Crosman 1400 Restoration

Jump to

Author Topic: Crosman 1400 Restoration  (Read 4491 times)

Online rsterne

  • GTA Moderator
  • Old Timers
  • *****
  • Posts: 8160
  • Mozey-On-Inn and see what Coalmont has to offer
    • Mozey-On-Inn
Crosman 1400 Restoration
« on: February 06, 2012, 09:49:51 PM »
About a year ago I bought this 1400 as a project (like I didn't have enough already).... I'm a sucker for the wood on these early Crosmans, you never know what's hiding under there.... I've already rebuilt a few 140s, so I'm familiar with what they need and like.... When I bought this gun the Ad said "nice brown patina" and I should have known what that meant....







Actually the rust wasn't that bad, mostly in front of the stock where people have a tendency to pick up the gun when it's propped in a corner.... The wood is covered by Crosman's brown finish of the time but the grain underneath looks nice.... It wouldn't hold air for long and shot weakly (under 500 fps) so I pulled it apart just to diagnose it and found the quad seal leaking and replaced it.... That gave me a gun that would hold air and shoot typical of a gun of that age....320 fps at 2 pumps, 440 at 4, 510 at 6, 550 at 8, and 580 at 10 pumps.... The trigger pull was attrocious, but at least the metal trigger group on the 1400 is adjustable for pull weight where the 140 (which has the trigger mounted directly in the wood stock) was not.... I stripped the gun completely apart to start the rebuild.... Here are the parts of interest....



Starting from the top, looking at the items circled in yellow....

The cutout in the pump tube is too far forward and if you don't pump the gun VERY slowly it doesn't take in air properly as the air has to draw into the pump along the raised channel.... This is a common problem where the velocity is low unless you wait a couple seconds at the end of each "out" stroke.... The solution is to lengthen the slot and deburr it carefully....

The pump cup is difficult to replace, and this one is quite hard.... My solution is to replace the end half of the piston with a new flat topped one grooved for an O-ring.... Easily replaceable, commonly available, and you can achieve higher pressures....

The rear of the valve only has a 1/8" hole in it.... I drill it out in stages to 5/32" to match the rest of the ports in the gun....

There is an aluminum spacer in the valve which takes up about half the volume.... This means that the pressure rises very quickly, but you will notice that you get most of the performance in the first 6 pumps.... With the "dump" style valve held closed directly by the sear, the higher the pressure the harder the trigger pull.... I will be replacing the short spring and spacer with the longer one underneath them.... The additional volume will allow more velocity at higher pump numbers with reduced trigger pull weight....

The hole in the flow-through bolt is only 0.140".... I drill it out to 5/32" to match the other ports....

The stock retaining screw in this gun wasn't all mangled by pliers, so it may never have been apart.... They are usually shredded by master craftsmen, however, so I mill two flats in the larger portion to allow the use of a wrench to remove and install....

Other than these items, everything will get a thorough cleaning, rust removal, and rebluing and then I get to tackle the stock....

Bob
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
Airsonal:
.177 Diana 34, 1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine (Grouse Gun), 2260 PCP Rifle (37 FPE), 2560 PCP Rifle (52 FPE), .22 BAM B-26, .22 BAM B-51, Hatsan AT-4410 Long (70 FPE),
"Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, .308 & .357 unregulated; working on the Mk.III, a .410 shotgun, and .458 cal)

Offline Crosshairs

  • Old Timers
  • *****
  • Posts: 1480
Re: Crosman 1400 Restoration
« Reply #1 on: February 07, 2012, 06:43:10 AM »
Nice gun can't wait to see it complete. How hard does it shoot ?
                                           Mike
Of all the things i lost i miss my mind the most.


