rollergun 120cm

[Kin]

While waiting for the varnish to dry on my wooden roller i made something that i have done many times but in a large scale.

I have build a roller gun 120 cm length .

The gun can only be used in realy large fish. It can shoot 8 and more meters with insignificant drop on the spear wich is 7mm diameter.

2 hours is the total time i spend making it. The rollers have a kind of suspension that give a very soft and accurate shot.

I have made 4 rollers like this one but alot smaller. This is a real canon. Enjoy


PS: The loading is not the easiest thing on the gun but if someone is tall can manage it. I am 1,87m
I made this gun mostly to have something special in my colection rather fishing because where i live i don't have good visibility in water. But i cary it with me when going in deep waters in any case....

[Kin]

Here is the rubber guard

[foxfish]

Good fun building roller guns. you might like to try a Sporasub easy load wishbone, would shorten the stretch when loading. (available from DB shop)

[Kin]

any pictures of it? It might be usefull after all

[foxfish]

If you go to the Deeper Blue shop at the top of this page, look for spearguns, you find them for sale + pics on page 7.

[Kin]

Well it looks just like a simple bar. Is it so?

[foxfish]

Yes a simple removable bar that makes loading much easier & reduces the stretch about 6"

[Kin]

And how exactly a kevlar wishbone atach in the cut on the spear (in case there are no fins on it? By the way i think it is expensive for just a bar. Anyone can make it with less cost.

[foxfish]

OK Kin I will try to explain exactly what I mean.
Roller guns do not have not have much rubber to grip when you are trying to load. I think it is a good idea to fit slings that have threaded ends so you can then use a sporasub easy load wishbone. This will allow you to grip the the rubbers easily. The wishbone is not just a bar, but a complete unit with threaded ends to screw on to your replacement rubbers.

(unfortunately my computer is not allowing me to post hyper links, so any one who can post a descriptive pic of the Sporasub wishbone would be appreciated)

[Old Man Dave]

Here's the pic from the shop. It's a job to see but the wishbone has a clip that you thread the bar through and then you load by pulling on the bar. Like Foxfish says it gives you another 6 inches of reach because you're pulling from behind the wishbone not pulling on the rubbers in front of the wishbone.

Dave

[Kin]

I see....
In this case i will use a simple bar that pass trough the kevlar knots of the bands.

[poacher]

If using a dynema/kevlar bridle I think you would need to have 2 loops of Kevlar on your bridle something like what is called a comp bridle in Australia to use that bar to help you load otherwise the bar will prevent you hooking kevlar/or dynema onto notch or fin tab the wish bone in the pick is obviosly purpose built to be pulled by the bar and hook into notch with seperate part.http://www.spearfishing.com.au/shop_...4jiee3qggtqr57
Peter

[Dan Man]

Funny you should mention comp bridles, at work today (adrenaline) I made up 30 of the little buggers ;D