One Shot Slip On LDC For Benjamin 392 ?



Author Topic: One Shot Slip On LDC For Benjamin 392 ?  (Read 435 times))

Offline wll2506

  • Expert
  • *****
  • Posts: 1620
  • yes
  • Real Name: William
One Shot Slip On LDC For Benjamin 392 ?
« on: February 14, 2019, 05:50:12 AM »
Has anyone made a slip on LDC for their Benjamin 392 ?

I know there is not the room to have one permanently installed because of the cocking arm underneath, although maybe a slotted tube would work ?

After pumping a nice quiet shot could be of benefit especially if you pump and then your shot is away from your pumping location ... not spooking your game on that first shot could be important ?

I have seen a adapter, but it is very short and could cause barrel separation IMO. I think a quick slip on and off unit would probably fit my wants. When I get the gun I'll put what is left of my gray matter to work and see what I can come up with ;- )

Just thinking out loud.

wll
« Last Edit: February 14, 2019, 06:01:18 AM by wll2506 »
  • Lancaster, Ca.

Offline only1harry

  • One of the original 3 GTA Musketeers (per Gene Curtis)
  • GTA Moderator
  • GTA Senior Contributor
  • *****
  • Posts: 18409
  • ΜΟΛΩΝ ΛΑΒΕ! (come and get them)
  • Real Name: Harry
Re: One Shot Slip On LDC For Benjamin 392 ?
« Reply #1 on: February 14, 2019, 07:08:16 PM »
Rocker can probably make 1 for you. 

Moved to the Crosman gate.

Harry
  • Hudson Valley, NY
Pro-tuned guns:

AF Condor .25 #1,  Condor .25 #2
Condor .22,  Marauder .25,  Disco .22 camo
RWS Diana 350 .22,  RWS Diana 48 .22,
RWS 34K .20 Premium #17 of 30 custom built by Diana
RWS Diana 36 .177  (Gene & Bob tuned)

Factory stock & home tuned:

Gauntlet .22,  Disco .22
RWS 350 .177,  RWS 5G .177
Hammerli 850 .22,  Umarex M&P45
Remington NPSS .22,  Crosman 2240
Crosman 66,  Crosman 760
Crosman Air17,  Crosman 38T

Offline Geo Schoonmaker

  • Plinker
  • **
  • Posts: 294
    • My Airgun Blog
  • Real Name: Geo
Re: One Shot Slip On LDC For Benjamin 392 ?
« Reply #2 on: February 14, 2019, 10:34:53 PM »
If someone can post a picture of one with the pump handle fully extended and provide me with the outer diameters of the barrel and pump tube, I can make one. I've already done a very similar build for stock barrel length 13XX, so I could probably make this a reality in a month or two.
  • Rolla, Missouri

Offline wll2506

  • Expert
  • *****
  • Posts: 1620
  • yes
  • Real Name: William
Re: One Shot Slip On LDC For Benjamin 392 ?
« Reply #3 on: February 14, 2019, 10:51:20 PM »
If someone can post a picture of one with the pump handle fully extended and provide me with the outer diameters of the barrel and pump tube, I can make one. I've already done a very similar build for stock barrel length 13XX, so I could probably make this a reality in a month or two.

If anyone can do it, it would be you. I'm sure it would look awesome too.

When I get my gun I will send pics and dimensions ;-  )

wll
  • Lancaster, Ca.

Offline superchikn

  • Sharp Shooter
  • ****
  • Posts: 601
  • yes
  • Real Name: Ray
Re: One Shot Slip On LDC For Benjamin 392 ?
« Reply #4 on: February 14, 2019, 11:44:58 PM »
If someone can post a picture of one with the pump handle fully extended and provide me with the outer diameters of the barrel and pump tube, I can make one. I've already done a very similar build for stock barrel length 13XX, so I could probably make this a reality in a month or two.
I was just going to suggest contacting you.  I was just shooting my 1322.  Really amazed at how quiet your LDC made it.   ;D ;D ;D
For those of you with 13xx pumpers with stock length barrels, Geo's LDC is awesome!!!
  • Schwenksville, Pa.
Diana 34P .177 Hammers 4-12 x 40 AO self tuned, ARH kit.
Nova Liberty .22 wood 6-24 x 50 31 fpe baffles by GEO
Crosman SSP-250 .177 , red dot reflex, Rocker 1 LDC
FD XS-60C .22 Mike Mellick power tune, 6-24x50, Rocker 1 LDC
Diana model 23 .177
Umarex Fusion .177 3-9 x 40 AO
Bavaria model 45 .177- needs a lot of love.
Beeman P17  red dot reflex
Crosman 1322 CP 2x20 GEO LDC
Daisy 880 4x30
Umarex Octane Elite .22 UTG 4-16x50
Benjamin Trail NP pistol .177 CP 2x20
...

