Custom

[Moosepatrol]

I have a black widow with the original internals. I want to replace the them with a lighter bolt etc. Anybody know of replacement parts like Lapco etc.

[wolf13]

just to be sure, we are talking the nelson pump here right and not the aka spyder or cocker?

[Moosepatrol]

Yes nelson based, bought in 1989 the internals still work but in reading the forums I have heard it stated that you could increase the efficiency co2 wise with a newer series of internals.

[blackrain]

Just polish everything up. Reduce the friction. See how that works for you.
Later,
Blackrain

[SEKTape]

Originally Posted by wolf13

just to be sure, we are talking the nelson pump here right and not the aka spyder or cocker?

Sorry, not the autococker.

[joelrf600r]

poilsh/cleaning/lube and then changing the springs will give you the most bang for the buck. You may want to change the valvetube in the future if you really want to play around, but it's not always necessary. as a starting point, I tend to run a fairly heavy valve spring for consistency, then with the velocity adjuster backed out all the way(if your bolt/hammer is adjustable) start with the weakest hammer springs moving to stronger until you hit about 250-260fps. then either adjust or shim to the FPS you want. on the black widow w 11" barrel that a friend of mine has, it's good for 25+ out of a 12 gram, and 450+ out of a 7oz tank at 275fps. he usually just puts the 7oz on and plays the entire day.

you also may want to try and find the biggest paint you can. he shoots marballizer as it seems to not roll out of the barrel as much. between that and the tiny Karnage paint the field has, there's almost a 25 fps difference, and probably a 50+ shot difference on the 7oz.

--Joel

[Moosepatrol]

Joel do you know of anybody with springs I only have the red one left from my original kit?

[Rayodder]

Since it is a Nelson based valve train, call Mike at CCI for a set of Phantom springs.

[joelrf600r]

madman makes a spring kit as well. i haven't looked for them for a while.
either one is good.

--Joel

[kidneythief]

FYI

2K Cocker springs are Nelson springs. Goout to any site that sells Cocker springs and you have it.

Theres no doubt you can tune your gun with the existing internals. However, you may want to pick up a better powertube and fluted hammer down the road. Tuning for 12 grams is a pretty difficult balancing act. You have springs, hammer weights, tuned powertubes(jet sets) expansion or the lack there of.

I always recommend you start with the heaviest (red) spring in the valve and the lightest (yellow or blue) Main spring and tune up by adding a heavier main spring. You dont want you Vel. Adjuster all the way cranked in...you'll want it around half to a quarter of the way in.

-Jake