Restored an old Crosman 1300 Medalist II

[Motorhead]

Was in Oregon over the weekend at the State FT Championship and there on a table lie an old 1970's Crosman 1300 Medalist II completely intact for $25
Not holding air we bartered and it came home for a $20 

While it had indeed been shot quite a bit in a former life nothing structurally was screwed up.
Dismantling ALL the o-rings and seals, they were hard as old boot leather with brass being well oxidized.
Being no parts really exist any longer got creative and made a o-ring sealed compression check valve, internally used SAE & Metric o-rings to get it sealed up.
Biggest issue the strike bonnet with its internal 008 quad ring ... tried a 008 o-ring and it would not seal. Going to similar tho larger metric o-ring and we get it to seal up and take " Some" compression pressure    ... "dang", pump cup is too hard as well, so ... over to the lathe making up a dual O-ring style threaded head/plunger assembly.
Back together for a test ... OUTSTANDING we get progressively more difficult pumps telling me we have air tight integrity now.

All said a complete cleaning of brass guts, lube and required long over due maintenance we have a shooting 1300 !!   

Cool little auto cocking pistol it is & a .22 caliber too.       

Scott

[Big Rick]

Well done! How about a pic?

[2K1TJ]

These are cool pistols! I have one that shoots, but it's leaky so I need to re-seal it.

Also, the rear sight screw is broken and almost impossible to find. The threaded end is drilled and tapped to receive the rear grip frame screw, so it's not as simple as running down to the hardware store.

If those quad rings are the same ones used on 140's, I think I have some. I'll drop some in the mail if you need em.

[Motorhead]

 

These are cool pistols! I have one that shoots, but it's leaky so I need to re-seal it.

Also, the rear sight screw is broken and almost impossible to find. The threaded end is drilled and tapped to receive the rear grip frame screw, so it's not as simple as running down to the hardware store.

If those quad rings are the same ones used on 140's, I think I have some. I'll drop some in the mail if you need em.

That Quad within the strike bobbin was replaced with a conventional 2mm x 4mm o-ring appearing to be working fine thus far.  Thanks for the offer tho