If you over power a roller gun, the wishbone will "flip" the tail up as the shaft is exiting the muzzle. This causes the nose to go down and shot will be low. You need to reduce pre-stretch so that when the bands release the shaft there is no force at the wishbone pulling the tail of the shaft. You might lose some power, but at least your shot will be flat. Also try connecting the shooting line to the rest tab shark fin ... that gives much more stable shaft flight.
Hey brother I know this video is a little old but after struggling with a very near situation with a MVD roller Zesso that I bought shooting a foot and a half low and a foot to the right I had to become a expert on these damn guns. Majdq8 is certainly the most expert person or very near to it and he has already commented. He is correct on a roller or any gun you want to rig the line to the rest tab. However to maximize the true power of a roller and make them worth the extra effort three things must occur. You must use special rubber number one. Salvimar acid green s400 in 14mm is what I use on all my rollers but you can use the following : Manny Sub progressive, and the primeline copy of the salvimar acid green and I have been told that the spearpro green over black in 14mm is also a good choice for a roller. Second and this is the most important part you need full pre tension. Period. You need to have those rubbers stretch all the way down the underside of the barrel. The way that gun is rigged right now it is basically a standard gun you receive no benefit from partial pretention other than being able to adjust after band break in period. Lastly and to me it is what corrected my issue and turned my guns into a laser beam and I wont go without them and it makes the roller gun worth it above all others in my opinion is you need and uneven wishbone. You need two wishbones and you need the first wishbone tight I mean a inch in a half wide to keep those rubbers above the roller wheels after it is shot, you need it tight as a drum. You hook your sharkfin to the long leg of the wishbone so when the smaller wishbone hits the muzzle rails it completely releases the second wishbone off the sharkfin without disruption of the shaft and it will shoot straight like a laser this uneven wishbone allows you to overpower the gun as much as you can physically load making it far more powerful than a out of the box standard setup without loss of accuracy. One thing I have learned owning a private lake and being able to test guns of mine and friends whenever I want is NO guns with the exception of maybe two that I have seen (A jbl euro woody and a red tide railgun) are set up properly from the factory and by set up properly I mean hit the bullseye and group like a normal rifle that you would use to say hunt deer. You want same holes or holes touching to be adequate especially for shooting reef fish. Accuracy is everything in this game at least to me. Roller guns have a bad reputation and for good reason because almost none are set up correctly or tested from the factory (the exceptions would be the guns that have enclosed track like the mako and pathos sniper roller as the track solves all these problems at the cost of a loss of velocity). But a properly set up roller in my experience and personal testing will outshoot any gun in it's size class in range and accuracy (lower recoil and lighter spear with less flex when compared to larger standard guns). You do those things I listed with proper bands it will shoot like a laser and it will be faster to load than a standard two band gun if you put a pigtail on it so long as it is under 110cm and you have long enough arms anyways. Hope this helps anyone who is in the same boat I was.
@@gavinchildress6246 I did get it shooting like a laser beam after a shit ton of tweaking. But I had to do four things. First I took that prime-line rubber and threw it in the trash. That is not a roller gun rubber unless it is the prime line green with black interior. So I switched to salvimar acid green at 380-385%. I did and uneven double wishbone that doubles as a loading grip. Lastly I polished the line release and it is a precision instrument now. However the new MVD zesso guns (V2) or version 2 already have the double uneven wishbones and are tuned correctly. However they are still using prime line rubber and that would be my only complaint about the version 2. People think prime line rubber is the best. It is, just not with mid-small roller guns (anything 110 and under). Worst case scenario you have to get a rob allen carbon notched spear and progressive rubbers. They tried using the best components just in the wrong way but the version 2 is way better than my original. Get that and a pathos roller belly floater on it for 40$ and you have pretty much one of the best and lightest roller guns out.
Hello. Did you solve thus problem? I have a 95 salvi metal roller..what length should i use for underneath 3mm dyneema line between trigger and elastic bands for best performance??
