Colibri modification?
I have a “little” problem with my Colibri. The cocking rod, that connects the handle to the action simply broke:
And naturally as a result, the probe does not return. I am getting this fixed by KG, but after looking at the design, I do not think it will work for long. When the rod moves rearward, the cocking lever generates forces, that try to bend the rod. I can imagine, these forces are really large in semi-auto mode:
The idea is to leave the rod without a rigid connection to the rest of the action and use a coil spring to return the loading probe to front position. The spring might not fit into the original frame and may require some sort of adapter, attached to the rear side of the frame. Is this a stupid idea? Or would it work and perhaps even make it possible to use semi-auto mode without failure after a few rounds?
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Sniperqty AirGun
Of course I would not just break the rod and leave it at that 🙂
But I was thinking about something like hybrid between long and short stroke piston in some firearms. The rod would push the block all the way back, but would not be rigidly connected to it. Also the deceleration of the loading probe at end of its travel would be caught by the spring (which is no issue for manual cocking, but might help in semi-auto, where the rod moves very fast).
Can’t see the foward cocking block, that has to bottom out 65% of the load when cocking the handle close, you don’t want the total weight of the cocking block assembly and the force of you cocking the handled by the broken thread of the rod.
The cocking block has a hole for the barrel so it can side while cocking. It’s hard to see that block and the clearance — but you want the block to bottom of 1st before the probe assembly does. Even though there is a clearance of 2mm. I use to unscrew the whole breech of the rod then I measure the cocking block and rod when bottom out in the close position.
In my case the rod was obviously too short:
Both handle and the loading probe in frontmost position.
I will see how it works and when the gun is out of warranty, I may give the spring modification a chance.
And naturally as a result, the probe does not return. I am getting this fixed by KG, but after looking at the design, I do not think it will work for long. When the rod moves rearward, the cocking lever generates forces, that try to bend the rod. I can imagine, these forces are really large in semi-auto mode:
The idea is to leave the rod without a rigid connection to the rest of the action and use a coil spring to return the loading probe to front position. The spring might not fit into the original frame and may require some sort of adapter, attached to the rear side of the frame. Is this a stupid idea? Or would it work and perhaps even make it possible to use semi-auto mode without failure after a few rounds?
Wow that’s the 1st one I seen broke, it would help if you adjust the rod length so the cocking block where the cocking handle screw on to bottom out on the forward frame first instead of rod bottoming out on the lever the rod screw broke in to. if you adjust to much the probe wont seal then blow back will occur.
Viewing 6 replies - 1 through 6 (of 6 total)
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It looks like we should perhaps start thinking about that modification a bit more…
BTW: Mine is 22140005.