ProSport - to de twang or not.....

[look no hands]

While you are at it swap the nasty AA seal for a lovely Vortek O Ring and Bob's yer uncle even better.

Strangely enough that's what I've done but I have put a complete delrin kit in with a different spring as well, so also getting rid of the over heavy piston weight, I do have to admit the Vortek O ring seal is good.

Pete

[lensman57]

Mine did twang a touch out of the box. One of Tbs guides and top hats sorted it out. Later I dropped a Vrotek kit in it which trnsformed the firing cycle. Changing the guide and the top hat will not adversely affect accuracy if the guns power is kept in check.

A.G

[Hsing-ee]

Get tinbum to make up a spring guide for your spring. It will stop the twang and more likely than not make it MORE accurate than before - although this might only be detectable at 55 yards in still air.

Do what your Auntie Pete says for heaven's sake!

[look no hands]

Do what your Auntie Pete says for heaven's sake!

Oi! less of the blaspheming, it's easter don't you know

Pete

[The Squire]

i have a Pro Sport that despite a TbT kit and a new Titan spring still had a bit of a twang, it was still devastatingly accurate though. This afternoon I managed to squeeze in a sleeve fashioned from a pop can and twang appear to be no more.
Hence, if you've got a metal can and an hour to spare it might be worth a go.

[lensman57]

i have a Pro Sport that despite a TbT kit and a new Titan spring still had a bit of a twang, it was still devastatingly accurate though. This afternoon I managed to squeeze in a sleeve fashioned from a pop can and twang appear to be no more.
Hence, if you've got a metal can and an hour to spare it might be worth a go.

They either use whatever spring they have at hand at the AA factory and we know that some of them have different wire gauges or the inside of the piston is machined differently each time. I can't even get a 0.1mm thick paper inside the cylinder even if the spring is not compressed.

A.G

[peddy]

A prosport Shouldn't twang at all considering what they cost new!! It can't cost much in relation to what the gun costs to fit proper fitting guides a piston sleeves. No wonder Nick does so well.

[StellaArtois Sr]

My ProSport is 1 of 2 untouched rifles and I've got and I have 16 of them. I can assure you though the moment it starts to Boing I will be ordering a TbT kit of guides to get rid of that boing. I have done a lot of
de-boinging rifles and only recently my HW80 developed a boing of which I will be sorting out tomorrow with a TbT pro kit. I may be putting the kiss of death on this, but as of yet none of my rifles have lost accuracy by putting a set of guides in them. They are not hard to do, but you get such a sense of satisfaction when your rifle is very quiet and shoots beautifully, knowing you made it that way.