GTA

All Springer/NP/PCP Air Gun Discussion General => Machine Shop Talk & AG Parts Machining => Engineering- Research & Development => Topic started by: sixshootertexan on March 02, 2014, 02:49:45 PM

Title: Crosman Spring rate
Post by: sixshootertexan on March 02, 2014, 02:49:45 PM

I've search the internet and can't find what the spring rates of a Disco and the 22xx hammer springs are. I need something in between the two.

Title: Re: Crosman Spring rate
Post by: rsterne on March 02, 2014, 04:26:37 PM

A 13XX/2289 hammer spring is in between.... All three are just under 2" long until set....

EDIT: Approx. spring rates

22XX 4.4 lb/in
13XX 6.5 lb/in
Disco 8.7 lb/in
2" x 0.040" 11.6 lb/in
1.75" x 0.040" 13.8 lb/in

Bob

Title: Re: Crosman Spring rate
Post by: sixshootertexan on March 02, 2014, 04:42:24 PM

Thanks Bob. I just did a test with a nail and weight. I got 4.597 for the 22xx spring and 8.23 for the disco spring. So I guess I was close.

Title: Re: Crosman Spring rate
Post by: rsterne on March 02, 2014, 06:36:59 PM

They will differ slightly, spring to spring.... My Disco spring was already "set" so a bit shorter, hence a slightly higher rate....

Bob