I had the same problem with a Cressi Geronimo 2 but the shot was 1m lower WTF. I shot 4m from target with a 1m drop... I sold it after so many changes and money. I was looking now at the Salvimar Roller
I have heard this is very common in roller model, not only in Salvimar. I prefer 2 bands spearguns and more recently pneumatics, there is no way to go wrong.
Hello i am a new subscriber and am just curious if you solved the "10cm drop" problem? i am thinking of buying a 105 Wild Carbo Roller and i think that your problem is caused by the rubber pre tension. Upload a video of the fixed problem, would love to see it shoot straight. Greetings from Portugal
I use the monofilament line bechause i hunt i a area with sharp rocks. The m.f. line is dificult to cut on the rocks. In bluewater hount you can have only the normal line.
Blue_water that is actually exactly the opposite way round, monofilament will break easily when damaged, it is a single line, so it will break. When you have braided line and you damage it, the rest of the small braided lines will last and hold the line together. So if you hunt in areas with sharp rocks ( I do and I am never going back to mono line),just use dyneema or other braided lines
Hm I think it may be a weight issue. The metal one is heavier than the carbon one, but they are constructed the same. This means the muzzle stays dropped a little more and the shot is lower. I have carbon and haven't noticed this yet (though I haven't tested as thoroughly as you). Not sure what's to be done about it though, I hope you figured it out!
@@blue_water3888 check this first (its another solution)i ll try to find a photo because its my dive buddy's gun and due to coronovirus i don't have access www.nadirspearfishing.com/en/updates/technical-advices/328-roller-up-the-low-trajectory-solution
1st ) try to go a little bit longer on the wishbone 2nd) use a shaft that its fins (where you load the wishbone) has much less angle (the curve of the fin) i observed that the salvimar shaft you have has a quite big angle (cove) ! The problem is that the time you shaft exits the muzzle the wishbone due to slight elevation of the muzzle grips on the fin of your shaft and pushes it a little down (that makes the difference) !
Preferisco mille volte il fucile a elastici tradizionale che questi roller. Ci si mette troppo tempo per caricarlo con tutti quei passaggi della sagola che è già complicato farlo sulla terra,immagina nel fare la stessa operazione tra le onde 🌊 del mare. Non è un fucile che fa per me. Come ho detto prima a questi nuovi fucili preferisco il vecchio arbalete che non gli servono tutte queste acrobazie per caricarlo. Ciao da Max
Try to tweak your rubbers, It seems that they don’t have pretension. Better change them to 14mm(progressive) then use 330%-350% that will solve your problem 👍
Not enough pretension. For you to use 14mm small ID bands, Measure the band anchor point to the roller head, then measure the roller head back to the farthest loading tab on your shaft. Add those two numbers up and divide by 3.8 (380% band stretch) that will give you the correct length of the bands you need.
Yes it does. The "carbo" model. Opinions vary. I like carbon barrels in my regular spearguns, less stressful on the shoulders and lighter to carry. I happily use plastic bladed fins though (unlike Blue_water).
Read the Salvimar booklet that comes with the gun. It says there it is very important to rig the shooting line one-way and one-way only. You have rigged it incorrectly. I sell these guns and rig them correctly for customers, as well I have a 75cm Salvimar roller which when rigged properly is dead accurate. Life is a learning curve huh?
Hi, please make a video. Because there was not booklet!!!! I bought a new gun. And no support for the gun on the webside of Salvimar. Its like rocket science 🚀🚀
I had a long reply outlining my struggles trying to set up this gun, I'll just shorten it with the facts. But I did spend all day testing every single way it can be rigged. Basically the manual is wrong, it shows the wrong gun (the Voodoo) in the diagrams. If you rig it like the manual says, it will tie a knot in the line every time you fire, because the Voodoo gun does not have the extra components that the roller has. The video creator is rigging it correctly, or very close. You can see in this official Salvimar video (czcams.com/video/QsQGH6xtg74/video.html) that they do it similarly. They pass the line over the shaft on the FIRST loop, not the last one like the diagram in the manual shows (they even call it the Voodoo loop, so honestly, they never even pretended it was the right way to rig this completely different roller gun). Just trying to save anyone else the frustration I went through rigging it. Maybe someday the manual will actually be helpful.
