Hi,
Is it normal that a pellet probe goes back by about 1mm in the last phase of a cocking handle closing?
Thanks!
Is it normal that a pellet probe goes back by about 1mm in the last phase of a cocking handle closing?
Thanks!
I think it is not related to the probe itself. Just have a look.
No, not in my experience. The probe stops moving forward a tad before the end of the forward cocking stoke of the cocking lever, before the lever is fully closed but shouldn’t go backwards. Check to see if you probe attachment grub screw is tight.
Thank you. Hande, it seems that your behavior is the same. Actually, there is a problem, at least in .30 cal. When the probe goes back a little it covers the transferport by a tiny bit. I have a borescope and I can check that. We may loose some speed because of that.
Install the Huma pin probe and no more worries
Its normal for the probe and cocking block to go back a bit after fully shutting. That is due the the rubber ball in the front pushing it back out to lock it. If it ain't broken, leave it alone. Smh
Hande, do I need to disassemble the gun to make the adjustments?
Its normal for the probe and cocking block to go back a bit after fully shutting. That is due the the rubber ball in the front pushing it back out to lock it. If it ain't broken, leave it alone. Smh
This is the correct answer.
Yes there is a slightly over centre locking mechanism. As you close the block it push’s again the small rubber ball/balls in the block. This give some pressure back to keep the the block locked behind centre.
Without the rubber ball and back pressure it falls open.
It has nothing to do with the probe.
Actually, there is a problem, at least in .30 cal. When the probe goes back a little it covers the transferport by a tiny bit. I have a borescope and I can check that. We may loose some speed because of that.
Thank you. Hande, it seems that your behavior is the same. Actually, there is a problem, at least in .30 cal. When the probe goes back a little it covers the transferport by a tiny bit. I have a borescope and I can check that. We may loose some speed because of that.
You can adjust the probe exactly to the right spot by rotating the reloader bar (part B19). It has left handed thread at the other end, so when you rotate it, it moves to the desired direction. First make a rough adjustment by rotating the pellet probe guide (part B12) so that it is 44,4 - 44,7 mm from the rear of the block.
Be careful not to tighten the B19 too far in to reloading block, because it will squish the plastic sleeve inside the reloading block!
Assuming all adjustments are correct so the center of a factory TP on the pellet probe is directly centered and in line with the barrels port, one can either dremmel out a bit more at the front end of the probe’s opening to get rid of that concern.
actually the best way to find out, is to close the cocking handle all the way forward, release it so it settles, go back to the mag well opening, and take a fine point scratch awl and run it against the edge of the barrel where the probe is at. Scribe a mark around the probes circumference.
remove your barrel, remove your probe, insert the probe into the barrel and place your scribe mark against the edge of that barrel and look at your transfer ports. What I just explained will tell you for sure 100% if your transfer ports are all lined up perfect. When I received my used impact(or new) that’s the first thing I did was to check that, but I used a mechanical pencil, that way if it was off I can make the necessary adjustments. The scribe method is more of a permanent indexing mark, so at anytime I have to take my Impact apart, I can always reference that mark from the mag well with the cocking handle closed, to make sure all ports are lined up 100%. On two other impacts that I worked on I did just that, so the owners always can reference that mark.
i also did that scribe mark on both my wildcats. It just makes perfect sense to.