Koah Standard Roller Speargun Series are finally on our shelf. Do not let the gun size fool you. So what is the power equivalent of a roller gun vs a standard model? There are a couple variables such as band/shaft size and user preferences ... but you can figure about 20-25% advantage over the same standard model. For example a 52" Roller would rival a three banded 60" standard speargun! these
guns pack a ridiculous punch with minimum recoil along
with surprising range .Not to mention the dead on accuracy Koah was
built around. Roller guns are not a new idea. First Rollers we seen as far
back as the 50's and 60's . For the most part they were very
large, difficult to load, very expensive and not very user
friendly once you pulled the trigger. So what is a roller? How do
they work? What are the benefits of using a roller gun? The Roller gun utilizes
three advantages, Large power in small more mobile size, next to no recoil and
only one or two bands to load. The large power comes from the use of a 45-60in
power band that starts on the bottom of the stock that
pulls through ball bearing rollers that function as a pulley to allow you
to easily load a band of that size. On a standard power
band there is approximately 25-35 percent power loss due the natural oval
shape of the band and the wishbone. On a roller speargun that waste is
reduced to about 5-10 percent with the band starting on the bottom of the
stock. This allows you to utilize nearly the entire top of the stock for the
power stroke of the power band. The front or "kicker" power
band on the muzzle of the speargun is a standard power band. Its primary
function is to get the shaft out of the mechanism with snap speed followed
by the roller band that pulls it through the stock of the gun. To add more
power we installed a second stage band location on the bottom of the stock.
After the speargun is loaded the stock can be flipped over and the
now tightened power band can be pulled to the lower second stage to get
every last inch of power. We created thumb spots in the stock to assist
with this. The other huge benefit is the roller guns lack of recoil.
This is from the reaction of the large roller band moving two opposite
directions at the same time. This causes the gun to
"THUMP" rather than "KICK". - Laminated Teak stock
-
- Poured Glass filled epoxy enclosed track
(2) - 5/8 Bands 24-28in
- Quick Slide Line System
- Solid Lead rear ballasted
- 5/16 shaft
Koah Standard Roller 48" Speargun & Warranty
52"
