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PostPosted: Mon Dec 02, 2013 11:52 am 
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Joined: Fri Nov 29, 2013 8:40 am
Posts: 8
Location: GFW, Newfoundland
I have a powermaster 66 gold medalist and it does not take on any air. any ideas what is wrong ? Also, any modifications I could do while im in there?


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PostPosted: Mon Dec 02, 2013 8:14 pm 
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Joined: Wed Mar 27, 2013 9:51 pm
Posts: 89
Location: California USA
Open the bolt and pump while listening at the breech. If you hear the air coming out there, it is the valve stem, if not it's time for a pump cup. As far as mods, there is always the flat-top piston and valve, port matching (no larger than ~.140"), lighter valve spring, trigger work........ How far do you want to go?


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PostPosted: Tue Dec 03, 2013 12:38 pm 
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Joined: Fri Nov 29, 2013 8:40 am
Posts: 8
Location: GFW, Newfoundland
I want to take it far. as a project. there is no air leaking, there is no air going into the gun. At all. I am a tinkerer, I love moding stuff. So instructions on all these mods would be awesome! Is there a site, or place where I can get this information to do? :drinkers:


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PostPosted: Tue Dec 03, 2013 11:40 pm 
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Joined: Wed Mar 27, 2013 9:51 pm
Posts: 89
Location: California USA
You're on one. Search for flat-top valve posts. Just about any mod for the Crosman pumpers can be done to your 66. 8) A softer spring in the valve allows for both more air in and more pumps before air retention.


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PostPosted: Wed Dec 04, 2013 9:26 am 
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Joined: Fri Nov 02, 2012 8:41 pm
Posts: 1253
Location: Brant County
Big Bore Bart wrote:
You're on one. Search for flat-top valve posts. Just about any mod for the Crosman pumpers can be done to your 66. 8) A softer spring in the valve allows for both more air in and more pumps before air retention.


X2 just about everything that can be done to the 13XX,760's... pumpers can be done to the 66 ;) its the same valve and piston setup! just search and yee shall find lol

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