Crosman 1400 reseal
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Crosman 1400 reseal
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Topic: Crosman 1400 reseal (Read 855 times))
Tack Driver 10
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Posts: 1499
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Real Name: Ron
Crosman 1400 reseal
«
on:
December 12, 2018, 02:52:33 PM »
Picked up a 1400 off Ebay for a decent price.
Missing sights and has a crack in the stock on RH side.
The gun is in good shape otherwise in need of a reseal.
Want to keep this close to stock so just some minor mods:
Opened the exhaust port on the valve from .125" to .150".
Counter bored the barrel .100" deep to accept .150" Delrin transfer port.
Flat top 70 duro poly O-ring piston and valve.
Need to make a pivot pin to replace the temp brass pin.
Should get to chrony it soon.
«
Last Edit: December 15, 2018, 09:59:22 AM by Tack Driver 10
»
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Oklahoma
Wayne52
GTA Senior Contributor
Posts: 31841
Gone but not forgotten!!!
Real Name: Wayne
Re: Crosman 1400 reseal
«
Reply #1 on:
December 12, 2018, 02:58:38 PM »
Nice ole Crosman !!!
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USA, MI, Grand Rapids
HHDSUPCOM Cam Rahn Bay VN 71-72
My F10 Shoebox rocks
cobalt327
GTA Senior Contributor
Posts: 2418
Real Name: Mark
Re: Crosman 1400 reseal
«
Reply #2 on:
December 12, 2018, 03:20:26 PM »
That's a killer piston there. Very nice work.
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GA, USA
Tack Driver 10
Expert
Posts: 1499
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Real Name: Ron
Re: Crosman 1400 reseal
«
Reply #3 on:
December 12, 2018, 08:08:18 PM »
Quote from: cobalt327 on December 12, 2018, 03:20:26 PM
That's a killer piston there. Very nice work.
Thanks, the brass FT piston head is screwed on with 5/16"x24 threads and machined true.
The holes drilled in the nut and piston are for adjusting the piston in the gun.
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Oklahoma
Tack Driver 10
Expert
Posts: 1499
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Real Name: Ron
Re: Crosman 1400 reseal
«
Reply #4 on:
December 14, 2018, 12:00:49 PM »
Ran the gun over the chrony:
14.3 grain CPHPs
05 pumps=563 FPS 10.06 FPE
07 pumps=625 FPS 12.40 FPE
10 pumps=712 FPS 16.09 FPE
Decent power considering the 70 duro o-rings.
I'll run it again after the replacement pivot bolt gets installed.
The 3/16" temp brass pin bends robbing power.
«
Last Edit: December 14, 2018, 01:07:38 PM by Tack Driver 10
»
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Oklahoma
BrushPopper
Marksman
Posts: 424
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Real Name: Anthony
Re: Crosman 1400 reseal
«
Reply #5 on:
December 14, 2018, 12:59:42 PM »
Those are good numbers. Those 1400s can really crack
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Bertram Texas
“Innovation is seeing what everyone else has seen, and thinking what no one else has thought”
19Sheridan57
GTA Senior Contributor
Posts: 3392
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Real Name: Steve
Re: Crosman 1400 reseal
«
Reply #6 on:
December 15, 2018, 08:18:54 AM »
Sweet shooting little rifles, too !
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Florida
avator
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GTA Senior Contributor
Posts: 50193
The best "Bad Dog" I ever had.
Real Name: Bill
Re: Crosman 1400 reseal
«
Reply #7 on:
December 15, 2018, 08:26:06 AM »
Yep... the 1400 had a bit more umph over the 140. I like the bolt better than the collars as well. The wood is a bit hard to refinish. I tends to get "blotchy" if not done right.
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From deep within the Rabbit Hole, Alabama
Charter Member Of The Secret Squirrel Society 20FEB202
Tack Driver 10
Expert
Posts: 1499
yes
Real Name: Ron
Re: Crosman 1400 reseal
«
Reply #8 on:
December 15, 2018, 10:03:43 AM »
Made the pivot pin from a 10-32 black oxide shank bolt.
Contoured the tube side of the brass washers so they sit tight against the tube.
The LH side is threaded so the pivot pin can't spin.
«
Last Edit: December 15, 2018, 10:17:01 AM by Tack Driver 10
»
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Oklahoma
cobalt327
GTA Senior Contributor
Posts: 2418
Real Name: Mark
Re: Crosman 1400 reseal
«
Reply #9 on:
December 15, 2018, 02:32:16 PM »
Excellent results.
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GA, USA
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Crosman 1400 reseal