Webley pistol power conundrum

[webman]

I've fitted a heavy duty (unknown make) spring into a Webley Premier pistol, and the velocity was quite a bit higher than with the standard Webley spring. However, when cocking it I thought something might break (including my wrist!) and the recoil was violent. It goes without saying that all the components in the gun need to be balanced, so that the velocity is adequate without undue stress on the pistol or shooter.

[Geezer]

I've fitted a heavy duty (unknown make) spring into a Webley Premier pistol, and the velocity was quite a bit higher than with the standard Webley spring. However, when cocking it I thought something might break (including my wrist!) and the recoil was violent. It goes without saying that all the components in the gun need to be balanced, so that the velocity is adequate without undue stress on the pistol or shooter.

And that's what intruiges me. The Hurricane/Tempest is basically a Premier (originally planned as the Premier MkIII/Superpremier). I can't quite work out what they did to make it generate and cope with the higher power.

[Rickenbacker]

Apparently, the high-powered US 'Beeman' imports had Titan mainsprings fitted. Info from here: http://www.airgunbbs.com/showthread....rricane-ft-lbs

[webman]

Another way of looking at the velocity figures is "why was the Premier lower powered than the other models?" When the Premier was first produced, there were lots of problems with the new material being used for the piston washers. This is one reason why there are so many "letter" versions of this model ie A, B etc.

[Benelli B76]

Turning up a thin lipped polyurethane piston seal for these pistols makes an improvement to performance. Just done this to replace some knackered old ones.

Baz

[Rickenbacker]

Have you tried machining a piston for an o ring seal in these Baz? I guess that could give the most volume, if the cylinders are true enough? Phil ��

[Benelli B76]

Phil, no, have not done that as I do not own one myself, these are all repair jobs. Sounds like something to try.Anything is better than the solid hard blue seals you find in some Webleys. Funny enough I just had to sort out a BSA Mercury rifle with the same O ring setup on the piston. These are one of the worst rifles for having jammed pistons, especially if they have a nylon piston head.

Baz

[Benelli B76]

Have you tried machining a piston for an o ring seal in these Baz? I guess that could give the most volume, if the cylinders are true enough? Phil ��

If I grind an O ring groove in the piston head to get more volume by removing the piston seal, I would have to remove some material from the end of the piston to install a polyurethane buffer a la FWB 65 piston. If not it would be metal smashing against metal. Still possible I think. Will check next time I get one in.

Baz