760 stuff

760 stuff

Joined: March 1st, 2002, 12:22 am

October 18th, 2011, 1:33 am #1


<img border="0" alt="Photobucket" src="http://img.photobucket.com/albums/v301/ ... piston.jpg">

given the similarities of the 760 and 13xx drive train, I remembered Steve n NC's post about the piston flexing,a nd robbing some power. So I thought I'd glue in some carbon fiber arrow shaft (instead of Steve's steel rod trick) to stiffen the piston. During the session with the Dremel to grind the excess CF down, the JB weld "failed" and it all popped loose. Thinking either I didnt clean the piston well enough or didnt sand it to give the JBWeld some tooth to grab on. The tape protects the cup

 

 

<img border="0" alt="Photobucket" src="http://img.photobucket.com/albums/v301/ ... 0clam2.jpg">

The is the "bolt side" clamshell. I fogged on some white to make it show up on cam. that same area is what connects to the wood on the other half.

 

<img border="0" alt="Photobucket" src="http://img.photobucket.com/albums/v301/ ... mright.jpg">   

This shows the other half that the "buffer tube" is attached to. you can see the baltic birch, which is the part the other shell mates too. Behind the trigger guard is a good sized gob of epoxie putty shaped over a small wood frame for the AR grib to attach to. 1 1/2 inch drywall screw goes thru the putty and into the plywood to secure the grip. Not sure of the long term strenght of this arrangement

 

<img border="0" alt="Photobucket" src="http://img.photobucket.com/albums/v301/ ... 0recvr.jpg">

The 2289 forearm/pump arm needs a little trimming to close completely. The clamshells are sprayed with a "hammertone" paint

<img border="0" alt="Photobucket" src="http://img.photobucket.com/albums/v301/ ... 60full.jpg">

The "assembled" gun. No valve, pump pivot, piston, or other internals. The red is from a "high solids" can of spray paint. Stuff is awesome. The buttstock was a little rough, but the pump tube was sanded smooth with 600 then sprayed with the red. the pics dont show what great coverage the paint has.

Noticed the screw just ahead of the buffer tube connection. When I trimmed the clamshells down, the rear receiver screw was cut off. Adding it to the wood block area, combined with the reinforcements added to the inside of the shells, makes all that very stiff and solid

Ive done the usual valve work, buffed the hammer smooth and burnished in some Militec, and polished the inside fo the comp tube, and burnished in Militec in the area the hammer will ride on.Tomorrow I'll put it all back together and see what it shoots like

 


dr_subsonic's pneumatic research lab
<img alt="[linked image]" src="http://img.photobucket.com/albums/v301/ ... od-1-1.jpg">
the Lunatic Fringe of American Airgunning
Southwest Montana's headquarters for Airgunning Supremacy
Proud Sponsor of team_subsonic
Last edited by dan_house on October 18th, 2011, 1:42 am, edited 1 time in total.
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Joined: April 28th, 2010, 12:23 am

October 18th, 2011, 2:02 am #2

like that red paint , looks sharper than the crap i used on my qb57..love the black-red contrast!most menacing 760 ive seen(sounds stpid , any easy way to take off the stock forearm , Im workin on that now , front trigger is done)
Last edited by robnewyork on October 18th, 2011, 2:23 am, edited 1 time in total.
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Joined: February 25th, 2011, 10:27 pm

October 18th, 2011, 3:17 am #3

<img border="0" alt="Photobucket" src="http://img.photobucket.com/albums/v301/ ... piston.jpg">

given the similarities of the 760 and 13xx drive train, I remembered Steve n NC's post about the piston flexing,a nd robbing some power. So I thought I'd glue in some carbon fiber arrow shaft (instead of Steve's steel rod trick) to stiffen the piston. During the session with the Dremel to grind the excess CF down, the JB weld "failed" and it all popped loose. Thinking either I didnt clean the piston well enough or didnt sand it to give the JBWeld some tooth to grab on. The tape protects the cup

 

 

<img border="0" alt="Photobucket" src="http://img.photobucket.com/albums/v301/ ... 0clam2.jpg">

The is the "bolt side" clamshell. I fogged on some white to make it show up on cam. that same area is what connects to the wood on the other half.

