I decided that I needed a bit of challenge in my life so decided to built the internal linkages for a Savage percussion revolver. Hopefully the attached photos will show how the gun works
In a nutshell the ring trigger is actually a lever which raises the toggle linkage inside the gun. That allows the spring loaded cylinder to come back and rotate. In the forward position the cylinder indexes on the end of the barrel and there is a shallow recess in the front of the cylinder for that purpose. As the toggle hinges upwards, the hand (which is fastened to the linkage) swings up and hopefully rotates the cylinder. The front half of the toggle linkage is fairly fussy in that if it is too long the toggle is partially V shaped upwards and if it is too short, the linkage is straight but there is quite a gap between the cylinder and the end of the barrel
There are two flaws in the system; one is that you require very strong hands to bring the ring trigger back and both #### the hammer and rotate the cylinder. The second is that if the ring lever is not all the way forward, the toggle is slight V'd up and under recoil (of firing) the cylinder comes back, the hand starts swinging up, but there is too much inertia for it to rotate the cylinder and so the tip of the hand can break off
The spring inside the cylinder is a spiral wrap of flat wire and to make it, I started with some spring wire and heated it red hot then forged it flat to approximately the thickness of the original, then spiral wrapped it around a mandrel. First attempt the flat wire was too wide so I ended up unwrapping it and grinding the wire down to about 1/2 of its first width and then spiral wrapped it again and retempered it
cheers mooncoon
In a nutshell the ring trigger is actually a lever which raises the toggle linkage inside the gun. That allows the spring loaded cylinder to come back and rotate. In the forward position the cylinder indexes on the end of the barrel and there is a shallow recess in the front of the cylinder for that purpose. As the toggle hinges upwards, the hand (which is fastened to the linkage) swings up and hopefully rotates the cylinder. The front half of the toggle linkage is fairly fussy in that if it is too long the toggle is partially V shaped upwards and if it is too short, the linkage is straight but there is quite a gap between the cylinder and the end of the barrel
There are two flaws in the system; one is that you require very strong hands to bring the ring trigger back and both #### the hammer and rotate the cylinder. The second is that if the ring lever is not all the way forward, the toggle is slight V'd up and under recoil (of firing) the cylinder comes back, the hand starts swinging up, but there is too much inertia for it to rotate the cylinder and so the tip of the hand can break off
The spring inside the cylinder is a spiral wrap of flat wire and to make it, I started with some spring wire and heated it red hot then forged it flat to approximately the thickness of the original, then spiral wrapped it around a mandrel. First attempt the flat wire was too wide so I ended up unwrapping it and grinding the wire down to about 1/2 of its first width and then spiral wrapped it again and retempered it
cheers mooncoon
