1377 with 2100 Pump tube and linkage

[point177]

I am wondering what additional parts and machining will be needed to make a hybrid out of a stock 1377, a 2100 pump tube and linkage and a 24inch barrel.
Thanks in advance for the guidance.

 

[wolfnman]

I am wondering what additional parts and machining will be needed to make a hybrid out of a stock 1377, a 2100 pump tube and linkage and a 24inch barrel.
Thanks in advance for the guidance.

I am curious about this as well. I look forward to the answer.

As a side related item, this year's Crosman product catalog shows a 362. It's in .22 but appears to the the 13xx design but in a rifle size, with longer tube and pump arm. In essence it looks like Crosman is building something like this hybrid from the factory.

[flaircraft]

I'm doing the same basic thing.  It's my understanding that the parts all pretty much just bolt together like the factory intended.  There are two main difficulties:

First - there is no place for the front 13xx grip screw to go on a 2100 tube.  The common solution to this has been to basically use a hose clamp or similar in place of the front grip screw, to hold the grip onto the tube.

Second - the valves aren't the same; a 13xx valve is (IIRC) longer than a 2100 valve so it won't fit correctly in the 2100 tube.  If you want the larger valve volume of a 13xx, you have to do some machining to the valve to make it fit.

Rsterne also did the exact same thing you are wanting to do, read one of his many threads on the project here:  https://www.gatewaytoairguns.org/GTA/index.php?topic=35237.msg327781#msg327781

and also search the site for "uber pumper".

[point177]

Thank you for the link.

I'm doing the same basic thing.  It's my understanding that the parts all pretty much just bolt together like the factory intended.  There are two main difficulties:

First - there is no place for the front 13xx grip screw to go on a 2100 tube.  The common solution to this has been to basically use a hose clamp or similar in place of the front grip screw, to hold the grip onto the tube.

Second - the valves aren't the same; a 13xx valve is (IIRC) longer than a 2100 valve so it won't fit correctly in the 2100 tube.  If you want the larger valve volume of a 13xx, you have to do some machining to the valve to make it fit.

Rsterne also did the exact same thing you are wanting to do, read one of his many threads on the project here:  https://www.gatewaytoairguns.org/GTA/index.php?topic=35237.msg327781#msg327781

and also search the site for "uber pumper".