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All About Guns What's your weapon of choice, and why? Discuss the beloved speargun here!

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Old 08-03-2020, 02:47 PM   #1
renepotvin
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Talking New roller prototype, a lot of shooting of stuff lol

I made this speargun using cloth-line rollers and a cedar plank... and it shoots great!

I rather like the result. I'm working on a 120 cm version in iroko.

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Old 08-03-2020, 09:50 PM   #2
manoa matt
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Re: New roller prototype, a lot of shooting of stuff lol

I hear you, that's why I make my own. If you have the tools, you can make them any size to fit the barrel without having the rubber drag on the barrel. Also I like to keep it simple, a material with a high coefficient of friction pared with a polished axle is good. The pully only revolves a few times during the shot, it's not like a ball bearing on a motor shaft that has to spin constantly at high RPM's. Water between the axle and roller provides the lubrication.

You made a gun a number of years ago that I absolutely love the design of, very mechanical in nature. Of course, who can forget the T-bar speargun.
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Old 08-04-2020, 08:27 AM   #3
diveincanada
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Re: New roller prototype, a lot of shooting of stuff lol

Quote:
Originally Posted by manoa matt View Post
I hear you, that's why I make my own. If you have the tools, you can make them any size to fit the barrel without having the rubber drag on the barrel. Also I like to keep it simple, a material with a high coefficient of friction pared with a polished axle is good. The pully only revolves a few times during the shot, it's not like a ball bearing on a motor shaft that has to spin constantly at high RPM's. Water between the axle and roller provides the lubrication.

You made a gun a number of years ago that I absolutely love the design of, very mechanical in nature. Of course, who can forget the T-bar speargun.

Love that green translucent roller !!
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Old 08-04-2020, 06:44 PM   #4
renepotvin
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Re: New roller prototype, a lot of shooting of stuff lol

I'll make a tbar triple roller for you guys
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Old 08-05-2020, 05:59 AM   #5
Mikel_24
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Re: New roller prototype, a lot of shooting of stuff lol

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Originally Posted by renepotvin View Post
I'll make a tbar triple roller for you guys
Holly crap! That is something worth seeing!

Great roller by the way...
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