That last (15th) pump only gave 4 fps.... Perhaps you are getting valve lock?.... Try dry firing it after taking the shot and see if you get a "puff" of air on the second shot....Bob
James did you open the throat of that valve also, if you did I missed that.
Slowing way down to a full one second count at the full open and again at the fully closed positions, I got these numbers (pumps/FPS):10 6659 6538 6417 6206 6165 5814 5063 440Pumping as fast as I could possible pump, I got these numbers (pumps/FPS):10 660 9 666 8 637 7 610 6 593 5 563 4 4993 472I will have to try this a few more times to parse out all of the possible data but it appears there is an average increase of 4 FPS in this attempt with the largest increase being with 4 quick pumps over the slow pumping in all other shots. This is interesting when compared to James testing up to 15 pumps:3- 4444- 5015- 5346- 5737- 5948- 6319- 64510- 65311- 67212- 67813- 68614- 70415- 708
David....Try 5 shots at 5 pumps slow and then compare that to 5 shots at 5 pumps fast.
QuoteDavid....Try 5 shots at 5 pumps slow and then compare that to 5 shots at 5 pumps fast.Rodger that. Just curious or is there a particular reason why you want to see 5 pumps?
Well it was time to do the AR conversion on my C362 # 00731 I had done an overlay of the platforms and determined it could be doable. I saw only one main deterrent, and that was where the foregrip/ pump handle overlapped the trigger guard. I was able to remove the magnet, and sand where it mounted in half, and also notched out the end around the trigger guard about 3/8" deep and 3/4" wide, so all clears and functions well. The pump arm does drop loose after a shot now so will need to reinvent the magnet I opened the ports to .180 and also the valve, also cut 2 1/2 threads off the valve cap, stayed with the OE hammer spring as it was stronger than that of the 1377 I cannibalized to make this happen. I seem to have lost velocity at lower pumps, but when I go to 10 I gett a solid 700 FPS with CPHP 14.3 gr. Ended up with a gap between the fore stock and the trigger guard, but I think some black Insta-Morph will cure that.Will add more as I tinker this one out. P.S. The 13xx fore grip holes line up but the 362 metal arm is thicker or should say longer in the area where the screws would line up, so they would need a deeper grove to possibly get them to fit. I guess Buck Rail needs to make an AR style pump handle/fore grip for theses
Everything but the valve throat is bored out to .180, transfer port is ice maker tube, did a 5 pump pressure test with muzzle held tight to a doubled up piece of inner tube, and held the bolt snug while firing held it there a second or so after the shot, and had a release of air that was being held until I let off pressure, so tp seal is good. I am leaving it pumped 8 times overnight, and test over crony, perhaps my valve thread seal is compromised and may need a wrap of teflon tape and a fresh O-ring. While I'm at that fix, I will open up the valve throat.
I was pondering if the FT had enough adjustment to work, I guess one could make it work with a little adjusting. Well I better take that cold shot with stored air
Well it was time to do the AR conversion on my C362 # 00731 I had done an overlay of the platforms and determined it could be doable....
Quote from: Back_Roads on January 28, 2022, 03:47:37 PM Well it was time to do the AR conversion on my C362 # 00731 I had done an overlay of the platforms and determined it could be doable....James,Will the 1377BR lower assembly work straight out of the box?Also, where did you get the AR adapter for the buttstock?
I'm sure it won't be long before we see these in the market. The 362 has become very popular and all the hop up shops aren't gonna miss out on the potential income this can can deliver. Me personally, Having 648Fps at 8 pumps... my 1322 with all the mods and a low volume valve can't even come close. I get more in 4 pumps with the 362 then my 1322 at 10. It's an incredible offering from Crosman. I am looking forward to seeing what you guys come up with in the FT department and how it works out. There is some serious potential there.
Quote from: Firewalker on January 30, 2022, 10:51:23 AMQuote from: Back_Roads on January 28, 2022, 03:47:37 PM Well it was time to do the AR conversion on my C362 # 00731 I had done an overlay of the platforms and determined it could be doable....James,Will the 1377BR lower assembly work straight out of the box?Also, where did you get the AR adapter for the buttstock? Yes it will. The AR adapter is an old RAI adapter I had on my 1377. I recommend the Buck Rail setup. The pistol is a good deal you get spare parts at a decent price, and maybe a side project gun too.