1911 Main spring tuning
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rich.tullo
DavidR
6 posters
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1911 Main spring tuning
Ok, changed out my flat Mainspring housing for a new Wilson wedge, its sort of a cross between a flat and a arched. Went to put the spring and caps in the new one and its like its not as deep inside, spring was out a little farther and it took more force to get it in and the retaining pin in. Has anyone ran into something like this, or have any modified the spring? I have had a few custom built guns with non stock length m/s springs so I know some do it. Just looking for tuning tips to this very important part that doesn't get talked about much.
DavidR- Admin
- Posts : 3032
Join date : 2011-06-10
Age : 70
Location : NRA:Expert, Georgia
Re: 1911 Main spring tuning
Sound like my ILS when I went to a GI spring and cap.
james r chapman- Admin
- Posts : 6372
Join date : 2012-01-31
Age : 75
Location : HELL, Michigan
Re: 1911 Main spring tuning
Actually the spring I put in was a new 17,
DavidR- Admin
- Posts : 3032
Join date : 2011-06-10
Age : 70
Location : NRA:Expert, Georgia
Re: 1911 Main spring tuning
Do you have a dial caliper that you can measure depth of the mainspring hole on both housings for comparison?
Jon
Jon
Jon Eulette- Posts : 4399
Join date : 2013-04-15
Location : Southern Kalifornia
Re: 1911 Main spring tuning
Jon Eulette wrote:Do you have a dial caliper that you can measure depth of the mainspring hole on both housings for comparison?
Jon
On closer checking the 17lb spring is just longer than a 18 and up. So I guess its not the housing its just the springs length.
DavidR- Admin
- Posts : 3032
Join date : 2011-06-10
Age : 70
Location : NRA:Expert, Georgia
Re: 1911 Main spring tuning
Ok I ran into something very similar when I was just changing mainsprings. The original spring was a quarter inch shorter than the replacement spring and after I looked at the original it appeared to have been cut so I cut the new spring to fit and so far it's working just fine. Do mainsprings come in different lengths ? or what I have done ?
Skid- Posts : 282
Join date : 2014-05-19
Age : 62
Location : Northern Lower Mi
Re: 1911 Main spring tuning
Different lengths and wire thicknesses .
james r chapman- Admin
- Posts : 6372
Join date : 2012-01-31
Age : 75
Location : HELL, Michigan
Re: 1911 Main spring tuning
So how do you know how to order a replacement spring and where ?
Skid- Posts : 282
Join date : 2014-05-19
Age : 62
Location : Northern Lower Mi
Re: 1911 Main spring tuning
Skid, Are you changing mainsprings in a Springfield with the ILS?
I order my mainsprings from Brownells.com
I order my mainsprings from Brownells.com
Rob Kovach- Admin
- Posts : 2692
Join date : 2011-06-14
Age : 51
Location : Brooklyn, WI
Re: 1911 Main spring tuning
Don't get to wrapped up over mainspring lengths. It's a small factor in the trigger job. It just basically does 2 things; ignition and keeping slide in battery during firing/recoil retarding. For a typical wadgun a 19# spring is sufficient. But so is a 18# or 20#. Sear engagement and sear spring have more effect on trigger pull. If i had a pistol with a sub standard barrel fit that came out of battery too soon I would use heavier mainspring to try to slow the slide down. As a matter of fact I recommend that on the RO because they come out of battery pretty fast with stock barrel.
Jon
Jon
Jon Eulette- Posts : 4399
Join date : 2013-04-15
Location : Southern Kalifornia
Re: 1911 Main spring tuning
Rob that's right but I replaced the mainspring housing all together and I bought the 20lb replacement spring from Brownells.
Jon thanks it is a RO that I'm working on and it's going to get a new barrel.
Jon thanks it is a RO that I'm working on and it's going to get a new barrel.
Skid- Posts : 282
Join date : 2014-05-19
Age : 62
Location : Northern Lower Mi
Re: 1911 Main spring tuning
Skid,
Just make sure you replace the ILS mainspring top cap with a GI version. The cap for the ILS is very much taller, and that accounts for the reason the mainspring is different.
Just make sure you replace the ILS mainspring top cap with a GI version. The cap for the ILS is very much taller, and that accounts for the reason the mainspring is different.
Rob Kovach- Admin
- Posts : 2692
Join date : 2011-06-14
Age : 51
Location : Brooklyn, WI
Re: 1911 Main spring tuning
Thanks Rob I'll do that.
Skid- Posts : 282
Join date : 2014-05-19
Age : 62
Location : Northern Lower Mi
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