The DeeperBlue.net Gun Building Extravaganza - Gun Options 3 - Rail & Spear Diameter

[podge]

Originally Posted by foxfish

Sorry for any confusion, here is my definition of the the tracks.

Mart on the red gun in your avatar has that got an enclosed rail?

[spaghetti]

I'd like it to have a 6,5 millimeters. It makes more sense since we, the people, voted for a single band gun.
It would take such a hell of a very powerful single band to pull a 7mm shaft.

I would have voted for a thinner shaft, 6 to 6,3 mm, had this option been given.

[TOOmas]

wouldnt a 20mm band have plenty of power for a 7mm shaft? this is what my RA has anyways... maybe 6.5mm and an 18mm band would go nicely. i think im going to go for rail but am going to wait and see what other people with more experience have to say on the subject.

[Janner]

How easy is it to buy shark fin spears? i can easily get hold of notched spears but wouldnt have a clue where to buy a shark fin spear. If people can easily get hold of shark fin spears i'll probably be inclined to vote for the enclosed track, i figure it will be quicker to reload. However if people will find spare spears difficult to come by, it seems pointless voting for a gun that could well be out of action for quite sometime whilst the owner chases an order for spears.

[JPPLAY]

Sharkfin spears are made by basically all the major spear makers now. They are stronger then a notch shaft without adding much mass. I voted for a Railgun with 6.5 mm sharkfin shaft. The railgun because it increases accuracy over a open track and that an enclosed track seems like overkill for this short of gun.

Like spaghetti said 6 mm shaft would be great so making the gun for 6.5 mm it could also be used for 6mm to 6.3 mm.

[Pastor]

Sharkfin spears can be had from Greece no worries. Trygons make them for their enclosed track guns (yes they are state of the art Euro guns). So why do I think an enclosed 90 is a good idea? Well I hunt in the UK, so smallish fish and no real need for the 7mm spear I have sat on my Wong. Ideally if it were down to me I would just shoot a 6mm spear from a 90. I don't care what you say that will whip when fired even with 16mm bands. Seriously, how flat is the trajectory of your shaft? Consistent it might be but I doubt flat. Imagine suppressing that initial whipping! Trygons are at the cutting edge of this new concept in Euro guns, they didn't risk all on a whim. Remember these words, in no time they will be common place in European spearos hands. This is a chance I think for us all to be at the forefront of Eurogun design, how many times will that happen? Seize the moment!

[spaghetti]

Originally Posted by Pastor

Sharkfin spears can be had from Greece no worries. Trygons make them for their enclosed track guns (yes they are state of the art Euro guns). So why do I think an enclosed 90 is a good idea? Well I hunt in the UK, so smallish fish and no real need for the 7mm spear I have sat on my Wong. Ideally if it were down to me I would just shoot a 6mm spear from a 90. I don't care what you say that will whip when fired even with 16mm bands. Seriously, how flat is the trajectory of your shaft? Consistent it might be but I doubt flat. Imagine suppressing that initial whipping! Trygons are at the cutting edge of this new concept in Euro guns, they didn't risk all on a whim. Remember these words, in no time they will be common place in European spearos hands. This is a chance I think for us all to be at the forefront of Eurogun design, how many times will that happen? Seize the moment!

I don't understand. Could you please put it simple? What is, according to your view, the forefront of Eurogun design, and why?

[Pastor]

Well they are using complex shapes in moulded carbon fibre much like C4 and they are using enclosed tracks unlike most other european manufactures.

We all say don't use so and so bands on that shaft, it will be over powered! Even though a thin lightweight thin shaft that would travel at a higher velocity would be ideal with skittish small fish at a distance. Being able to tame that oscillating shaft would be something that I think would put a gun design at the forefront. It's pure simple Newtonian mathematics/mechanics

[Jonny250]

I have just changed to a 6mm spear on my 750 gun, hoping it will be quicker and a tad more range. In this context, i struggle with the logic of a wood gun (high mass / more power potential) and a thin shaft; it just don't seem right...

i like the idea of the rail gun, actually i really like the idea of a railgun, but the electrics could be suspect under water...
Railgun - Wikipedia, the free encyclopedia
"The U.S. Navy has tested a railgun that accelerates a 7 pound bullet to the speed of 7 times the speed of sound."

this could be something oh so beautiful

[Marwan]

ideally if its a single band i would go with either 6.3 and 18mm, or 6.75 spear and 20mm, both deadly combinations, depending on your target...soooo from the options above, i would go with the open track in 6.5mm which is closer to the setup of maybe the seatec gabbiano...(though the gabbiano is 6.3mm)...

[octpora]

Went 6.5 enclosed because

1; it would be different

2; a little extra accuracy never hurt (except on the tongue of an informed, sarcastic pessimist)

3; I don't have to build the sucker

4; as fish go extinct, we need the smaller spear to make sure we can harvest every last guppy in the sea

5; I have a really bad twitch in my finger and it tells me where to stick it.

[blaiz]

I voted 6.5mm enclosed track. Where I live in hawaii (and im sure I will be using this gun) A 90 is a great reef gun so I dont think you need the punch that a 7 mm will have. and like noted above, since it will be a single band gun I think the 6.5 will be a great combo. Also I have never used a enclosed track before and think it will be pretty cool

[podge]

6.5 with the enclosed track, as I haven’t got one and I reckon it’ll look the business.

[Newbie_spearo]

I voted 7mm Rail, but im thinking 6.5 enclosed, coz it sure will be fast and no shaft whip and that baby. But to be perfectly Honest I don't really care what it has as long as it has my name on it and my address on the packaging!

[Dobs]

How much power you think a single band will give to a 6.5 mm shaft that will need an enclosed track?
I don't really understand the idea of an enclosed track gun with only one band, let alone a 90 cm gun...
But anyway, it is democracy here in DB