The Deeperblue.net Gun Building Extravaganza - pre poll gun shape

[Pastor]

Kind of like in the picture below.

Marwan, there should be no more hydrodynamic affect than any other gun using the cuttlefish shape, the muzzle would still be quite thin. Just the side profile would be much mor streamlined with the bands at least partly sunk into the wood. Maybethe whole thing could be kept straight with raised sides?

[ILDiver]

Perfect Pastor, I concur. But can we make it more of an US urban style gun? I'm thinking some gold 24" spinner rims. Maybe a good H2OAudio sound system that will rattle the shaft with the bass.

Seriously though, that shape is on the lines of what I was thinking. Raised center channel, slight downward angle on the barrel. Rounded low profile bottom. Maybe round back up on the edges to give it side protection of the bands, that might help stop the bands from vibrating when swinging it side to side??

[Pastor]

Originally Posted by ILDiver

Maybe a good H2OAudio sound system that will rattle the shaft with the bass.

OK but wouldn't a mini disc be better then we could insist that it played Handle's water music

Originally Posted by ILDiver

Seriously though, that shape is on the lines of what I was thinking. Raised center channel, slight downward angle on the barrel. Rounded low profile bottom. Maybe round back up on the edges to give it side protection of the bands, that might help stop the bands from vibrating when swinging it side to side??

Yeah That's where I'm coming from!

[blaiz]

Originally Posted by ILDiver

Maybe a good H2OAudio sound system that will rattle the shaft with the bass.

Maybe we could find an audio cd that has some fish mating calls on it too!

[Marwan]

steve you should patent that "shark's ass barrel"
i may be a bit confused as to what you mean abut the barrel.....but i do like the raised sides to prevernt band vibration idea...need to make sure it wont afect loading though..

[ILDiver]

The part about the barrel, my thinking very well could be flawed but... The track is enclosed so there is less tab for the wishbone to "hold" on to. It seems that if the barrel where the band is resting was flat, as the band goes back to it's thicker unstretched state, then the wishbone would come off the tab even sooner. So basically, the angle in the "band track" would not be great, just enough to compensate for the change in the bands diameter.

I like the idea of the Hammerhead guns and the Omer muzzles that keep the bands inline with the shaft. It just seems it needs a little angle to keep the wishbone centered and pulling straight as long as possible.

Was that too confusing? I don't know how to say it real simple.

[Pastor]

Yeah, the bent arsed shark gun

Every enclosed track gun has a flat top just like this one, take a look at the spearotiki links to see. It's just friction and the sheer rate of acceleration that keeps the wishbone on the fin. I did say in one of my first posts about this that the raised sides would need to be dropped by the fins to enable hooking the wishbone onto the fins. The bands can still be kept in line by using vertical holes for the bands at the muzzle or by using a simple band elevator.

This is just a topic for discussion, it may be crucially flawed somewhere but lets see some more ideas coming in. Everybody must have some input they could give, it doesn't matter how small nor does it matter how much knowledge you have of gun building, it's just ideas and they all count. Let's try and come up with something that breaks a bit of ground here! If this just ends up like an Omer or C4 clone I'm not even going to enter the competition to win it. If the whole of deeperblue can't come up with anything other than a clone then there is nothing to be gained here So let's see those ideas

[podge]

Pastor mate and all the others that are coming up with the ideas for this gun I SALUTE you all.
I’ve had several cups of coffee go cold on me and even more half broken biscuits fall into said coffee while being dunked while I’ve been reading these pages.
I’m sorry gents but Speargun Design just isn’t one of my strong points although I sometimes wish that it was.
So as for ideas I’m afraid that I have none to offer, but I can say that the whole gun building process so far as been enlightening to say the least, so come on guys keep it up as some of us mear mortal spearfishers are really enjoying the whole process and although we have near zero input I’m sure that with the wealth of knowledge on here the gun WILL turn out to be something very special indeed.

[ILDiver]

Well Pastor, now we are back to your original design I like it, but I am still trying to raise the center track like 3mm.

I wonder if the enclosure would have to drop off sooner too. So that it does not bunch up inside of it's track?? Otherwise it might push out the top? Depends on the amount of space onside the well I guess.

[Pastor]

I think I the barrel will have to narrow towards the front otherwise it will be an oar in the water. The guns I make are like that, whilst being fantastic for the long shots they are cumbersome sometimes when trying to manoeuvre vertically. If it did narrow then keeping the bands tight into the sides up until the point that the bands slacken would stop chatter and keep the pull downwards by shaping its supporting surface

[ILDiver]

It's already supposed to be tapered. So I think in my mind I have settled on the way I roughed it out The bands would be open the last 8 - 12 inches before the muzzle I think that would highlight the taper a bit too. Kind of a formula 1 car look from the front. I'd keep the butt end wider, like the Sea Sniper guns.

Unless it was carved like a totem pole or something...maybe a carved dragon that fires a spear.

[foxfish]

Guys I hope we can get a new "Gun shape" poll going very soon but we need to establish what we will be voting for?
Pastor has something going here & I agree with his sentiments on building a clone!
The trigger thread is still going & will most likely carry on until we start a new poll, so can we get 4 or more suggestion together to put on the new poll? If possible, can we also discuss the terms used to describe the possible shapes - cuttle fish for instance, can we clarify what that means?
My point is if I start a new poll I want to make sure everyone understands the descriptive terms used in the poll.

[Marwan]

fox, i wouldnt want this to be a clone either, but in all fairness, we need to give some options to the voters, im sure that some people who voted for a single 90, are looking for something they are used to, like a regular tapered or circular barrel...so i say we keep those 2 as options, then drop in a couple of more options that are "non-standard" such what pastor has sketched above...
pastor...i like the design , though for a single 90 i feel that taper is a bit too wide for vertical motion, maybe narrow it down a bit?

[Pastor]

Originally Posted by Marwan

fox, i wouldnt want this to be a clone either, but in all fairness, we need to give some options to the voters, im sure that some people who voted for a single 90, are looking for something they are used to, like a regular tapered or circular barrel...

This I thought was the chance for anyone to voice an opinion prior to it going into a poll. If anyone wants any particular features then discuss it or suffer in silence. You guys can only offer for poll what people suggest or request.

Originally Posted by Marwan

pastor...i like the design , though for a single 90 i feel that taper is a bit too wide for vertical motion, maybe narrow it down a bit?

The design was only a wild idea but I imagined it to be of a similar size and profile to the C4 or Omers just with hidden bands and the barrel bent to maintain the strength that otherwise might be lost by recessing the track. Either way it's open for discussion or even the boot.

[deeperthanblu]

The gun needs to be narrow near the wishbones in the horizontal plane because otherwise the bands will stack up vertically there. This will make it hard to pull the bands down on the wish bones, and make them tend to pop off on launch.

It needs to be narrow near the muzzle in the vertical direction for tracking. A tapered barrel is OK as long as it gets reduced back by the wishbones.