CCS 2400KT 14" Barrel .22 Cal
CCS 2300KT 10.1" LW Barrel .177Cal
CCS 2400KT 14" Barrel .177 Cal
Crosman 600 X2
Crosman MKI 1st
Crosman MKI 2nd
Crosman MKII
Benjamin 397,38T,38C
Crosman 2200 Magnum  .22 Cal
Crosman 2100 Classic     .177 Cal
Benjamin EB22 EB17 E20
1377 All Variants
Crosman 400 .22 Cal
Crosman 760 First Variant And Limited 760s
Crosman SA Six ,SA Hahn 45 ,SA Hahn 36  
Crosman C11,C11T, C21,C31,C41,T4,357,
Benjamin M-rod ,P-Rod

Offline badredbird

  • Old Timers
  • *****
  • Posts: 1041
  • yes
  • Real Name: john
Re: Crosman 1400 Restoration
« Reply #2 on: February 07, 2012, 11:26:27 AM »
i thought about picking one of those 1400s up, i already own a bunch of old benji s 312s 342 , matter of fact just picked  up a 342 gun is in nice shape but needs seal , how do the 1400s compare in accuracy to the benjis?
  • leon wv
909 tuned  dragon claw tuned  357 recluse tuned  steroid 392   stock 392p   steroid 342   stock 342  1958 20 cal blue streak 1973 20 cal blue streak  22 cal disco   25 cal maurader   25 cal sumatra  25 cal sumatra carbine   stock polished brass 342  extreme bigbore hunter 457

Online rsterne

  • GTA Moderator
  • Old Timers
  • *****
  • Posts: 8160
  • Mozey-On-Inn and see what Coalmont has to offer
    • Mozey-On-Inn
Re: Crosman 1400 Restoration
« Reply #3 on: February 08, 2012, 07:13:27 PM »
Over the past couple of days I have been working on the modifications I wanted to do and rebluing all the metalwork.... Every single piece was cleaned, degreased (twice) and reblued with Van's Gun Blue.... There were a lot of small pieces....



In addition I reblued the barrel, main tube, and pump linkage.... In the photo above you can see the new piston with O-ring (top right), and just below it the stock mounting bolt with the flats milled in it (hard to see).... Once everything was finished and oiled lightly I reassembled the gun and ran a few pellets through it....



If you compare the photo above to the first one in this thread, you can see the improvement.... I was quite pleased with the increase in performance as well.... 2 pumps gave 305 fps, 4 gave 442, 6 was 534, 8 was 588, and 10 pumps was 620 fps.... The gun now shoots harder at 8 pumps than it did originally at 10 pumps.... and the trigger pull is much lighter as well.... I'm quite pleased with the results.... Now to get on with refinishing the stock....

Bob
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
Airsonal:
.177 Diana 34, 1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine (Grouse Gun), 2260 PCP Rifle (37 FPE), 2560 PCP Rifle (52 FPE), .22 BAM B-26, .22 BAM B-51, Hatsan AT-4410 Long (70 FPE),
"Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, .308 & .357 unregulated; working on the Mk.III, a .410 shotgun, and .458 cal)

Online rsterne

  • GTA Moderator
  • Old Timers
  • *****
  • Posts: 8160
  • Mozey-On-Inn and see what Coalmont has to offer
    • Mozey-On-Inn
Re: Crosman 1400 Restoration
« Reply #4 on: February 09, 2012, 12:44:17 AM »
I got the old brown finish stripped off the stock today.... Pretty nice grain hiding under there....



Staining and sanding tomorrow, hopefully....

Bob
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
Airsonal:
.177 Diana 34, 1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine (Grouse Gun), 2260 PCP Rifle (37 FPE), 2560 PCP Rifle (52 FPE), .22 BAM B-26, .22 BAM B-51, Hatsan AT-4410 Long (70 FPE),
"Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, .308 & .357 unregulated; working on the Mk.III, a .410 shotgun, and .458 cal)

Online rsterne

  • GTA Moderator
  • Old Timers
  • *****
  • Posts: 8160
  • Mozey-On-Inn and see what Coalmont has to offer
    • Mozey-On-Inn
Re: Crosman 1400 Restoration
« Reply #5 on: February 11, 2012, 05:55:04 PM »
Here is a photo with the Dark Walnut stain done....



If anything, the contrast will increase with the Watco Oil Finish when I rub it out....

