Will this work? Meteor Mk5

[lightning22]

The way I'm reading it you will be increasing the preload by spacing the spring at the piston end. You would certainly gain some extra swept volume but I'm not sure what benefit you'd gain from the buffer.

[duomatic410]

Your piston could end up hitting your cocking lever???? john

[coburn]

I think thats what John Bowkett used to do to get 12ftlbs out of a Meteor.

[duomatic410]

Gggr.
Send me your address. John

[lightning22]

I think thats what John Bowkett used to do to get 12ftlbs out of a Meteor.

John did quite a few things to get 12ftlbs out of the Meteor, looking inside mine found a steel piston head with a white square section seal, longer stroke, heavy piston weight, a rather stiff spring and a radiused transfer port.

It's interesting but not very nice to shoot and the rubbish BSA scope rails mean you end up catching the scope as it tries to exit stage left.

My next little project is to make a piston head that will take a proprietary parachute seal and see what difference it makes before increasing the stroke.

Rich

[ggggr]

I would have used washers if I had enough of the right size or one thick one---thinking that these would act as a piston weight. only doing it as a bit of an experiment as I dont do anything other than plink. I haven,t got a chrono so I wont be able to tell really. I actually fitted a new mainspring in this gun as the one it came with was well knackered---AND it was one of those copper coloured jobbies I got from M.A.G. rather than a silver streak so I wanted to see if it would fit ok. This isn,t very scientific either but the spring went in ok using my bit of saddle stem with slots cut in it, without the need to resort to using gloves to protect my delicate hands. I therefore thought that while the spring is longer than a sliver streak, that it must be "softer".
Confession time. The gun was making a horrible racket when cocked(even before), which I put down to the rubbing pad missing from the inside of the stock. I cut a slim piece of something a nice chap had sent me for such purposes and glued it in place, The action wouldn,t go in the stock and I spent an HOUR trying to thin the pad. I ended up heating a bit of flat bar and burning it to the right thickness. It cured it though

[Mike95]

What you really have to worry about is the circlip parting company with the rear of the piston head while cocking and leaving the piston head jammed in the cylinder, a common occurrence with this model. I recommend a new circlip of some type after deepening the groove on the rear of the piston head. Better still, find a keyhole type piston and head.

Mike95

[duomatic410]

FUNNY ANOUGH.
I Have just got a piston key/hole type come in for repair and its sheared off leaving you know what at the breach end.

Never had one of these fail before. john

Have now managed to get it out