series 70 goldcup factory mainspring ?

[1911goldcup]

I have a series 70 GCNM mfg. 1981. Does anyone know what mainspring it left the factory with ?

[lksstbls]

Its stated by those who apparently know, that the original S70s were shipped with two springs, one at 12# for very light loads, and one at 16# for heavier reloads and factory loads. I got my S70 used, and don't know what spring it had in it, although I suspect it was original. It now has a standard 16# spring which works fine with everything from modest reloads up through factory ammo.

[1911goldcup]

I meant the hammer spring

[lksstbls]

I meant the hammer spring



Sorry, I missed your clearly stated question. Senior moment.


http://www.gunsprings.com/1ndex.html

This is the website for Wolf Springs. They list the standard for full size 1911s, including the Gold Cup as 23 lbs.

[Jump Boot]

23 lb. Hammer spring.

[Jim Watson]

The last Gold Cup I had did not have a 23 lb mainspring. It gave misfires with a .22 conversion so I put in a full power GI mainspring, presumably 23 lbs. That set off the .22s but it also wore the hammer hooks down and I had to have the hammer and sear replaced.

I'd go with a 19.