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Sear pin ...
No, the Ermes won't fit. The drawing you did above is not correct, because the sear rotates through the center of the pin, which means, that if you increase the pin and sear hole at the same time, you did not change the pivot at all. But if you feel like doing that, I strongly suggest that you find someone that has a lathe and stainless steel suitable for making axles. They can make you a new pin that will fit like a glove and will solve the problems that you currently have with the gun 100%. I increased the hole size because I used what I had at home as a proof of concept. Then I had my neighbor machine me a new axle from Inox/stainless steel.Anyone able to check whether ermess sub fits?
Mario is super slow to reply, but my guess there is noone compatible
If you don't feel like doing that*But if you feel like doing that
For sure the Sampson as a eurogun on steroids is based on the Hurricane "Corsair" as the Hurricane dates from at least 1949 when it was displayed on the rollergun patent using a cocking lever. That would mean the "Corsair" is actually even earlier than 1949. The Sampson appears in the later sixties.Jack Prodanovich, one of the great contributors to the sport of spearfishing and heavy equipment design for shooting big fish rather than tiddlers soon recognised the importance of curve matching in his trigger designs. He had been making guns when the sport was just beginning and his mechanisms were built using grinding tools and jigs to get around meshing problems. That meant his two piece trigger did not drive the mechanism backwards because when cutting the trigger profile the trigger piece revolved on what was the trigger pivot, the holes being cut first and all the shapes generated with respect to the holes. He knew that even the best designed forms were no good if the holes were drilled slightly out of position or they did not match the pin spacing in the housing in terms of lever separation in the housing.
One gun that was notorious for pushing the trigger mechanism backwards was the Sampson gun, a gun for big hitters that was based on an up-scaled and redesigned French Arbalete on steroids. The French gun also pushed the spear back slightly against the band pull, but mitigated it with a curved sear tooth profile engaging a matched spear tail notch whereas the Sampson had a V shaped tooth and spear tail notch. The curved notch “euro tail” is still with us today.
I've had the same problem with a Salvimar Pulse 95. It semed ok for the first few shots with one rubber. Now I'm using 2 rubber bands, 16mm and 14mm and the trigger jams so tight that I almost need 2 hands to fire it.Hey guys,
I need some more insight on your Salvimar hero/metal triggers and experience using them under loads.
Ive gotten the gun quite recently and its been a love hate relationship so far to the point I simply don't trust the trigger.
First thing first:
- the locking/safety mechanism was very hard to lock/unlock OUT of the box. Impossible to do with 1 finger. Currently I need to use shaft butt to press it.
Yes - I DONT use lock/safety ever as precaution but I find it unreasonable.
An unlocked safety was also blocking the trigger from the box, weird?
- the standard bands are 16mm 325%, for a wahoo its a bit underpowered so I replaced them with cressi small ID 14mm at 350-360% and here starts the hate relationship - the trigger become quite hard to the point that I literally dont know when it will go off and on top of that it influences the precision as you start pushing the trigger really hard...
- line release mechanism movement is hard to explain, smooth but needs pressure applied, is your experience the same?
Salvimar advertise the mech to loads up to 350kg and very smooth experience, yet I feel like im shooting my omer cayman GI completly overpowered by double 14mm.
At 350kg should easily sustain 3 bands setup...
I hope you guys can share some experiences, is it a faulty mech or thats how it is.
Better to pull it apart and see what is going on inside. It should not be jamming up.I've had the same problem with a Salvimar Pulse 95. It semed ok for the first few shots with one rubber. Now I'm using 2 rubber bands, 16mm and 14mm and the trigger jams so tight that I almost need 2 hands to fire it.
I was thinking of upgrading to the all metal mechanism and would like to know:
1/ Will the metal mech fit my Salvimar Pulse?
2/ Is the metal mech any better or will it jam too?
3/ Is there a different handle with a more reliable mechanism that will fit my gun?
Thanks guys.
I pulled it apart before my last dive. There was no sign of wear on any part of the mechanism. I did find a small amount of sand which I hoped was the cause, but alas it jammed just a badly. At one point I squeezed the trigger half way and it jammed even harder. On that dive I missed 6 shots that would usually have been almost guaranteed hits. The only fish I landed was a big drummer shot from 1 meter away. I could have got that with a handspear!Better to pull it apart and see what is going on inside. It should not be jamming up.
You should be able to check it on land. With no band load and the gun held vertical and pointing downwards pulling the trigger should cause the spear to fall out of the gun. The only gun where this will not necessarily happen is momentary action triggers where spear pull force is needed to yank the spear out unless the spear is heavy enough to drop the sear tooth which is sprung loaded. Guns such as the Carbon C4 are like that, when you push the spear tail into the sear box mouth the tooth inside is pushed down and then pops up once the spear tail notch rides over the top of it.I pulled it apart before my last dive. There was no sign of wear on any part of the mechanism. I did find a small amount of sand which I hoped was the cause, but alas it jammed just a badly. At one point I squeezed the trigger half way and it jammed even harder. On that dive I missed 6 shots that would usually have been almost guaranteed hits. The only fish I landed was a big drummer shot from 1 meter away. I could have got that with a handspear!
I've lost trust in Salvimar, unless I find another solution, I'll be buying a Wettie or Rob Allen handle to replace the Salvimar.
Does anyone have a recommendation for a handle that will fit and be reliable?
Yourtrigger is heavy, but workable. Heavy trigger isn’t a rough sear issue. I have polished a few sears, on 1911‘s, lee enfoelds etc, you name it. On Salvimar, heavy trigger is design issue. The way it is coupled with line release I think. Try this - wind up the line hard, so there is a bit of pressure on line release arm. Trigger gets lighter. I haven’t tried, but I think you might even accidentally release the shaft, by pressing on line release arm.
You have no need for concern. I am a qualified technician and have been successfully building, servicing, repairing and improving diving, spearfishing and scuba equipment for over 40 years. I'm not going to stop now.You should just replace the mechanism with a new one from Salvimar. Making changes and experimenting could result in the weapon misfiring and skewering someone. Then when asked if you had modified the weapon you could find yourself in trouble as authorities take a dim view of amateurs compromising the safety of weapons, especially when they don’t really know what they are doing. There are people who would like to get rid of spearfishing and any accident will be seized upon, so don’t give them any ammo. Having with others warded off the efforts of some to throttle the sport I know what I am talking about.
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