springer overspringing

[hmangphilly]

morning all

I've seen a couple of references to "overspringing " of springers .

Sure i get the idea of the term but , could any one expand or explain for me please .......how to recognise / rectify .
ta

[Shed tuner]

morning all

I've seen a couple of references to "overspringing " of springers .

Sure i get the idea of the term but , could any one expand or explain for me please .......how to recognise / rectify .
ta

Hard to cock, feels harsh and slammy, down on power., innacurate. Emperically, reducing preload increases power.

[18 Wheeler]

The springer equivalent of constipation.

[PCPShooter]

'too much spring', like attempting to get a BSA lightening in 177 to over 10.5ftlbs, or many hw99s too in 177 .......

[Black Beard]

It is when the piston slams in to the end of the cylinder on the forward stroke. Caused by too powerful a spring, too much preload, too much lost volume, etc.

Often found on old amateur tuning attempts involving a Ox spring, drilled transfer port and rattled fillings.

[NickG]

Too much spring, can put more pressure into the seal causing it to expand with more pressure into the cylinder walls causing drag, counter productive , ie the more spring you use the more drag you get and the power goes down