Your rigging is wrong.. you must attach the monofilament on the first fin (the fin useful to charging), or the filament will be trapped during the shoot by the dynema
arma muito bonita, porem, sistema para armar é pessimo. as minhas aqui tem um dynema que deixa sobrando elastico antes dos rollers e ainda fica uma alça para puxar. muito mais pratico.
If you over power a roller gun, the wishbone will "flip" the tail up as the shaft is exiting the muzzle. This causes the nose to go down and shot will be low. You need to reduce pre-stretch so that when the bands release the shaft there is no force at the wishbone pulling the tail of the shaft. You might lose some power, but at least your shot will be flat. Also try connecting the shooting line to the rest tab shark fin ... that gives much more stable shaft flight.
So very beautiful,hope i have that one someday
Sweet NEEDLE. BRO a reel treat..If ever I make enough money in am buying 1.
Hey brother I know this video is a little old but after struggling with a very near situation with a MVD roller Zesso that I bought shooting a foot and a half low and a foot to the right I had to become a expert on these damn guns. Majdq8 is certainly the most expert person or very near to it and he has already commented. He is correct on a roller or any gun you want to rig the line to the rest tab. However to maximize the true power of a roller and make them worth the extra effort three things must occur. You must use special rubber number one. Salvimar acid green s400 in 14mm is what I use on all my rollers but you can use the following : Manny Sub progressive, and the primeline copy of the salvimar acid green and I have been told that the spearpro green over black in 14mm is also a good choice for a roller. Second and this is the most important part you need full pre tension. Period. You need to have those rubbers stretch all the way down the underside of the barrel. The way that gun is rigged right now it is basically a standard gun you receive no benefit from partial pretention other than being able to adjust after band break in period. Lastly and to me it is what corrected my issue and turned my guns into a laser beam and I wont go without them and it makes the roller gun worth it above all others in my opinion is you need and uneven wishbone. You need two wishbones and you need the first wishbone tight I mean a inch in a half wide to keep those rubbers above the roller wheels after it is shot, you need it tight as a drum. You hook your sharkfin to the long leg of the wishbone so when the smaller wishbone hits the muzzle rails it completely releases the second wishbone off the sharkfin without disruption of the shaft and it will shoot straight like a laser this uneven wishbone allows you to overpower the gun as much as you can physically load making it far more powerful than a out of the box standard setup without loss of accuracy. One thing I have learned owning a private lake and being able to test guns of mine and friends whenever I want is NO guns with the exception of maybe two that I have seen (A jbl euro woody and a red tide railgun) are set up properly from the factory and by set up properly I mean hit the bullseye and group like a normal rifle that you would use to say hunt deer. You want same holes or holes touching to be adequate especially for shooting reef fish. Accuracy is everything in this game at least to me. Roller guns have a bad reputation and for good reason because almost none are set up correctly or tested from the factory (the exceptions would be the guns that have enclosed track like the mako and pathos sniper roller as the track solves all these problems at the cost of a loss of velocity). But a properly set up roller in my experience and personal testing will outshoot any gun in it's size class in range and accuracy (lower recoil and lighter spear with less flex when compared to larger standard guns). You do those things I listed with proper bands it will shoot like a laser and it will be faster to load than a standard two band gun if you put a pigtail on it so long as it is under 110cm and you have long enough arms anyways. Hope this helps anyone who is in the same boat I was.
