So I got my project gun

[Shed tuner]

Fingers crossed Jon, I can always add a little weight via a steel top hat if needed, I was pleased the sleeve o ring sealed straight off , its a bit awkward to install as its half a groove if you get my meaning, the bottom of the cylinder forms the front of the groove , trying to keep lost volume to a minimum.

...but looking at those numbers, and allowing for a little more preload and a slightly heavier (grams) spring, I can't see you'd need to.

Yes, I get you on the o-ring at the end - I guess you can only shove it forwards during installation

[NickG]

You were right about the spring , adjusted the guides and dropped a 97 spring in, trigger block is now just at the beginning of the thread so about 18mm preload , and its on the money , 11.2 with express and 11 with exacts , had to do a little work on the inletting to accommodate the extra stroke and the sleeve retaining screws, and its in the stock ready to shoot, I have only ever shot an 80 once before , so going to get Craig p to shoot it this weekend as he has probably shot a lot of them, see what he reckons to it.
So got to pretty it up now ordered some tube for a barrel sleeve and muzzle weight, and I have a nice two stage adjustable blade somewhere ? to go on it.

[Shed tuner]

Excellent.. you coming to the Bash ? I know it's a lot further than Mick's !

[NickG]

Yes decided that recently, will bring it with me , and the piston ringed TX stuff I have been doing.

[Shed tuner]

Yes decided that recently, will bring it with me , and the piston ringed TX stuff I have been doing.

cool.... I better dust off some of my toys too. We can compare 23mm TX, 24mm 80 with 23mm 80. Hmm.. is this starting to sound a bit geeky

[TonyL]

I bet that's going to be excellent, Nick.

And both aiming to get to Dave's Bash? Superb! Be great to see you both and your wonderfully trick toys.

[NickG]

Yes looking forward to it.
Just fiddling now and swapped to the o ring on the piston, lost a full foot pound, same shot feel same difference between pellet weights , so the piston rings are definitely more efficient, so I am putting it back in

[TonyL]

That piston ring, although maybe a little early in the testing schedule, looks to be bearing most excellent fruit then, Nick? Could be a winner and potential game changer once long term testing schedules have been completed? Unless you're already satisfied with the longevity testing side of things?

Very well done.

[phil384]

cool.... I better dust off some of my toys too. We can compare 23mm TX, 24mm 80 with 23mm 80. Hmm.. is this starting to sound a bit geeky

Starting to sound geeky!?!?

[Shed tuner]

Starting to sound geeky!?!?

Just wait 'till all that free retirment time kicks in... you'll be worse than me soon

[NickG]

That piston ring, although maybe a little early in the testing schedule, looks to be bearing most excellent fruit then, Nick? Could be a winner and potential game changer once long term testing schedules have been completed? Unless you're already satisfied with the longevity testing side of things?

Very well done.

Have put a few thousand through now and no sign of wear, looks to be good stuff, that's in the tx not the 80.

[NickG]

Took delivery of some polishing mops today so time to pretty it up , watch this space 😁

[Pro7dave]

Looking really good Nick.

[TonyL]

Have put a few thousand through now and no sign of wear, looks to be good stuff, that's in the tx not the 80.

Excellent.

[NickG]

Sorted the front end out, just need to polish the lot ready for blacking

https://photos.app.goo.gl/wkGMta4AekwY4q9i7