Offline Xptical

  • Plinker
  • **
  • Posts: 123
  • yes
Re: One Shot Slip On LDC For Benjamin 392 ?
« Reply #5 on: February 15, 2019, 09:47:37 AM »
If someone can post a picture of one with the pump handle fully extended and provide me with the outer diameters of the barrel and pump tube, I can make one. I've already done a very similar build for stock barrel length 13XX, so I could probably make this a reality in a month or two.

Barrel...8.95mm. Sights are 9.5mm set back.

Tube...22.45mm.  6.3mm setback gets into the pumparm.
  • GA, USA
Beeman QB-78S  .177  w/Barska 3-9x32 30/30 Reticle

(dead) Benjamin Prowler  .22  w/Barska 3-9x32 Plinker

Daisy 880s w/Barska 3-9x32 Plinker

(dead-returned) Gamo Hornet Maxxim .22 w/Gamo scope

Benjamin 392 .22 w/Barska 3-9x32

Daisy Red Ryder

Beeman P-17

Offline Geo Schoonmaker

  • Plinker
  • **
  • Posts: 294
    • My Airgun Blog
  • Real Name: Geo
Re: One Shot Slip On LDC For Benjamin 392 ?
« Reply #6 on: February 15, 2019, 10:56:13 AM »
If someone can post a picture of one with the pump handle fully extended and provide me with the outer diameters of the barrel and pump tube, I can make one. I've already done a very similar build for stock barrel length 13XX, so I could probably make this a reality in a month or two.

Barrel...8.95mm. Sights are 9.5mm set back.

Tube...22.45mm.  6.3mm setback gets into the pumparm.

Thanks! That gives me something good to work with. From looking at pictures, there appears to be 2 roll pins near the end of the pump tube. Do both protrude from the tube like the one in the 13XX does?
  • Rolla, Missouri

Offline Xptical

  • Plinker
  • **
  • Posts: 123
  • yes
Re: One Shot Slip On LDC For Benjamin 392 ?
« Reply #7 on: February 15, 2019, 11:16:01 AM »
If someone can post a picture of one with the pump handle fully extended and provide me with the outer diameters of the barrel and pump tube, I can make one. I've already done a very similar build for stock barrel length 13XX, so I could probably make this a reality in a month or two.

Barrel...8.95mm. Sights are 9.5mm set back.

Tube...22.45mm.  6.3mm setback gets into the pumparm.

Thanks! That gives me something good to work with. From looking at pictures, there appears to be 2 roll pins near the end of the pump tube. Do both protrude from the tube like the one in the 13XX does?

4.6mm rollpin is centered at 8.7mm back and 8.3mm down.

4.6mm rollpin is centered 21mm back and 16mm down.

Honestly, there isn't much meat to work with.

Maybe something slit at top for the front sight and slit on bottom for the pump arm.
  • GA, USA
Beeman QB-78S  .177  w/Barska 3-9x32 30/30 Reticle

(dead) Benjamin Prowler  .22  w/Barska 3-9x32 Plinker

Daisy 880s w/Barska 3-9x32 Plinker

(dead-returned) Gamo Hornet Maxxim .22 w/Gamo scope

Benjamin 392 .22 w/Barska 3-9x32

Daisy Red Ryder

Beeman P-17

Offline Geo Schoonmaker

  • Plinker
  • **
  • Posts: 294
    • My Airgun Blog
  • Real Name: Geo
Re: One Shot Slip On LDC For Benjamin 392 ?
« Reply #8 on: February 15, 2019, 11:39:47 AM »
If someone can post a picture of one with the pump handle fully extended and provide me with the outer diameters of the barrel and pump tube, I can make one. I've already done a very similar build for stock barrel length 13XX, so I could probably make this a reality in a month or two.

Barrel...8.95mm. Sights are 9.5mm set back.

Tube...22.45mm.  6.3mm setback gets into the pumparm.

Thanks! That gives me something good to work with. From looking at pictures, there appears to be 2 roll pins near the end of the pump tube. Do both protrude from the tube like the one in the 13XX does?

4.6mm rollpin is centered at 8.7mm back and 8.3mm down.

4.6mm rollpin is centered 21mm back and 16mm down.

Honestly, there isn't much meat to work with.

Maybe something slit at top for the front sight and slit on bottom for the pump arm.

You are right, not much meat to work with, but with those measurements, there's gonna be enough! I work a mindless job 3 days a week, so I spend my shifts working out the details on projects like these while I perform my boring tasks. Many thanks for the measurements, there's just two more that I need - how tall is the solder joint between the barrel and pump tube and the width of the front sight?

