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All About Guns What's your weapon of choice, and why? Discuss the beloved speargun here! |
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#31 |
Registered User
Join Date: Jun 2010
Posts: 74
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Re: Travel Rollergun Build
I was able to dive for a couple hours this weekend but the vis was poor and not much life. I took a couple calico and the gun worked great. Only downside I need to try to address is that it's a little muzzle heavy.
Hopefully I can get some video footage soon |
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#32 |
Registered User
Join Date: Dec 2007
Location: Quito Ecuador
Posts: 404
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Re: Travel Rollergun Build
That is amazing work.
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#33 |
Registered User
Join Date: Apr 2014
Posts: 610
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Re: Travel Rollergun Build
If I were to have guessed one end was heavier I would have guessed the butt end with the dowels and all on that half. You going to do anything to fix that, or is it not too bad?
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#34 | |
Registered User
Join Date: Jun 2010
Posts: 74
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Re: Travel Rollergun Build
Quote:
Both ends were too negatively buoyant originally. I replaced the stainless trigger mech pins and roller axle with carbon fiber rod. I also made a foam loading pad that fixed the back end. I'm going to try to replace the stainless dowels with carbon fiber which should fix it. If/when I build another, I think carbon fiber dowels would be the right way to go. Other option would be keeping more wood which somewhat goes against the purpose of small, traveler gun. |
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#35 |
Registered User
Join Date: May 2009
Posts: 3,185
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Re: Travel Rollergun Build
I think for the dowels Ti64 would be a good alternative to CF or SS. It is very light and very strong. I don't know but CF for rods that will be removed and installed many times seem like not the best.
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#36 | |
Red Sea...Rocks!
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Re: Travel Rollergun Build
Quote:
Thanks. What was the length of the dowels? I will go a different direction to ensure i don't have issues with alignment. You were lucky ![]() ![]() Jamil |
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#37 | |
Registered User
Join Date: Feb 2009
Location: Weston, FL
Posts: 1,594
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Re: Travel Rollergun Build
Quote:
__________________
Jose G. ---Dive Safe--- |
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#38 | |
Registered User
Join Date: Jun 2010
Posts: 74
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Re: Travel Rollergun Build
Quote:
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#39 |
Registered User
Join Date: Jun 2010
Posts: 74
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Re: Travel Rollergun Build
That would probably do the trick. Hoping I can correct it without cutting into the stock though. As-is, it's probably not enough of a problem for me to do that.
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#40 |
Red Sea...Rocks!
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Re: Travel Rollergun Build
you have gotten me thinking a lot on this man
![]() Did you leave any clearance/tolerance between the dowel and sleeve? am worried that if i make it a perfect fit, it wont let air go out when inserting the dowel inside the sleeve! (think like pneumatic pump concept, which holds oil inside the sleeve). did you consider permanently epoxying one side of the dowels to one half of the gun (without the sleeves)? this way you will minimize chances of loosing the dowels during transportation and make it quicker to install. Am thinking of going this direction but worry on loosing structural strength by eliminating the sleeves from one side! I might go with 6" long dowels. any thoughts? By the way if you want i can create a new thread for this (not to high jack your post) but i thought it would benefit readers who check your post. what do you think? thanks, Jamil |
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#41 | |
Registered User
Join Date: Jun 2010
Posts: 74
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Re: Travel Rollergun Build
No worries on high jacking the post. I like this sort of discussion.
To your questions The dowels and sleeves were very tight when installed. So much that they make a vacuum popping sound when you pull the gun apart. It wasn't enough to prevent it from working smoothly though. I suppose you could cut/grind a small groove down the dowels to ensure there isn't a problem. I did epoxy one side of the dowels into the gun. They are permanent on the back piece. My thinking was the same as yours here in that it keeps things simple. Also, I have dowels AND sleeves permanently fixed in the rear half of the gun so you could go that route if you're worried about strength You mean 6" dowels on each side? Or, 6" total? In my opinion, either would be overkill. I have cut mine down to about 1.5" exposed and it makes no difference from the 3" exposed. Now, if this weren't a rollergun, I might want a little more dowel length. Hope this helps! Quote:
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#42 |
Red Sea...Rocks!
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Re: Travel Rollergun Build
Very much so Otolithco, thanks .
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#43 |
Registered User
Join Date: Jun 2010
Posts: 74
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Re: Travel Rollergun Build
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#44 |
Red Sea...Rocks!
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Re: Travel Rollergun Build
Great catch. How's the gun performing? Any valuable learning, comments you fix it recommend after trying your gun?
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#45 | |
Registered User
Join Date: Jun 2010
Posts: 74
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Re: Travel Rollergun Build
Quote:
Something to think about is the bottom-rear wishbone catch. This connection will be shock loaded over and over. My connection here raised slightly at first but hasn't failed. I took a very simple approach to these but I'm sure there are several methods. Good luck and keep us posted |
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