 

<img border="0" alt="Photobucket" src="http://img.photobucket.com/albums/v301/ ... mright.jpg">   

This shows the other half that the "buffer tube" is attached to. you can see the baltic birch, which is the part the other shell mates too. Behind the trigger guard is a good sized gob of epoxie putty shaped over a small wood frame for the AR grib to attach to. 1 1/2 inch drywall screw goes thru the putty and into the plywood to secure the grip. Not sure of the long term strenght of this arrangement

 

<img border="0" alt="Photobucket" src="http://img.photobucket.com/albums/v301/ ... 0recvr.jpg">

The 2289 forearm/pump arm needs a little trimming to close completely. The clamshells are sprayed with a "hammertone" paint

<img border="0" alt="Photobucket" src="http://img.photobucket.com/albums/v301/ ... 60full.jpg">

The "assembled" gun. No valve, pump pivot, piston, or other internals. The red is from a "high solids" can of spray paint. Stuff is awesome. The buttstock was a little rough, but the pump tube was sanded smooth with 600 then sprayed with the red. the pics dont show what great coverage the paint has.

Noticed the screw just ahead of the buffer tube connection. When I trimmed the clamshells down, the rear receiver screw was cut off. Adding it to the wood block area, combined with the reinforcements added to the inside of the shells, makes all that very stiff and solid

Ive done the usual valve work, buffed the hammer smooth and burnished in some Militec, and polished the inside fo the comp tube, and burnished in Militec in the area the hammer will ride on.Tomorrow I'll put it all back together and see what it shoots like

 


dr_subsonic's pneumatic research lab
<img alt="[linked image]" src="http://img.photobucket.com/albums/v301/ ... od-1-1.jpg">
the Lunatic Fringe of American Airgunning
Southwest Montana's headquarters for Airgunning Supremacy
Proud Sponsor of team_subsonic
to see it all put together... That red just sets it off... Put a Craftsman sticker on it and you'll throw everybody off...
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Joined: April 28th, 2010, 12:23 am

October 18th, 2011, 3:19 am #4

does it come with the lifetime warranty from sears?? i think not lol
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Joined: February 25th, 2011, 10:27 pm

October 18th, 2011, 3:20 am #5

like that red paint , looks sharper than the crap i used on my qb57..love the black-red contrast!most menacing 760 ive seen(sounds stpid , any easy way to take off the stock forearm , Im workin on that now , front trigger is done)
have a roll pin punch and a mallet? That's what I use on mine to punch the two pins out...
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Joined: February 25th, 2011, 10:27 pm

October 18th, 2011, 3:23 am #6

does it come with the lifetime warranty from sears?? i think not lol
At one point Sears did sell re badged Crosmans though... We'll just call it a throw back...
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Joined: April 28th, 2010, 12:23 am

October 18th, 2011, 3:30 am #7

on the sears lunatic fringe ! i do think he voided the warrany when he chopped the bb resiviour off! lol
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Joined: February 25th, 2011, 10:27 pm

October 18th, 2011, 3:56 am #8

Sears keep sending me emails about their tool sales.. So tools have been stuck in MY head for the last week or so... I can never have enough tools...

You know, it wouldn't be too far fetched to call an airgun a garden tool.. A Crosman Craftsman home garden pellet rifle... I mentioned this on another forum but you can use an airgun for varmint control, harmful insect control, weed whacking, tree pruning, and fruit gathering...

I'd like to see somebody pitch that to Sears to get them selling airguns again... LOL
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Joined: April 28th, 2010, 12:23 am

October 18th, 2011, 3:59 am #9

i saw a "trading places " show a while ago by morgan sperlock" / the one guy couldnt live on the veggie diet, he yielded a lot of rabbit with a nice pumper airgun..(sheridan ,benjamin_).. basically its 3 cents a meal(and no ,he had no airgun background , just a shooting background)all this was done in the garden while patrolling. 3 cents a meal is wayy cheaper than any american is eating for.. so , its an economical tool!
Last edited by robnewyork on October 18th, 2011, 12:59 pm, edited 1 time in total.
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Joined: March 1st, 2002, 12:22 am

October 18th, 2011, 4:10 am #10

have a roll pin punch and a mallet? That's what I use on mine to punch the two pins out...
drove it out enough to grab with pliers and pulled it out

gently drove it in to avoid marring the TBL


dr_subsonic's pneumatic research lab

the Lunatic Fringe of American Airgunning
Southwest Montana's headquarters for Airgunning Supremacy
Proud Sponsor of team_subsonic
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