anyone tried the lothar walther barrel on a crosman co2 pistol?

[eyebull]

Have you also played with fitting top hats and rear guides for the hammer spring?

It's something I've often thought of and maybe improve the refinement? Can't remember if I've seen references on the 'net or if people like G-Mac already offer them? So, once a spring and preload value has been arrived at, make those items to give the correct preload.

Have you also tried polishing the hammer and the tube? Again, it's something that I haven't got round to, but may also help?

You can put a top hat and guide on the hammer spring - .22 short cases are good for this - as well as polish the hammer and tube, and it does make it smoother to cock, but it doesn't really address the issue of hammer bounce. That's not to say that a certain amount of balancing the valve and hammer springs won't reduce it somewhat, but it is made more difficult by the fact that you always need a certain amount of force against the valve spring in order to pierce the CO2 cartridge with the initial shot (unless you are bulk filling, but then if you are using a buddy bottle you have even more to gain from the SSG).
The point of the SSG is to give negative preload, if you like, so that when at rest and uncocked the hammer spring is not in contract with the hammer at all, and the hammer spring is under preload. This means that when the hammer comes bouncing back off the valve pin after firing, it can't pick up enough energy from the hammer spring to knock the valve open again. It's difficult to get the same effect when the hammer is in contact with springs at both ends.

[TonyL]

Good info, Eyebull.

[--ped--]

if you look on the GTA forum you'll find pages og info on SSG's personally with the exterior adjusters and the way the power increases can be increased with the said adjusters then it makes it a grey area
I've a walther barrelled 2300 and I've fitted walther barrels to 2250's and an outdoorsman a cp1

[eyebull]

if you look on the GTA forum you'll find pages og info on SSG's personally with the exterior adjusters and the way the power increases can be increased with the said adjusters then it makes it a grey area
I've a walther barrelled 2300 and I've fitted walther barrels to 2250's and an outdoorsman a cp1

If you look at my posts above you'll see it's pretty easy to make these non-adjustable from the outside, so no grey area.

The guys on the GTA forum did it as a matter of convenience, not because it inherently *has* to be externally adjustable.

[--ped--]

if you look at the original ssg by Bob Sterne you'll see that the adjustment is needed to a degree and that they weren't designed for co2 more the big bore pcp's and was a means of getting the efficiency up
on the original the preload was adjusted from the rear as was the distance between the hammer and spring guide
personally think fitting a 2300 valve reducer and a short hammer spring and a power adjuster gets better results on co2

[eyebull]

if you look at the original ssg by Bob Sterne you'll see that the adjustment is needed to a degree and that they weren't designed for co2 more the big bore pcp's and was a means of getting the efficiency up
on the original the preload was adjusted from the rear as was the distance between the hammer and spring guide
personally think fitting a 2300 valve reducer and a short hammer spring and a power adjuster gets better results on co2

I've covered all of this.

You have to adjust it when setting it up, but that's no different to fitting a new hammer spring set-up.
They may have been originally designed for PCP, but a challenge was then issued on that forum to apply it to the 2240, which many did successfully.
Fitting a 2300 valve reducer and new hammer spring and fitting a power adjuster sounds like rather more hassle, and more money, than making an SSG, which took me less than 20 minutes to make and fit including the time taken to disassemble and re-assemble a 2240.

I'm getting 120 3.5FPE shots out of a 12g caplet [edit: in .177 too], and struggling to see where the big problem is with this.

By all means give it a try.

[--ped--]

yes I remember it and very few actually bothered to do it from what I remember
I know how to make them and have made a few and I can turn a valve spacer up in a few mins , clip a hammer spring close and grind it and fit a disco rear tube cap (but could make a power adjuster from scratch)in the same time it takes you to make an SSG