The design I have forming in my mind will allow the use of the front sight and should require no mods to the rifle itself. Since the rifle is fairly substantial, I will have to combine 3d printing with a carbon fiber tube or anodized aluminum body for best results.
  • Rolla, Missouri

Offline Xptical

  • Plinker
  • **
  • Posts: 123
  • yes
Re: One Shot Slip On LDC For Benjamin 392 ?
« Reply #9 on: February 15, 2019, 01:46:57 PM »
If someone can post a picture of one with the pump handle fully extended and provide me with the outer diameters of the barrel and pump tube, I can make one. I've already done a very similar build for stock barrel length 13XX, so I could probably make this a reality in a month or two.

Barrel...8.95mm. Sights are 9.5mm set back.

Tube...22.45mm.  6.3mm setback gets into the pumparm.

Thanks! That gives me something good to work with. From looking at pictures, there appears to be 2 roll pins near the end of the pump tube. Do both protrude from the tube like the one in the 13XX does?

4.6mm rollpin is centered at 8.7mm back and 8.3mm down.

4.6mm rollpin is centered 21mm back and 16mm down.

Honestly, there isn't much meat to work with.

Maybe something slit at top for the front sight and slit on bottom for the pump arm.

You are right, not much meat to work with, but with those measurements, there's gonna be enough! I work a mindless job 3 days a week, so I spend my shifts working out the details on projects like these while I perform my boring tasks. Many thanks for the measurements, there's just two more that I need - how tall is the solder joint between the barrel and pump tube and the width of the front sight?

The design I have forming in my mind will allow the use of the front sight and should require no mods to the rifle itself. Since the rifle is fairly substantial, I will have to combine 3d printing with a carbon fiber tube or anodized aluminum body for best results.

AFAICT, the solder joint is negligible.  Total height barrel + pump tube is 31.3mm.

Front sight starts at 9.5mm back from the muzzle and it is 16.4mm long.  It is 11.55mm wide and kinda double-fillets upward to 2mm at the tip.  Height above the barrel is 11mm.

Maybe I can do a FreeCAD model of the business end.

Oh, have someone else double check my numbers.
  • GA, USA
Beeman QB-78S  .177  w/Barska 3-9x32 30/30 Reticle

(dead) Benjamin Prowler  .22  w/Barska 3-9x32 Plinker

Daisy 880s w/Barska 3-9x32 Plinker

(dead-returned) Gamo Hornet Maxxim .22 w/Gamo scope

Benjamin 392 .22 w/Barska 3-9x32

Daisy Red Ryder

Beeman P-17

Offline Geo Schoonmaker

  • Plinker
  • **
  • Posts: 294
    • My Airgun Blog
  • Real Name: Geo
Re: One Shot Slip On LDC For Benjamin 392 ?
« Reply #10 on: February 15, 2019, 02:01:52 PM »
Thank you, I appreciate you taking all those measurements! That should be everything I need to make it happen. I've watched video on how far the pump handle moves so I've got a very good idea of the space needed for clearing everything. Should be even easier than the 13XX LDC!
  • Rolla, Missouri

Offline Paulus

  • Sharp Shooter
  • ****
  • Posts: 909
  • pop goes the rattus rattus
Re: One Shot Slip On LDC For Benjamin 392 ?
« Reply #11 on: February 16, 2019, 12:58:27 AM »
I cant wait to see what you come up with. My need for a LDC and scope has been the things that has kept me from buying a 392, and the reason I bought the Dragonfly.
  • The dry side of Washington State.
A very pleasantly surprised member of the Daisy 880 club. Between my typing and auto correct I cant communicate.

If you havent tried RWS pellets in a while give them a try.

Offline ped

  • Marksman
  • ***
  • Posts: 473
  • yes
Re: One Shot Slip On LDC For Benjamin 392 ?
« Reply #12 on: February 16, 2019, 05:55:46 AM »
I do a few that will fit the benjamins and Sheridans
  • uk

Offline ray1377

  • Get a P-rod, they said........It will be fun, they said :(
  • Sharp Shooter
  • ****
  • Posts: 504
  • Master of the 1000 inch shot.
  • Real Name: Ray
Re: One Shot Slip On LDC For Benjamin 392 ?
« Reply #13 on: February 18, 2019, 11:02:35 PM »
Following with much interest :)

Ray
  • New Albany, MS
All that is needed for evil to triumph is for good men to do nothing.

A government big enough to give you everything you want, is strong enough to take everything you have.

They that give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety.

Offline stevemag

  • GTA Senior Contributor
  • ******
  • Posts: 2221
Re: One Shot Slip On LDC For Benjamin 392 ?
« Reply #14 on: February 18, 2019, 11:09:37 PM »
following
steve

HW95L .22
xs25m .22
xs28m .22
QB78D .22
Hammerli 850 .22

GTA - The best place for discussion about Air Guns.
 

Thank you for Supporting GTA!
Sponsored Ad: