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Beuchat Marlin Revolution

Thread Status: Hello , There was no answer in this thread for more than 60 days.
It can take a long time to get an up-to-date response or contact with relevant users.
I would have liked more refinement in a gun design whose concept go's back
to 1949 or possibly or earlier.

The fit of the spider bands and link to primary band, lay under the gun in a exposed profile that would increase horizontal sweeping resistance of the barrel.

Three bands are still being handled and cocked to propel a 7mm shaft from
a 120 cm gun to ordinary ranges previously accomplished by more conventional designs.

I have very much respect for Marc Antoine Berry as great spearfisherman
though.

Cheers, Don
 
Good points but the text comments on very good accuracy & the vid shows very low recoil.
Yes the design is not new but a production roller gun that has been well built & safety tested is not every going to be cheap either = euro 750!
 
Reactions: strangelove
Yes the design is not new but a production roller gun that has been well built & safety tested is not every going to be cheap either = euro 750! Quote FoXfish.

I think the price reflects the complexity of the bits and manufacture time
along with a limited clientele base.

If had a extra 750 E I would love to hang one under the 1950 compound
lever roller I have on the wall.

Please someone buy one, I want to see some user feed back.

Cheers, Don
 
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seen one in the flesh. very well built but also very bulky and complex to load, much faster with a traditional multi rubber layout.

cool gun though. for the money and what it is designed for (bluewater hunting) i'd prefer a sea sniper or something similar

DD
 

Did you get to cock it in the H20 ?
Thanks. Don
 
Nope, the guy was sponsored by Beuchat and wouldnt let it out of his grip, he reckoned it shot "awsome" and and "double" the range of any other gun out there.

mindyou he lives and breaths the brand and has experience with 3 brands of gun in total Rob Allen, Beuchat, Cressi so none of the others have a true BIG gun so not much of a comparion really. i reckon a well set up conventional gun would work as well and be less hassle in the water. the cam system with the extra 2 smaller rubber is free floating and not attached to the stock in anyway so would wabble like crazy underwater!muzzle dsign was clever ut VERY bulky and the spear was stil a prototype with a slide ring rather than the line attached to the spear as per a normal gun. it will definetly shoot fish but i dont believe it is better at the designed job than other guns already existing at half the price. mind you the way the carbon and wood were put together in the stock was VERY impressive and a credit to the builder.

i think roller gun have potentail but i really think the advantage of a roller gun should be faster loading with still large amount of power and there is no way this is faster to load than a traditional 3-4 rubber gun.

internal system for the under side i thinkis the key to reduve bulk and drag in the water.

DD
 
internal system for the under side i thinkis the key to reduve bulk and drag in the water. QuoteivingDane

That is just what I was Telling a friend, a deep channel in the bottom and two single mega bands cocked one at a time with a spectra loop to latch.
Cheers, Don
 


OOOps couple too many beers when i finished writing that, Damn these forums not having spell check!

internal tube similar to the tubes for ballast for seasniper.

with the rubber attached to a rolling pully inside the tube (teflon rollers?) then another band attahced to that, would allow to load first 20mm band like usual then second 20mm band backwards towards the triggermech and onto a recessed loading notch of some type, LOTS of power and more compact, also reduce the chances of cutting the rubber on in coral or rocks etc on the bottome while hiding in wait.

DD
 
You all have very good points, but this first thing that cross my mind, was why is he rigging the gun while in the boat. Probably the reason Don mention. But I also agree with fox it is nice to see something like that available even though I am not buying.
 
internal tube similar to the tubes for ballast for seasniper.
Quote: DivingDane

But then the band would have to displace the water from the tube end's as
it returns to larger cross section. OK I'm done:friday
Don
 
Have you guys watched the vid in the first link, it is near the bottom of the link page.
 
hmmmm good point, maybe vented tube to reduce the hydraulic breaking effect, or just ensure the tube diameter is greater than the rubber at full compression. to reduce hydraulic drag. also jsut realised that having the rubber coupling inside a tube would probably also make changing the rubbers more difficult.

would need some more thought, may play with this a bit when i have a chance and see if my feeble brain can come up with something else. deep routed track sounds like a good base maybe with a removable cover to conceal the system?

DD
 
I enjoyed seeing Affertus's work and design's, and that shaft in the timber
made be flash back to some fun but dangerous times long ago.
Cheers, Don
 
It seems that energy out can only be equal to energy in, minus efficiency losses. So, if you want more power, you either need to expend less force over a greater distance (loading multiple easy bands or the equivalent) or you have to expend greater force over less distance (a single thick band). Ratchetting mechanisms, or compound rollers don't fundamentally alter this. They just change the way the force is applied.

BUT . . . The human body is not engineered to exert equal force throughout the entire loading stretch. The leverage that the muscles can exert on the skeleton changes through a range of motion. The Nautilus weightlifting machines pioneered the idea long ago of using an excentric cam to get the muscles to work with equal effort even as the leverage changed through the exercise. So for our example, can you pull with the same force when you first grab the bands, as you can half cocked, as you can right at the loading tab?

SO . . . I have often wondered if you could combine a roller gun with a cam like that of a Nautilus or compound bow, so that you could tailor the loading effort to the individual. Design the cam so that every inch of the band stretch effort FELT the same to you. By doing that, you would be able to put the maximum effort into the loading process that YOU are capable of. More in, more out.

Merit? Stupid? Don Paul already tried it?
 
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Reactions: Vov, Don Paul and DivingDane
i like your thinking, never thought of bows enough to relate to spearguns.. odd really used to bow hunt a fare bit when i was living out west, dont no why this didnt come to mind, nice idea!

DD
 
Merit? Stupid? Don Paul already tried it? Quote: Tin Man

No.... I'm a purist when it come to bows and spearguns.
John Warren and I talked about it, I striped out a few cams from flee-market
bows than I became consumed with double shaft work and lost any focus
on other gun projects.

Now if we can just get it all into a dry tube.

Cheers, Don
 
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