Why does the Webley Vulcan behave so well?

[evert]

Heavy piston of quite large diameter, but it still behaves calm during recoil if set up with the correct spring.
Is it just a good combination of stroke, diameter, piston weight and compression?

[Shed tuner]

the small port probably balances out the heavy piston.
lighter piston and 3.0mm port would be a good test

[evert]

the small port probably balances out the heavy piston.
lighter piston and 3.0mm port would be a good test

Disturbing guns that work as well as my Vulcans is not something I want to start with...
The recent threads about dream airguns has my head turning again... The Vulcan just suffers from short forks, which really is a shame.
A Supersport has a much more stable barrel, even if it only has a pin like the Vulcan, but the barrel locks up a lot better.

And then theres Micks recent work on the Diana 35, which puts his action closer to the Webley Vulcan specs.
Maybe a modded Diana 35 really is the perfect sporting breakbarrel...

[HW777]

Heavy piston of quite large diameter, but it still behaves calm during recoil if set up with the correct spring.
Is it just a good combination of stroke, diameter, piston weight and compression?

What spec of spring are you using in you Vulcan ?

[evert]

What spec of spring are you using in you Vulcan ?

Jim Maccari/ARHs HW50/99 spring: https://www.airrifleheadquarters.com...88/1979288.htm
With tight guides and some extra spacing it duplicates this kit: https://www.airrifleheadquarters.com...488/552850.htm

I get around 11fpe in good Vulcans with this setup, some more in the .22's, and some less in the .177's

[PCPShooter]

heavy piston of quite large diameter, but it still behaves calm during recoil if set up with the correct spring.
Is it just a good combination of stroke, diameter, piston weight and compression?

yep ..

[elewis411]

Anybody know if the bore or stroke and maybe piston weight even was changed from the mk1 and mk2 as I had a mk1 which was one of the best hunting rifles I ever owned and took many many rabbits/ rats / crows etc but I just couldn’t get on with the mk2 I bought and gave up on it after a few month’s, both were .22.

[jjjohn]

The spring dampener was a milestone in spring guns imho.

[Mach 1.5]

Had a venom tuned MK1 back in 1983 and it shot very well. Mach 1.5

[Chrisj.]

I have a webley vulcan mk2 Carbine venom tuned at webley , it’s a stage 2 tune what ever that is . It shoots very well