Mainspring data thread

[Phil Russell]

As promied, the measurements from a recent SFS HW95K
SFS spring HW 95K

30 active coils
3.46mm wire
3.95mm gaps
19.75mm o/d
13mm I/d
223mm free length
16mm preload gave 890fps with 8.4gn .177 JSB

Cheers

John

Thank you for this information. I note, however, that you would be running a tad hot if your figures are correct. Have you recorded the requirements for 'not hot' version?

Cheers, Phil

[Snooper601]

Thank you for this information. I note, however, that you would be running a tad hot if your figures are correct. Have you recorded the requirements for 'not hot' version?

Cheers, Phil

Typo fixed 790fps

J

[Phil Russell]

Hi J
Thanks for the correction. I have added the info to my small database.
From your dimensions, your SFS spring seems a bit heavier, but shorter, than some others.:

WEIHRAUCH HW95 19.6 13.6 3 245 31 Cobham
WEIHRAUCH HW95 19.8 13.6 3.1 270 Versandhaus

I hope the above is self explanatory. the Cobham and Versandhaus terms are where I found my information.


And to the post regarding Titans 13, 14, 15 .... my info only goes up to No. 12 so I would like to know as well if they do more.

Cheers, Phil