Bob
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
Airsonal:
.177 Diana 34, 1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine (Grouse Gun), 2260 PCP Rifle (37 FPE), 2560 PCP Rifle (52 FPE), .22 BAM B-26, .22 BAM B-51, Hatsan AT-4410 Long (70 FPE),
"Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, .308 & .357 unregulated; working on the Mk.III, a .410 shotgun, and .458 cal)

Offline Crosshairs

  • Old Timers
  • *****
  • Posts: 1480
Re: Crosman 1400 Restoration
« Reply #6 on: February 11, 2012, 07:41:14 PM »
That stock looks great very nice job.
                                       Mike
Of all the things i lost i miss my mind the most.


CCS 2400KT 14" Barrel .22 Cal
CCS 2300KT 10.1" LW Barrel .177Cal
CCS 2400KT 14" Barrel .177 Cal
Crosman 600 X2
Crosman MKI 1st
Crosman MKI 2nd
Crosman MKII
Benjamin 397,38T,38C
Crosman 2200 Magnum  .22 Cal
Crosman 2100 Classic     .177 Cal
Benjamin EB22 EB17 E20
1377 All Variants
Crosman 400 .22 Cal
Crosman 760 First Variant And Limited 760s
Crosman SA Six ,SA Hahn 45 ,SA Hahn 36  
Crosman C11,C11T, C21,C31,C41,T4,357,
Benjamin M-rod ,P-Rod

Offline badredbird

  • Old Timers
  • *****
  • Posts: 1041
  • yes
  • Real Name: john
Re: Crosman 1400 Restoration
« Reply #7 on: February 12, 2012, 05:13:13 PM »
looks swet, picked up a blue streak myself today at a yard sale , found it its what they call a flat top from the 50s , definitley will restore it , its not in bad shape  good luck with restoration
  • leon wv
909 tuned  dragon claw tuned  357 recluse tuned  steroid 392   stock 392p   steroid 342   stock 342  1958 20 cal blue streak 1973 20 cal blue streak  22 cal disco   25 cal maurader   25 cal sumatra  25 cal sumatra carbine   stock polished brass 342  extreme bigbore hunter 457

Online rsterne

  • GTA Moderator
  • Old Timers
  • *****
  • Posts: 8160
  • Mozey-On-Inn and see what Coalmont has to offer
    • Mozey-On-Inn
Re: Crosman 1400 Restoration
« Reply #8 on: February 19, 2012, 04:08:55 PM »
The restoration of this Crosman 1400 is completed.... The stock received seven coats of Watco Dark Walnut Danish Oil, each coat wet sanded ending with 600 grit.... It was then waxed with Dark MinWax, three coats.... which resulted in an incredibly smooth finish with a medium gloss.... Here is the results....





In addition to the rebluing, detailed above, the ports have all been brought up to at least 5/32" and the resulting velocities are 515 at 5 pumps, 610 at 8 pumps, and 660 at 10 pumps.... The trigger pull is much lighter than it was to start with, although it is very long.... I'm extremely pleased with the way it turned out.... especially when you see what I started with in the first post....   ;D

Bob
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
Airsonal:
.177 Diana 34, 1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine (Grouse Gun), 2260 PCP Rifle (37 FPE), 2560 PCP Rifle (52 FPE), .22 BAM B-26, .22 BAM B-51, Hatsan AT-4410 Long (70 FPE),
"Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, .308 & .357 unregulated; working on the Mk.III, a .410 shotgun, and .458 cal)

Offline badredbird

  • Old Timers
  • *****
  • Posts: 1041
  • yes
  • Real Name: john
Re: Crosman 1400 Restoration
« Reply #9 on: February 19, 2012, 08:09:49 PM »
very very nice , refinishing a stock on a benji 342 , was going to use true oil , but may do what you did   thx
  • leon wv
909 tuned  dragon claw tuned  357 recluse tuned  steroid 392   stock 392p   steroid 342   stock 342  1958 20 cal blue streak 1973 20 cal blue streak  22 cal disco   25 cal maurader   25 cal sumatra  25 cal sumatra carbine   stock polished brass 342  extreme bigbore hunter 457

Offline Nate the airgunner

  • Nathan
  • Old Timers
  • *****
  • Posts: 922
  • Real Name: Nathan
Re: Crosman 1400 Restoration
« Reply #10 on: February 20, 2012, 10:47:35 PM »
Looks like a very nice rifle. Have fun with her.
  • Villa Ridge Missouri
Nationally competitive Expert shooter in JROTC