Tnx for the big writing. You are a hero. :)
Thank you so much for this. I'm wondering if you ever got your MVD working this well? I'm thinking about buying one
@@gavinchildress6246 I did get it shooting like a laser beam after a shit ton of tweaking. But I had to do four things. First I took that prime-line rubber and threw it in the trash. That is not a roller gun rubber unless it is the prime line green with black interior. So I switched to salvimar acid green at 380-385%. I did and uneven double wishbone that doubles as a loading grip. Lastly I polished the line release and it is a precision instrument now. However the new MVD zesso guns (V2) or version 2 already have the double uneven wishbones and are tuned correctly. However they are still using prime line rubber and that would be my only complaint about the version 2. People think prime line rubber is the best. It is, just not with mid-small roller guns (anything 110 and under). Worst case scenario you have to get a rob allen carbon notched spear and progressive rubbers. They tried using the best components just in the wrong way but the version 2 is way better than my original. Get that and a pathos roller belly floater on it for 40$ and you have pretty much one of the best and lightest roller guns out.
after 45 minutes loading it your ready to go.
the weight of the shaft is obviously going to add "drop" to the shot.
Hello. Did you solve thus problem? I have a 95 salvi metal roller..what length should i use for underneath 3mm dyneema line between trigger and elastic bands for best performance??
Hi Mehmet, just watch this wideo , its good for beginners. czcams.com/video/yDIGtVYL6MQ/video.html
I had the same problem with a Cressi Geronimo 2 but the shot was 1m lower WTF. I shot 4m from target with a 1m drop... I sold it after so many changes and money. I was looking now at the Salvimar Roller
I have heard this is very common in roller model, not only in Salvimar. I prefer 2 bands spearguns and more recently pneumatics, there is no way to go wrong.
Yes, so Manufactures are selling guns with no testet in Water so a crap. Its a trick to fix this, just bend the fin on the spear to make it go up.
Yes I'll think fluent 🤙
Hello i am a new subscriber and am just curious if you solved the "10cm drop" problem? i am thinking of buying a 105 Wild Carbo Roller and i think that your problem is caused by the rubber pre tension. Upload a video of the fixed problem, would love to see it shoot straight.
Greetings from Portugal
Hi Andre, i band the fin of the spear. So there is a pull up.
What is the reason for attaching a monofilament line separately from the gun line?
If i shoot a 5kg fish, 15m unter water, i can go to the surface. The line is about 40m
The reason for that is that the monofilament line flies faster under water
I use the monofilament line bechause i hunt i a area with sharp rocks. The m.f. line is dificult to cut on the rocks. In bluewater hount you can have only the normal line.
Blue_water that is actually exactly the opposite way round, monofilament will break easily when damaged, it is a single line, so it will break. When you have braided line and you damage it, the rest of the small braided lines will last and hold the line together. So if you hunt in areas with sharp rocks ( I do and I am never going back to mono line),just use dyneema or other braided lines
The mono is usually more rigid and less inclined to tangle than reel line (that's what the Salvimar top guy said on another video anyway ;) ).
Hm I think it may be a weight issue. The metal one is heavier than the carbon one, but they are constructed the same. This means the muzzle stays dropped a little more and the shot is lower. I have carbon and haven't noticed this yet (though I haven't tested as thoroughly as you).
Not sure what's to be done about it though, I hope you figured it out!
Your only problem I will take.
i ve had the same problem try to make your dyneema wishbone 2,5 -3 cm longer ,magic will happen regarding the accuracy in rollers.
Take a picture please or make a video. ;)
@@blue_water3888 check this first (its another solution)i ll try to find a photo because its my dive buddy's gun and due to coronovirus i don't have access
www.nadirspearfishing.com/en/updates/technical-advices/328-roller-up-the-low-trajectory-solution
1st ) try to go a little bit longer on the wishbone
2nd) use a shaft that its fins (where you load the wishbone) has much less angle (the curve of the fin)
i observed that the salvimar shaft you have has a quite big angle (cove) !
The problem is that the time you shaft exits the muzzle the wishbone due to slight elevation of the muzzle grips on the fin of your shaft and pushes it a little down (that makes the difference) !
