The Mellon web site sells a solid pin kit with bushings that take up the slop that the 13XX guns have. I just used his bushings with a solid pin and C clips I made myself on a 392 and 1322. I never liked the split roll pins. They are too hard on the gun driving them in & out if you have to remove them to adjust things or reseal.
I see what you mean about the piston itself allowing side to side movement of the link arm. I have Mellon pistons and Mountain Air ones and they both have that wider slot where the link pin goes through. I wonder if that was on purpose for some reason for as they both have the same wide slot. If you try the washers there let us know if it helps. The front pivot wafer like bushing from Mellon works great. You spread the forks at the pivot hole and slip it in between them to give you more solid surface contact for the pin to go through and take up the slop at the front end.
Quote from: Van on April 01, 2021, 08:53:00 AM I see what you mean about the piston itself allowing side to side movement of the link arm. I have Mellon pistons and Mountain Air ones and they both have that wider slot where the link pin goes through. I wonder if that was on purpose for some reason for as they both have the same wide slot. If you try the washers there let us know if it helps. The front pivot wafer like bushing from Mellon works great. You spread the forks at the pivot hole and slip it in between them to give you more solid surface contact for the pin to go through and take up the slop at the front end.it was probably intentional since this valve set can be used with the "760 as well as others" and the tolerances are most likely wider than the 13xx... that would be my guess.i tried spreading apart the front of the linkage and see now how that spacer goes in... thanks for that . i was afraid to try it originally but figured that was where it somehow went. i will use that on this new build with the Alchemy pin. i will probably have to grind down some wider washers at work in order to get a large enough ID for the pin... will let you know how that works out. it will probably be a couple weeks before parts come in for this build but i can use the OEM piston to get some rough measurements for spacers.
Spooner sir, Steve Corcoran has lowered the prices on his grips and grip set:https://www.scstocksandgrips.com/grips-for-saleFor me, it's Steve Corcoran or Vernon Austin.I ordered a PROD set from him for my new build.Once you get a set from either the 2 gents it's hard to settle for less
as many of you know, i have a 1322 modified carbine with 14.5" LW barrel, Mellon flat top piston/valve and max flow transfer port. i did a few chrony shots today at a tin can just to see what all of this got me. i am shooting Crosman 14.3 grain super points. so, at five pumps i got an average of about 405 FPS. it seems to be pretty consistent around that range at 5 pumps.at 10 pumps, i got 478, 450, 481. except for the middle reading, the other two were consistent. i only did the three shots as the neighbors were coming out and about enjoying the nice day. this seems a little low to me for what is in this gun, but since this .22 cal is my first... i really have nothing to compare it to. i know that Crosman says "up to 500 FPS" for the 1322 in stock form, but i guess i expected a little better for the mods i put in. there is no air retention, so i know i have the PA adjusted correctly.i dont know? what are you folks with similar set ups getting? just curious if what i am seeing is a normal range for this heavier pellet.
Quote from: Spooner on March 27, 2021, 08:15:21 PMas many of you know, i have a 1322 modified carbine with 14.5" LW barrel, Mellon flat top piston/valve and max flow transfer port. i did a few chrony shots today at a tin can just to see what all of this got me. i am shooting Crosman 14.3 grain super points. so, at five pumps i got an average of about 405 FPS. it seems to be pretty consistent around that range at 5 pumps.at 10 pumps, i got 478, 450, 481. except for the middle reading, the other two were consistent. i only did the three shots as the neighbors were coming out and about enjoying the nice day. this seems a little low to me for what is in this gun, but since this .22 cal is my first... i really have nothing to compare it to. i know that Crosman says "up to 500 FPS" for the 1322 in stock form, but i guess i expected a little better for the mods i put in. there is no air retention, so i know i have the PA adjusted correctly.i dont know? what are you folks with similar set ups getting? just curious if what i am seeing is a normal range for this heavier pellet.What kind of sear do you have on this build?I am experiencing a bit of hammer drag on my Steve Super Sear.
FWIWPicked up a few 13xx guns recently off eBay.Resealed them and the 1322 made 450 FPS with 10 pumps.Made an adjustable piston and replaced the stock breech and 10" barrel with an 18" barrel.05 pumps 414 FPS 05.44 FPE07 pumps 482 FPS 07.38 FPE10 pumps 555 FPS 09.78 FPE12 Pumps 590 FPS 11.05 FPE
Quote from: Rick67 on April 01, 2021, 06:38:02 PMSpooner sir, Steve Corcoran has lowered the prices on his grips and grip set:https://www.scstocksandgrips.com/grips-for-saleFor me, it's Steve Corcoran or Vernon Austin.I ordered a PROD set from him for my new build.Once you get a set from either the 2 gents it's hard to settle for less Absolutely beautiful work, thanks for posting the link. I'm just starting out but I'm sure I'll start making a few purchases soon enough.
Quote from: Tack Driver 10 on April 24, 2021, 12:37:24 PMFWIWPicked up a few 13xx guns recently off eBay.Resealed them and the 1322 made 450 FPS with 10 pumps.Made an adjustable piston and replaced the stock breech and 10" barrel with an 18" barrel.05 pumps 414 FPS 05.44 FPE07 pumps 482 FPS 07.38 FPE10 pumps 555 FPS 09.78 FPE12 Pumps 590 FPS 11.05 FPEThanks Ron . If you can get those kinds of numbers with just a reseal and and an 18" barrel... my 1322 with the flat top is under performing by quite a bit.
Quote from: Spooner on April 24, 2021, 02:56:51 PMQuote from: Tack Driver 10 on April 24, 2021, 12:37:24 PMFWIWPicked up a few 13xx guns recently off eBay.Resealed them and the 1322 made 450 FPS with 10 pumps.Made an adjustable piston and replaced the stock breech and 10" barrel with an 18" barrel.05 pumps 414 FPS 05.44 FPE07 pumps 482 FPS 07.38 FPE10 pumps 555 FPS 09.78 FPE12 Pumps 590 FPS 11.05 FPEThanks Ron . If you can get those kinds of numbers with just a reseal and and an 18" barrel... my 1322 with the flat top is under performing by quite a bit.The 18" barrel was counterbored and the port opened to .155", also used ice maker line for the TP.Curiosity got the best of me so this morning in the name of science, swapped in an unmodified 14 1/2" LW barrel, then a counterbored 14 1/2" Crosman barrel with .155" port.Referenced to the 18" Crosman barrel.14 1/2" unmodified LW barrel05 pumps 376 FPS -38 FPS07 pumps 448 FPS -34 FPS10 pumps 515 FPS -40 FPS12 Pumps 537 FPS -53 FPS14 1/2" modified barrel05 pumps 407 FPS -07 FPS07 pumps 471 FPS -11 FPS10 pumps 537 FPS -18 FPS12 Pumps 568 FPS -22 FPSA FT setup should make more power than my pump cup.So should get 525+ FPS with 10 pumps, ATBE.
The unmodified 14 1/2" LW barrel had a stock TP and seal from a 13xx gun.It measures .140", slightly larger than the barrel port.
The unmodified 14 1/2" LW barrel had a stock TP and seal from a 13xx gun.It measures .140", slightly larger than the barrel port.Have you tested the gun since you pinned the valve?