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Author Topic: Crosman 1377 Pump Linkage Durability  (Read 331 times))

Offline Kels73

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Crosman 1377 Pump Linkage Durability
« on: April 25, 2021, 01:55:52 PM »
I recently purchased a Crosman 1377, and I've decided to modify it. I've read a lot of great posts about flat top pistons and valves, so I ordered both from MellonAir. I also ordered his solid pin and bushing upgrade to replace the roll pin in the pump arm. 

The flat top piston and valve appeal to me because of the improved efficiency and power they provide. However, I've read a few posts which suggest that power mods increase wear and tear of the pump linkage. I only intend to pump the gun 3-5 times for most shots. I'll pump it 10 times for pest elimination, maybe 12 at most.

Will my modification and manner of shooting significantly increase wear and tear of the pump linkage? If so, will the solid pin and bushing upgrade provide the needed additional strength?

Thanks in advance.

   
  • USA, California, Fairfield
Benjamin Marauder Pistol .22
Benjamin Marauder Rifle .177, reg & L-W barrel
Benjamin Kratos Rifle .22
Crosman 2240xl .22
Crosman 1377 .177
Weihrauch HW50s Rifle .177

Offline Madd Hatter

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Re: Crosman 1377 Pump Linkage Durability
« Reply #1 on: April 25, 2021, 03:05:57 PM »
Following.
  • Juniper woods ranch   AZ
Be like the weather. It don't care what anybody thinks.

10 shots Aspen 25 yards

Offline DRose

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Re: Crosman 1377 Pump Linkage Durability
« Reply #2 on: April 25, 2021, 08:17:24 PM »
My experience has been that if the pivot is lubricated, moist, it will last a decade+ at 5 pumps. The real wear and tear comes with crazy high pressure produced at 12 or more pumps over and over.
  • Crown City, Ohio

Offline Kels73

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Re: Crosman 1377 Pump Linkage Durability
« Reply #3 on: April 25, 2021, 09:23:41 PM »
My experience has been that if the pivot is lubricated, moist, it will last a decade+ at 5 pumps. The real wear and tear comes with crazy high pressure produced at 12 or more pumps over and over.

Good to know. Thanks.
  • USA, California, Fairfield
Benjamin Marauder Pistol .22
Benjamin Marauder Rifle .177, reg & L-W barrel
Benjamin Kratos Rifle .22
Crosman 2240xl .22
Crosman 1377 .177
Weihrauch HW50s Rifle .177

Offline OTmachine

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Re: Crosman 1377 Pump Linkage Durability
« Reply #4 on: May 02, 2021, 09:06:14 PM »
Is there a listing of 1377’s years and parts the can be upgraded on different ones?  I was given one with the plastic breech and would like to make it “Better”.
TIA,
Keith
  • USA, Central WI