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All About Guns What's your weapon of choice, and why? Discuss the beloved speargun here! |
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03-11-2014, 05:44 PM | #46 |
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Re: Quad Roller Tuna Cannon
but to further kyle's point, isn't all of the force horizontal and would only act to compress the stock? for the muzzle to snap and fly back, wouldn't you need a vertical force component?
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03-11-2014, 06:10 PM | #47 | |
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Re: Quad Roller Tuna Cannon
Quote:
For a visual think about siting next to that gun with 800# of plate weights balanced on top of it . Phil |
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03-11-2014, 06:21 PM | #48 |
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Re: Quad Roller Tuna Cannon
good image. got it, thanks.
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03-11-2014, 06:28 PM | #49 |
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Location: North Miami, Florida
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Re: Quad Roller Tuna Cannon
I want to see it finished.
__________________
Marco A bad day fishing is ALWAYS better than a good day at work |
03-11-2014, 07:40 PM | #50 |
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Re: Quad Roller Tuna Cannon
Me too just use the thinner bands or only 3 rollers
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03-11-2014, 08:16 PM | #51 | |
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Location: Venice, FL
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Re: Quad Roller Tuna Cannon
Quote:
If I am not mistaken, hardwood can normally handle being loaded with roughly 600lbs per square inch of cross sectional area. A 2x3 piece of wood with a 6 inch cross sectional area should tolerate 3600 lbs of direct force. If you play it safe with a 3-1 safety factor that is still 1200 lbs. I would still wrap it in carbon so I could sleep at night but unless I am wrong with my math it should be perfectly fine??? |
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03-11-2014, 09:28 PM | #52 |
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Re: Quad Roller Tuna Cannon
Something to read: http://www.woodworkweb.com/woodwork-...strengths.html
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05-20-2014, 09:23 AM | #53 |
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Re: Quad Roller Tuna Cannon
Wow, thanks for all the responses guys. I've just been through a ridiculously busy period of life, but have had time to start playing with the gun again. Point taken r.e. carbon wraps. It has taken a fair bit of consideration and re-design but I have shaved back a bunch of timber to accomodate the carbon wraps. I am going to end up with 15 layers of carbon in total - aiming for approx 3mm thick laminate which should well and truly provide the strength needed to keep the gun rigid and safe. I will also be using 14mm bands to start with and go from there.
This project is certainly taking time but I am enjoying it every step of the way Last edited by eightythree; 05-20-2014 at 09:47 AM. |
05-20-2014, 09:25 AM | #54 |
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Re: Quad Roller Tuna Cannon
The way the rubbers sit on the bottom
Last edited by eightythree; 05-20-2014 at 09:36 AM. |
05-20-2014, 09:41 AM | #55 |
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Join Date: Feb 2014
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Re: Quad Roller Tuna Cannon
The thinned out muzzle to make way for carbon wraps - yes it is thin! but don't fear there will be 15 layers of carbon hugging this!
the vacuum bag putting down the first few layers! the first look at the carbon rails! still a long way to go but progress to being made finally, thanks for the input again guys. |
05-20-2014, 10:34 AM | #56 |
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Re: Quad Roller Tuna Cannon
Looks sick
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05-20-2014, 10:54 PM | #57 |
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Location: louisiana
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Re: Quad Roller Tuna Cannon
that looks absolutely insane man! i hope it turns out as good as it looks now
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05-20-2014, 11:45 PM | #58 | |
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Re: Quad Roller Tuna Cannon
Quote:
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05-20-2014, 11:57 PM | #59 |
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Join Date: May 2008
Location: Orange Beach, Alabama
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Re: Quad Roller Tuna Cannon
Amazing build! Can't wait to see the rest of it!
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05-21-2014, 09:00 AM | #60 |
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Join Date: Nov 2010
Location: Moorpark, CA
Posts: 954
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Re: Quad Roller Tuna Cannon
This is one of my favorite threads. I'm looking forward to seeing the final product!
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