What work did you just do?

[quickster47 †]

Carl, How in the world did you hold the alum tube to thread it.   I gave up on threading some tube because I thought I would dent or bend it trying to hold it in place while threading.

What I did, since I only have a 3" lathe - I think that is the correct size, was mount that huge 13/16x28 tpi tap in my 3-jaw chuck, put my free floating centering piece in the tail stock and then put the tube in between the two.  Then started slowly, very, very slowly, working the tube up on the tap by turning the 3-jaw chuck by hand and using lots and lots of lubricating fluid.  First one took me about three hours, but the second one only two about an hour as I greatly improved my process and took advantage of my previous experience.

Carl

[kopavi]

I messed with my 1377 trigger a bit.  Pulled the spring out of the handle, wandered off to a good hardware store and went through their spring collection.  Found a spring of the same diameter, approximately the same length with about half the spring rate, much softer.  Trigger is not a "hair" trigger but much lighter than stock.   I like it.

[WyoMan]

The "two-stage" 13xx" pump mentioned above by airmec is very interesting.  Two things immediately come to mind; the spring has to be heavy enough to hold the inner piston back until the tube is sealed during all strokes, and the pump arm has to extend farther.

If interest continues, perhaps this should be moved to its own topic.  If I ever get my lathe, this will be something relatively easy to machine.

Exactly!...good call. I don't think the spring would be much of a challenge but modifying the linkage so the pump can take a "full gulp" puts this into really custom territory (as well as the two-stage piston). I think it's a good idea. The first stage pump effort should stay pretty consistent. The second stage effort will build with the valve pressure but you've got the huge mechanical advantage near the end.

Hope someone can try this 

[quickster47 †]

Hope someone can try this 

WyoMan, you were seriously into pumpers and experimenting with them so this should be right up your alley.

Go ahead, give it a go. 

Carl

[WyoMan]

I was, Carl...but sitting on the sidelines now. There are better two-stage systems out there...e.g. Alecto. It compresses air on the opening and closing of the pump lever. Huge swept volume and about 10 fpe in four pumps (in .22). Not bad for a pistol.
It's much easier to pop in a C02 cart and get more than that  ...still like the pump guns though 

[quickster47 †]

I was, Carl...but sitting on the sidelines now. There are better two-stage systems out there...e.g. Alecto. It compresses air on the opening and closing of the pump lever. Huge swept volume and about 10 fpe in four pumps (in .22). Not bad for a pistol.
It's much easier to pop in a C02 cart and get more than that  ...still like the pump guns though 

Have to agree with you on those Webley Alecto pistols.  I've had a couple of them and they are impressive shooters.

Also, I more so agree with you on the ease of CO2.  Always been a fan of that Powerlet and its super convenience.

Carl

[Ken]

Just installed a front barrel band from Davio and 1701p trigger assy on my 1377. No slop in pump arm and nice trigger now
                                                                                                                              Ken

[quickster47 †]

Just installed a front barrel band from Davio and 1701p trigger assy on my 1377. No slop in pump arm and nice trigger now
                                                                                                                              Ken

What hammer did you use with the 1701P trigger?

Carl

[Ken]

What hammer did you use with the 1701P trigger?

Carl

Got the hammer from Davio also. Might try the jb-weld on the hammer that I removed for the next one.
                                                                Ken

[oldgearhead]

I finished re-mounting my 3x scope.
Colonel Cooper would be proud, don't you think?

[CraigH]

Yes, and easily to load pellets.  What is the eye relief on that scope?

[quickster47 †]

Wow, that scope must have some serious eye relief.  Unless, of course, it is a true pistol scope.

Carl

[oldgearhead]

Eye relief is 12 inches. It's an NC Star Pistolero on a Hawke HM17017 adapter.
It's not really a pistol scope more of a scout scope..

[quickster47 †]

Long as it gets the job done is what counts. 

Carl

[BillK]

I have been cloning a Crosman 180 from available parts.  I have a lot of stock work left, but I did get to shoot it.