Stroke lengths, TP sizes and SCR for various springers...

[T 20]

Recently I stripped an earlyish gun (127xxxx serial no, around 1992/3 production) and also a later one (165xxxx, around 2005 production). The stroke of the 30mm diameter piston in the earlier rifle measured around 63mm, while that of the later gun came in at around 84mm. The piston mass for both was a portly 396g, while the inertia weight inside weighs around 73g.

Interesting stuff, Scrinja, I'd only ever known of the 90 using two different stroke lengths but now you've told us of a third --- could the 63mm stroke version be for the German market ?

I'll nip out and measure mine in a bit if it stops raining.

[Shed tuner]

Interesting stuff, Scrinja, I'd only ever known of the 90 using two different stroke lengths but now you've told us of a third --- could the 63mm stroke version be for the German market ?

I'll nip out and measure mine in a bit if it stops raining.

mine is about 80mm too, and we know the FAC is the longer. I think you might be right Mick - German 7 joule version.

[T 20]

mine is about 80mm too, and we know the FAC is the longer. I think you might be right Mick - German 7 joule version.

I wonder if the German power guns still use the F inside the pentagon mark to denote 7 joules version, Jon ?

[arnie2b]

I wonder if the German power guns still use the F inside the pentagon mark to denote 7 joules version, Jon ?

To comply with German law they have to, if the gun is sold in Germany.

[T 20]

To comply with German law they have to, if the gun is sold in Germany.

Thank you, Arnie.

I was unsure if the mark was still used.



All the best Mick