Rainmaker - help with Valve Shaft Spring

[Rainmaker]

I'm missing the valve shaft spring (Part #20 on this diagram: https://paintball.tippmannparts.com/diagrams/Brass%20Eagle%20Rainmaker%20Diagram%20080825.pdf)

Anyone know the dimensions and approximate spring rate of this spring? I've got a box of random springs from Lowes to try out, but the one that seems the closest feels a little stiff

(https://tippmannparts.com/collection...e-shaft-spring)

[Fubarius]

Its basically a Nelson pump valve spring. Any phantom or autococker spring kit should have one close.

[Fubarius]

If using a random spring, a bit stiff could be ok. Might be a tad bit more efficient. Try it and if you can't get up to velocity start cutting off coils.

[Jonnydread]

Rainmaker posting about Rainmakers

[Breakdown]

.720 free length
.340 OD
.036 wire dia
6 total coils (4 free)

online calculator gives ~21lbf/in

[Rainmaker]

Dude! Thanks so much!

[Breakdown]

Dude! Thanks so much!

No problem, mine happens to be disassembled on my workbench still!