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Roll Pins
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Author:  Doc Sharptail [ Wed Apr 27, 2016 3:56 am ]
Post subject:  Roll Pins

A tool for installing and removing roll pins:

Image

Yeah, it's a quickly, and easily modified 3" "C" clamp.

There's a 13-XX pivot pin in there, all ready for starting. Black tool at left is actually 2 roll pins driven together- both smaller than the pivot pin- for final seating and removal.

Note- Crosman roll-pin pivot pins still have a taper. From the goofy manual non digital mike at work, the total run-out is .002" The holes in the tube are sized accordingly. That's on the roll pin out of the 13-77 I just bought a week or so ago...

Image

There's the hole cut in the top of the c-clamp. It allows for use of a smaller diameter installation guide pin, and makes pin removal a lot easier...

Image

Hole in threaded section for starting pins, and used for the seater/removal pin...

I think the C-clamp was all of 3.97 at Peavey Mart. A little heavier duty than the $ Store versions.
I had made a smaller one of these before, and it grew legs...

Tools required:

A bench vise is nice for pulling the idler off the clamp shaft. A drill and bits according to size. A sharp center punch makes doing this a lot easier.

This tool sure beats the hammer and beat on the drift method- simply because it's less likely mark things up...

Regards,

Doc Sharptail

Author:  airmec [ Wed Apr 27, 2016 10:41 pm ]
Post subject:  Re: Roll Pins

That's interesting, Doc. I made a similar tool at school, last week. It was a class project that I ''converted'' into something useful for my pumpers. As you said, it sure beats the hammer and drift punch method :) .

Cheers!

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Author:  ricksplace [ Thu Apr 28, 2016 5:44 am ]
Post subject:  Re: Roll Pins

Great home made tools! I'm definitely going to make one. I like the hole in the base for the pin to exit through.

I do a similar thing with hockey pucks as a base for the "tap through" method. I cut a "V" in the top of the puck (shallow) and drill a few different size holes through the "V" for the pin to exit through. The puck provides a solid mar-free surface for round items. Just turn it over for a flat surface for flat stock.

Author:  Doc Sharptail [ Thu Apr 28, 2016 10:47 am ]
Post subject:  Re: Roll Pins

Airmec's is much nicer than mine 8)

Ricksplace describes a pin-block... I have a small one in wood,and as usual, over simplified. Mine just has different size/depth holes, and I've been meaning to put a groove or v-cuts into it...

Regards,

Doc Sharptail

Author:  airmec [ Thu Apr 28, 2016 11:03 pm ]
Post subject:  Re: Roll Pins

Thanks Doc :) . I'm sure yours is easier to make, though, and way more affordable!

Cheers!

Author:  Whitewolf [ Fri Apr 29, 2016 10:44 am ]
Post subject:  Re: Roll Pins

Just a tid bit for those who may not know taper roll pins install from left to right. Front sight blades install from right to left. Just to help those who may not know exactically how gun manufacters do things. :wink:

Author:  vAgRaNt [ Fri Apr 29, 2016 2:00 pm ]
Post subject:  Re: Roll Pins

Tip of the hat to both of you! It's nice to have "the-tool-for-the-job".

My homemade pin block works for me, but it doesn't make me appreciate any less, your dedicated devices. Well done!

Quote:
. . . taper roll pins install from left to right . . . Front sight blades install from right to left . . .

I thought the taper pin thing, was a standard of manufacturing and assembly, across all manufacturers that recognize standards. . .
I didn't know about sight blades. Good Info.

Author:  Doc Sharptail [ Fri Apr 29, 2016 6:07 pm ]
Post subject:  Re: Roll Pins

Crosman hasn't been very steadfast about taper direction, over the years, especially when it comes to pivot pins. Your caliper micrometer is your friend prior to removal here...

This was a hard lesson for me to learn- I got hooked into thinking left to right, and ended up boogering the pivot pin holes on more than one Crosman pumper...

Regards,

Doc Sharptail

Author:  Daryl [ Fri Apr 29, 2016 7:23 pm ]
Post subject:  Re: Roll Pins

Well done guys thanks for sharing. So- I can cut back on my super heavy hammers now! :shock:

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