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Looks like hammer valve spring in photo is wrong diameter, wouldn’t it locate on shoulder on smaller diameter. As Crank says he has a screwed plate in his design so he can adjust the valve opening and this could have location for spring. I want to draw this up in my cad programme of the whole...

Hi Crank enjoyed seeing what you did to this super 10 I have just managed to get an old mk1 in .22 and looking at replacing factory regulator as you have done, any drawings would be great with how you did it and which huma regulator you used, I can do all my own machining but just need a few...

The extension has the same retaining angle as the piston with a lead in angle So when I fitted it I put a slight radius on piston retainer, not everyone will want to do this but I did and with a dab of silicon and a smart smack the extension snaps into place with no screw required, I put 4 saw...

Mr Brordsman uses his in FT shooting so I would say that it would be good in competition use. He explains it more in depth and has printed results in ft/lb and his resulting observations of his modification.

Winter here but not to cold, tested and zeroed with temperature about 14C The guy that did one out of similar material and Viton o’ring Has not had to strip it down since first assembly in over 4 years so longevity should be ok and reliability well he’s still on his first O’ring and consistent...

Modifications to second hand aa Prosport .177 with twangy action. Short stroke was on my mind so went ahead and made my own kit. Just got finished and Prosport is much better no spring twang as with the old loose spring guide Turned a nice tight one up in Nylatron as are the piston extension...

nbroardsman is where I found the info he has a few air rifle tips on his site. I just typed in nbroardsman TX200 but page I read was from address below. My mod is going very good, short stroking has reduced it to 11.25 ft/lb But very nice to shoot I’m using jsb 10.3 in the Prosport, could...

Didn’t really know best place to show this Modification but hope it will be useful for someone. Someone might suggest better position for post.

Just done a short stroke modification to my .177 Prosport but would also suit tx200mk3 only recently got the gun but spring very twangy so decided to give it a going over, it’s second hand but nice condition. Made piston extension spring guide and top hat out of Nylatron . The piston extension...