• Welcome to the DeeperBlue.com Forums, the largest online community dedicated to Freediving, Scuba Diving and Spearfishing. To gain full access to the DeeperBlue.com Forums you must register for a free account. As a registered member you will be able to:

    • Join over 44,280+ fellow diving enthusiasts from around the world on this forum
    • Participate in and browse from over 516,210+ posts.
    • Communicate privately with other divers from around the world.
    • Post your own photos or view from 7,441+ user submitted images.
    • All this and much more...

    You can gain access to all this absolutely free when you register for an account, so sign up today!

HELP- 90cm Mamba won't fire?!

Thread Status: Hello , There was no answer in this thread for more than 60 days.
It can take a long time to get an up-to-date response or contact with relevant users.

Janner

New Member
Mar 28, 2006
152
45
0
Hiya, i recently bought my first pneumatic gun a slightly used 90cm maorisub mamba. I have been getting on fine with the gun (bar aiming with it) till today. When i pull the trigger the line releases but the shaft doesn't leave the barrel. I have to physically hit the barrel with my other hand to get the shaft to leave the barrel. Its almost as if the trigger mechanism isn't working properly?

Any ideas what may be causing this problem, before i start taking things apart?!

Could i have bent the spear whilst loading?! it doesn't look bent to me, but then again im guessing it would only have to have a slight bend in the spear for it to mess things up. And i am not exactly fluid at loading pneumatics really as this is my first one.

Any response/ advice is greatly appreciated. I need to get this sorted asap so i can get back in the water

Cheers Ian
 
turn the gun upside down, so you have a clear view at the plastic trigger guard. you should see alittle hole in the guard just before the handle and a little screw inside. take a small screwdriver and make 2-3 clockwise turns. that should make your trigger more sensitive i.e. release the spear sooner.

check for proper trigger sensitivity by firing da gun in the water.
 
Petar_dj thanks for the advice. I managed to find an allen key and have just put 3 turns on it. Just about to leave and go for a dive now so fingers crossed!!

Cheers Ian
 
glad to be of assistance!!

with the proper amount of turns you can precisely set the trigger to "grab" when preffered. but watch out not to make it too sensitive because that could make the spear fly out without pressing the trigger:blackeye
 
You must log in or register to reply here.
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…