Valve assy .177 .25 ??

[blower]

I just bouth valve assy .177 and .25 but the are the same transfer port are 0.140 the measured over all is the same,the only diference is the spring,.177 hard spring,.25 a softer spring.
What have i bouth.(GOOGLE TRANS.)
cheers
Per

[RayK]

.177 hard spring,.25 a softer spring.

The stiffer poppet spring gives longer, flatter shot string at a cost of lower peak power - similar to results with BHB o-rings.

Softer spring allows higher peak power. This is why the stock Gen I 25 M-rods often get higher peak velocities with stock parts than with Gen II 25 caliber Marauders. Some guys seeking ultra-high power have eliminated the poppet return spring altogether.

Ray

[blower]

.177 hard spring,.25 a softer spring.

The stiffer poppet spring gives longer, flatter shot string at a cost of lower peak power - similar to results with BHB o-rings.

Softer spring allows higher peak power. This is why the stock Gen I 25 M-rods often get higher peak velocities with stock parts than with Gen II 25 caliber Marauders. Some guys seeking ultra-high power have eliminated the poppet return spring altogether.

Ray

thanks Ray K

I think that these are two .25 valve assy i have and not a.177 and.25 as i order,is it only the spring that is the different in gen ll valve assy in .177 and .25.
But i may be wrong.

cheers
Per