gun definitely much maneuverable than two bands roller gun coz such a 2 bands roller is very fat guy.
and that setup is for big game spearfishing where fast reload is not an important option
Hope my research help to underwater peoples do not waste they time and money for something that is not worst it, or no suitable for they type of hunting
or make a wise, deliberated, and measured choose regarding to roller gun
in fine Tractatus.
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