Preferisco mille volte il fucile a elastici tradizionale che questi roller. Ci si mette troppo tempo per caricarlo con tutti quei passaggi della sagola che è già complicato farlo sulla terra,immagina nel fare la stessa operazione tra le onde 🌊 del mare. Non è un fucile che fa per me. Come ho detto prima a questi nuovi fucili preferisco il vecchio arbalete che non gli servono tutte queste acrobazie per caricarlo. Ciao da Max
Have you ever heard about gravity?
Does the gun come with the roller and the band ?
No you have to buy it extra.
Disadvantage load assist
Burst my chest to load last notch
Hi did you manage to fix this gun or did you stop using it
I dont use it anymore. I doesnt understand how some one can build a gun und doesnt test it before serial production.
Try to tweak your rubbers, It seems that they don’t have pretension. Better change them to 14mm(progressive) then use 330%-350% that will solve your problem 👍
i will test this in our pool and inform you
Not enough pretension. For you to use 14mm small ID bands, Measure the band anchor point to the roller head, then measure the roller head back to the farthest loading tab on your shaft. Add those two numbers up and divide by 3.8 (380% band stretch) that will give you the correct length of the bands you need.
Did the sandow break when you shot ??!
No break its unfold at the last shot. 20 shots before are all hits lower than aimed.
what is the price ?? can it be sent to indonesia ??
Yes, send my bitcoin i send you the gun. 😂
Does this roller come in carbon version?
You dont need carbon. Only carbon fins.
Yes it does. The "carbo" model. Opinions vary. I like carbon barrels in my regular spearguns, less stressful on the shoulders and lighter to carry. I happily use plastic bladed fins though (unlike Blue_water).
@@tonyy5482 If you once try carbon fins, you never go back to plastic fins. :)
@@tonyy5482 do you like the wild carbo? I was thinking either that or the blue camo elliptical gun but its in aluminium only.
Read the Salvimar booklet that comes with the gun. It says there it is very important to rig the shooting line one-way and one-way only. You have rigged it incorrectly. I sell these guns and rig them correctly for customers, as well I have a 75cm Salvimar roller which when rigged properly is dead accurate. Life is a learning curve huh?
Hi, please make a video. Because there was not booklet!!!! I bought a new gun. And no support for the gun on the webside of Salvimar. Its like rocket science 🚀🚀
yeah could you make a video?
What did he do wrong? Just wondering. I don't have this gun but everything looks about right.
He did it correct. Idk what this guy is talking about
I had a long reply outlining my struggles trying to set up this gun, I'll just shorten it with the facts. But I did spend all day testing every single way it can be rigged.
Basically the manual is wrong, it shows the wrong gun (the Voodoo) in the diagrams. If you rig it like the manual says, it will tie a knot in the line every time you fire, because the Voodoo gun does not have the extra components that the roller has.
The video creator is rigging it correctly, or very close. You can see in this official Salvimar video (czcams.com/video/QsQGH6xtg74/video.html) that they do it similarly. They pass the line over the shaft on the FIRST loop, not the last one like the diagram in the manual shows (they even call it the Voodoo loop, so honestly, they never even pretended it was the right way to rig this completely different roller gun).
Just trying to save anyone else the frustration I went through rigging it. Maybe someday the manual will actually be helpful.
Your rigging is wrong.. you must attach the monofilament on the first fin (the fin useful to charging), or the filament will be trapped during the shoot by the dynema
arma muito bonita, porem, sistema para armar é pessimo. as minhas aqui tem um dynema que deixa sobrando elastico antes dos rollers e ainda fica uma alça para puxar. muito mais pratico.
I DONT LIKE ROLLER SPEARGUNS,NORMAL BASIC ONES I FIND EASIER TO LOAD ....
Imagínate haciendo todo esto dentro del agua Que basura
Not a straight shot
I am Robin Hot ;)
too much work for the roller gun
Yeah, wich gun do you recommend?
@@blue_water3888 Standard one
@@tydengr Wich exactly do you recommend?