Jump to content


Photo
- - - - -

Sa Firing Problems


  • Please log in to reply
14 replies to this topic

#1 Darth_Kitten

Darth_Kitten

    Long Time Member

  • Regular Group
  • 24 posts
  • Gender:Male
  • Location:St. Louis, MO

Posted 03 May 2005 - 07:36 PM

Hello all,
I would like to poll your collective expertise and see if you guys can help me out on this one.
I have a Kahr SA thompson. I've made the following mods to the weapon;
Short barrel, parkerized, and installed modified mag catch to accomodate FA mags.
I also purchased one of Dave Jankowski's spring kits for it.
Here is my problem; when I have the lighter spring set and buffer in, the weapon double and triple fires sometimes when I pull the trigger.
It does not happen every time I pull the trigger.
If I put the heavier springs in the weapon functions fine.
What is happening (or not happening) to cause this type of malfunction. I've tried to think it through, and can not come up with a plausible explanation as to why it's happening. Since everyone else that has purchased Dave's kit has given it glowing reviews, I don't want to place blame on the kit.
Thanking you for your help in advance,
Mark
  • 0

#2 JimFromFL

JimFromFL

    Long Time RKI Member

  • Regular Group
  • 1877 posts
  • Gender:Male
  • Location:Florida

Posted 03 May 2005 - 07:49 PM

So, your complaining that your Semi-auto fires full-atuo!??!?! tongue.gif

Don't worry about it.... enjoy it. cool.gif
  • 0

#3 Darth_Kitten

Darth_Kitten

    Long Time Member

  • Regular Group
  • 24 posts
  • Gender:Male
  • Location:St. Louis, MO

Posted 03 May 2005 - 08:34 PM

Yeah, I know..... what is this world coming to.......
  • 0

#4 Motorcar

Motorcar

    Long Time RKI Member

  • Board Benefactor
  • 621 posts
  • Gender:Male

Posted 03 May 2005 - 09:14 PM

WOW! I'll be gettin' one of those kits pronto! biggrin.gif
  • 0

#5 PK.

PK.

    Technical Expert

  • Board Benefactor
  • 1567 posts
  • Gender:Male
  • Location:CO, USA
  • Interests:Full time gunsmith who loves Thompsons, 35+ years experience.

Posted 03 May 2005 - 10:09 PM

Remove the buffer and try it again
  • 0

#6 Darth_Kitten

Darth_Kitten

    Long Time Member

  • Regular Group
  • 24 posts
  • Gender:Male
  • Location:St. Louis, MO

Posted 03 May 2005 - 10:32 PM

PK,
Thanks for the advice. This means I have to go back to the range again, darn! There goes another 200 rounds.....................
Mark
  • 0

#7 Ron A

Ron A

    Long Time RKI Member

  • Regular Group
  • 641 posts
  • Gender:Male
  • Location:Helena, Montana
  • Interests:Collector of Thompson guns & items<br>Colt single actions<br>Native American items - pre 1900

Posted 03 May 2005 - 11:46 PM

With the buffer in the gun the bolt is not going back all the way. If it works without the buffer the question is - do you want the receiver battered as there is no buffer as the bolt will be going back faster and harder - just a guess!
Let us know.
  • 0

#8 bigred

bigred

    Long Time Member

  • Regular Group
  • 62 posts
  • Location:Tonkawa, Oklahoma
  • Interests:Civil War and WWII Reenacting, All areas of History, Computers, Firearms.

Posted 04 May 2005 - 02:01 AM

hmmm I wonder if I could get it to do that with blanks.... huh.gif dry.gif blink.gif
Jaron
  • 0

#9 gijive

gijive

    Respected Member

  • Board Benefactor
  • 2415 posts
  • Gender:Male
  • Location:Illinois
  • Interests:Thompson SMG, WWII, Firearms in general.

Posted 04 May 2005 - 07:38 AM

QUOTE (bigred @ May 4 2005, 02:01 AM)
hmmm I wonder if I could get it to do that with blanks.... 
Jaron

Jaron,

Not without a modified barrel with a restrictor (blank adapter) in it.
  • 0

#10 brian

brian

    Regular Member

  • Regular Group
  • 345 posts
  • Gender:Male
  • Location:lebanon,Pa

Posted 04 May 2005 - 04:12 PM

just hold your hand over the end of the barrel.............
  • 0

#11 bigred

bigred

    Long Time Member

  • Regular Group
  • 62 posts
  • Location:Tonkawa, Oklahoma
  • Interests:Civil War and WWII Reenacting, All areas of History, Computers, Firearms.

Posted 04 May 2005 - 04:49 PM

You mean mud won't do the trick!?! biggrin.gif tongue.gif
  • 0

#12 Zamm

Zamm

    Respected Member & Artist

  • Regular Group
  • 831 posts
  • Gender:Male
  • Location:Long Island, New York
  • Interests:Thompsons, and all their goodies!<br>Obsolete Victorian Photomechanical processes,<br>Etching, Engraving and all Printmaking,<br>Entomology, specializing in Coleoptera,<br>Arachnology, specializing in Theraphosidae.

Posted 04 May 2005 - 07:02 PM

Brain!

Go to the corner! That's dangerous info which might be taken seriously. ohmy.gif

When firing blanks you should restrict the gases only by stuffing a rock in the end of the barrel!

I'm suprised at you... laugh.gif
____________________________________________________________

:disclaimer: never do anything like the above, just a joke folks...........
____________________________________________________________

Z
  • 0

#13 Sgt

Sgt

    Long Time RKI Member

  • Board Benefactor
  • 2047 posts
  • Gender:Male
  • Location:Eastern TN
  • Interests:Militaria, Chess, Tools, Sherlock Holmes, Printmaking, UFOs, Ghosts, Electronics, Comic Books, Long walks in the rain, with my Savage 1928a1. (just kidding on the last one; it doesn't have to be raining) -- Ralph

Posted 04 May 2005 - 07:06 PM

Zamm--
You had me going there for a minute! LOL!
  • 0

#14 Zamm

Zamm

    Respected Member & Artist

  • Regular Group
  • 831 posts
  • Gender:Male
  • Location:Long Island, New York
  • Interests:Thompsons, and all their goodies!<br>Obsolete Victorian Photomechanical processes,<br>Etching, Engraving and all Printmaking,<br>Entomology, specializing in Coleoptera,<br>Arachnology, specializing in Theraphosidae.

Posted 04 May 2005 - 07:15 PM

Hey Sgt!
I'm gonna get myself in trouble one day biggrin.gif
Z
  • 0

#15 Darth_Kitten

Darth_Kitten

    Long Time Member

  • Regular Group
  • 24 posts
  • Gender:Male
  • Location:St. Louis, MO

Posted 04 May 2005 - 08:52 PM

help, my thread's been hijacked!!!
  • 0