Problem with bolt hold open on 1918 DMW - Page 2

Comanche1952 · 11-01-2016, 02:30 PM

some = son. Can't type well

DonVoigt · 11-01-2016, 02:55 PM

Quote:

Originally Posted by Eugen

The spring was "too heavy" so "a little polishing" fixed it? I need help in understanding what you did to the spring and what was corrected. Could you elaborate? By heavy do you mean too large or strong? How did you polish it, how much and with what?

He made it "thinner" = less spring tension.

gvt1911 · 11-01-2016, 04:33 PM

The Sarco replacements are about .020 - 019 Thick ...Original springs are in the neighborhood of .016 - .017 thick...I used a Dremel with an abrasive rubber wheel and went longways taking it down to .016 without over heating the spring...Held unit with a fine pair of needle nose pliers while doing it...Since the Sarco springs are stamped out using a die, they will have a burr all round which needed to be removed also...The object was to get it down and make it thinner as Don suggested... Making the spring thinner around "hook" area also helped with installing it in the HO slot as the original thickness would not allow it to "go"in the slot...

kurusu · 11-01-2016, 04:41 PM

Quote:

Originally Posted by Comanche1952

some = son. Can't type well

And maybe you can. But autocorrect plays tricks on you.

Caferacer · 11-11-2016, 10:06 PM

I just picked up a hold open spring from sarco, as it was the last part l needed for my project, and am having the same issue, l wasn't sure if it was the spring or mag causing it, after reading this l think it may be both, l will try doing as you suggested, if a new Mec Gar mag doesn't fix it, thanks

11-11-2016, 10:06 PM	#25
Caferacer User Join Date: Mar 2016 Posts: 60 Thanks: 96 Thanked 25 Times in 13 Posts	I just picked up a hold open spring from sarco, as it was the last part l needed for my project, and am having the same issue, l wasn't sure if it was the spring or mag causing it, after reading this l think it may be both, l will try doing as you suggested, if a new Mec Gar mag doesn't fix it, thanks __________________ Those who would trade liberty for a false sense of security deserve neither

11-01-2016, 02:30 PM	#21
Comanche1952 User Join Date: Oct 2016 Posts: 10 Thanks: 0 Thanked 8 Times in 4 Posts	some = son. Can't type well

11-01-2016, 04:33 PM	#23
gvt1911 User Join Date: Sep 2016 Location: Mountains of SW Va. Posts: 59 Thanks: 59 Thanked 13 Times in 8 Posts	The Sarco replacements are about .020 - 019 Thick ...Original springs are in the neighborhood of .016 - .017 thick...I used a Dremel with an abrasive rubber wheel and went longways taking it down to .016 without over heating the spring...Held unit with a fine pair of needle nose pliers while doing it...Since the Sarco springs are stamped out using a die, they will have a burr all round which needed to be removed also...The object was to get it down and make it thinner as Don suggested... Making the spring thinner around "hook" area also helped with installing it in the HO slot as the original thickness would not allow it to "go"in the slot...