Author Topic: 1377 grip shims  (Read 7847 times)

Offline Toolmaker

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1377 grip shims
« on: November 25, 2009, 11:05:00 AM »
I got tired of the grips on my 1377 shifting around no matter how tight the screws are. I want a nice set of custom grips but that's just not in the budget right now. I made up these simple delrin shims and they tightened up things nicely. I don't understand why Crosman doesn't make the hole the correct size to begin with. The shims are .125 ID and .187 OD. I pushed them in the grip and trimmed to length with a razor blade.
Matt N.
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Benjamin 397PA (build date Nov. 09)  
Benjamin HB22 (build date Aug. 99)
Crosman 1377 (second variant build date Oct. 86)
Crosman 760c (build date Aug. 89)
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Offline gamo2hammerli

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Re: 1377 grip shims
« Reply #1 on: December 11, 2009, 08:18:22 AM »
My plastic grips wiggle abit too....but since I`m practically hopeless with tools and tinkering....I`ll let it be.  Great job with the shims.
Gamo: Expotec .177 + Big Cat .177 + Viper .177 + Whisper .177, Hammerli Titan .177, Diana model 24 .177, RWS-Diana P5 Magnum pistol .177, Crosman: G1 Extreme .177 + Storm XT .177 + Sierra Pro .177 + 1377 pistol .177, Air Arms S410SL .22, BSA Scorpion T10 .22, FX Cyclone .177, Remington Air Master 77 .177 + BB\'s,

Offline Brutuz

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Re: 1377 grip shims
« Reply #2 on: December 11, 2009, 09:16:21 AM »


Quote
gamo2hammerli - 12/11/2009  10:18 PM  My plastic grips wiggle abit too....but since I`m practically hopeless with tools and tinkering....I`ll let it be.  Great job with the shims.



Smoothing the casting edges with sanding paper improves it a lot. You can actualy see them on the pic above.



My green 1377 "Bayou" grips:










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Offline jake

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RE: 1377 grip shims
« Reply #3 on: December 11, 2009, 10:34:40 AM »
good idea!
if at first you dont succeed, re-load, kill count 2010.
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Offline 1377x

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RE: 1377 grip shims
« Reply #4 on: December 11, 2009, 04:58:33 PM »
another use for left over tubing
was this used to your transfer seal?

Offline Toolmaker

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RE: 1377 grip shims
« Reply #5 on: December 11, 2009, 11:50:41 PM »
Nope, this wasn't tubing. It started out as a solid piece of delrin that I turned & drilled to the correct size.
Matt N.
Pneumatic addict  
Benjamin 397PA (build date Nov. 09)  
Benjamin HB22 (build date Aug. 99)
Crosman 1377 (second variant build date Oct. 86)
Crosman 760c (build date Aug. 89)
Daisy Powerline 922 (Built in the 80\'s)
QB-78D .177  
Tech Force 6 (how did that get here?)

Offline 1377x

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Re: 1377 grip shims
« Reply #6 on: December 12, 2009, 01:53:01 AM »
i dont know what delrin is (ill google it later),,would delrin make a good transfer port seal

Offline Toolmaker

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Re: 1377 grip shims
« Reply #7 on: December 12, 2009, 08:40:06 AM »
Yes, delrin would work for a transfer port seal, but it has to be machined to the correct size. It is much easier to use poly tubing, it can be cut to length with a razor blade. Here are some ideas: http://www.network54.com/Realm/CFTech/Bioportupdate.htm
Matt N.
Pneumatic addict  
Benjamin 397PA (build date Nov. 09)  
Benjamin HB22 (build date Aug. 99)
Crosman 1377 (second variant build date Oct. 86)
Crosman 760c (build date Aug. 89)
Daisy Powerline 922 (Built in the 80\'s)
QB-78D .177  
Tech Force 6 (how did that get here?)

Offline gamo2hammerli

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Re: 1377 grip shims
« Reply #8 on: December 17, 2009, 08:35:18 AM »
Kudos to Toolmaker....he was going to send some free grip bolt hole shims to me.  I had to decline since it`s probably going to cost him more in postage than the parts....plus I had planned to try to use the plastic ink tube (From a pen) to see if that works.  Many thanks to Toolmaker anyways.
Gamo: Expotec .177 + Big Cat .177 + Viper .177 + Whisper .177, Hammerli Titan .177, Diana model 24 .177, RWS-Diana P5 Magnum pistol .177, Crosman: G1 Extreme .177 + Storm XT .177 + Sierra Pro .177 + 1377 pistol .177, Air Arms S410SL .22, BSA Scorpion T10 .22, FX Cyclone .177, Remington Air Master 77 .177 + BB\'s,

Offline Rontier

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Re: 1377 grip shims
« Reply #9 on: December 19, 2009, 05:31:08 AM »
I'm just Lookin, & Thanks to Toolman for the good info,
looking at redoing my 1377 ,have put a stock on ,& got an 24" Barrel so far.
I was going to heat the stock too change the angle on it ,more for a scope mount with high rings.

Offline Big_Bill

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RE: 1377 grip shims
« Reply #10 on: December 19, 2009, 08:22:20 AM »


I have been following this post since it began, as I have 2 -1377's and a 2300.



It would be great if a washer or different size tubing would fit, to true up the alignment pins !



I'll be checking to see if there is an easy fix that we all can use.



I never thought of this before though, and just tightened the screws ! My Bad !!!!



Thanks Matt ! GREAT POST !!!!!



Bill

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