Benjamin 392
Benjamin 397
Crosman 1377
Crosman Storm XT
Crosman 2240
Benjamin Trail NP XL 1100 (home tuned)
Crosman Challenger (JROTC rifle)

Wish list:
Beeman R9 .20
Crosman M4-177

Offline Petey

  • Old Timers
  • *****
  • Posts: 1635
  • Real Name: Pete
Re: Crosman 1400 Restoration
« Reply #11 on: March 02, 2012, 09:35:44 PM »
SA-WEET!
I would love to own that!
  • Morgan Hill, CA.
RWS 48 T05 .177  Macarri Soft Kit

Beeman    R7                     .177
Wiehrauch HW30S Deluxe   .177 
Wiehrauch HW50S              .177

Crosman 102  1927-29

AM77-Centerpoint 3x9x40
1953-54 Daisy Defender

Offline mav72

  • Old Timers
  • *****
  • Posts: 724
Re: Crosman 1400 Restoration
« Reply #12 on: March 03, 2012, 03:45:29 AM »
Very nice! I also have the want to redo a 1400 also....
mav

Offline Petey

  • Old Timers
  • *****
  • Posts: 1635
  • Real Name: Pete
Re: Crosman 1400 Restoration
« Reply #13 on: March 09, 2012, 08:50:03 PM »
SA-WEET!
I would love to own that!

Thank you Bob!
  • Morgan Hill, CA.
RWS 48 T05 .177  Macarri Soft Kit

Beeman    R7                     .177
Wiehrauch HW30S Deluxe   .177 
Wiehrauch HW50S              .177

Crosman 102  1927-29

AM77-Centerpoint 3x9x40
1953-54 Daisy Defender

Online rsterne

  • GTA Moderator
  • Old Timers
  • *****
  • Posts: 8160
  • Mozey-On-Inn and see what Coalmont has to offer
    • Mozey-On-Inn
Re: Crosman 1400 Restoration
« Reply #14 on: March 09, 2012, 10:10:35 PM »
I hope you enjoy it !!!

Bob
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
Airsonal:
.177 Diana 34, 1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine (Grouse Gun), 2260 PCP Rifle (37 FPE), 2560 PCP Rifle (52 FPE), .22 BAM B-26, .22 BAM B-51, Hatsan AT-4410 Long (70 FPE),
"Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, .308 & .357 unregulated; working on the Mk.III, a .410 shotgun, and .458 cal)

Offline Petey

  • Old Timers
  • *****
  • Posts: 1635
  • Real Name: Pete
Re: Crosman 1400 Restoration
« Reply #15 on: March 11, 2012, 08:35:06 PM »
 ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D !
  • Morgan Hill, CA.
RWS 48 T05 .177  Macarri Soft Kit

Beeman    R7                     .177
Wiehrauch HW30S Deluxe   .177 
Wiehrauch HW50S              .177

Crosman 102  1927-29

AM77-Centerpoint 3x9x40
1953-54 Daisy Defender

Offline breakfastchef

  • Old Timers
  • *****
  • Posts: 1072
  • Real Name: Larry
Re: Crosman 1400 Restoration
« Reply #16 on: March 12, 2012, 10:47:54 PM »
rsterne - your attention to detail is most noticeable. The rifle is sure to be an heirloom. Take good care of it!
  • Western NC

Offline Petey

  • Old Timers
  • *****
  • Posts: 1635
  • Real Name: Pete
Re: Crosman 1400 Restoration
« Reply #17 on: March 14, 2012, 12:07:33 AM »
 
rsterne - your attention to detail is most noticeable. The rifle is sure to be an heirloom. Take good care of it!

I will!  :D
  • Morgan Hill, CA.
RWS 48 T05 .177  Macarri Soft Kit

Beeman    R7                     .177
Wiehrauch HW30S Deluxe   .177 
Wiehrauch HW50S              .177

Crosman 102  1927-29

AM77-Centerpoint 3x9x40
1953-54 Daisy Defender

How do you word it... "Air Guns" or "AirGuns"?