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Blade pitch is too high

Posted: Mon Apr 18, 2011 12:38 am
by singin46
Is there anything a novice like me can do to rest the main blade deeper in the knife?
Short of filing the down the tang of course. When I slip the screw driver in between the spring and blade, the blade rests correctly but the backspring does not. But when I take the screw driver out, the blade rests higher than it should be and the backspring rests too low in the liners. FYI, the main blade is also very loose when opened. C'mon experts!
This is not an expensive knife but one I was hoping to save. Also the only EZ I have in my collection.

Re: Blade pitch is too high

Posted: Mon Apr 18, 2011 1:58 am
by gary
Shim the back spring on the end pin, where your left thumb is, (second pic), from the back of the spring, slack and (hammer) down the main blade pin to tighten the blade. Remember I'm no expert, just trial and error, it works. Worn end of tang or spring even worn pin could be the cause.

Re: Blade pitch is too high

Posted: Mon Apr 18, 2011 2:05 am
by glennbad
It has been my experience that the steel on the Imperial blades tends to be softer than the springs, and the tang wears down from years of use. That is probably the reason for the loose-ness. Like gary said, I have seen a shim used.

Glenn

Re: Blade pitch is too high

Posted: Mon Apr 18, 2011 2:10 am
by gary
Try that screw driver from the other end, of the knife, ::woot:: and see what happens.

Re: Blade pitch is too high

Posted: Mon Apr 18, 2011 3:23 am
by knives-are-quiet
Does this type and brand of knife have an exposed end pin or does it go through the spring?

If not the knife will have to be dismantled and the spring at the pivot area will have to be punched on it's sides to raise that area of the spring "make the spring thicker at the pivot area". This will take up the slack and also raise the back of the spring to it's proper location.
This procedure can also fix a weak snap.
J W

Re: Blade pitch is too high

Posted: Mon Apr 18, 2011 3:42 am
by gary
If it goes through the spring, can you compress the spring at the front with a vise and spring wedge to get more tension, or just file the tang so it sits down? The kick.

Re: Blade pitch is too high

Posted: Mon Apr 18, 2011 4:02 am
by knives-are-quiet
It depends if the knife still has a good snap.
Then filing down the kick will lower the blade.
But watch your nail nick. you don't want to lose it behind the forward blade.
The compression you would need to change the springs shape would destroy the knife.
And if the knife has a weak or no snap filing down the kick could make things worse.
Sometimes changing out the pivot pin with a larger diameter one can fix this problem.

Wait till you get more answers to this post.
Hopefully someone else has an easier and less evasive procedure to fix your problem.

J W

Re: Blade pitch is too high

Posted: Mon Apr 18, 2011 4:52 am
by singin46
Well I can't thank you guys enough for responding. I went with the shim idea because this knife is too cheap to fool with it for too long. K-A-Q,because the knife is an EZ opener I wasn't too worried bout the nail nick. I appreciate your imput greatly because future projects will need this info to complete properly. ::tu:: ::tu::
Thank you Gary for all the help in answering all my stupid questions. ::handshake::

Re: Blade pitch is too high

Posted: Mon Apr 18, 2011 1:21 pm
by basser5
Perry.....that sure is a little beauty ::tu::

Tim

Re: Blade pitch is too high

Posted: Mon Apr 18, 2011 7:28 pm
by singin46
Thank ya Tim ::woot::

Re: Blade pitch is too high

Posted: Mon Apr 18, 2011 7:40 pm
by rangerbluedog
I agree w/ Tim - nice knife. I wonder why ALL knives aren't EZ openers.... They just make it so ..... well...EASY! :wink:

Re: Blade pitch is too high

Posted: Mon Apr 18, 2011 7:57 pm
by trey
Very nice knife. What did you use for a shim?
How did you drive in the shim?

Re: Blade pitch is too high

Posted: Mon Apr 18, 2011 7:57 pm
by singin46
Eggzactly Blue and this is my only EZ!

Re: Blade pitch is too high

Posted: Mon Apr 18, 2011 8:00 pm
by singin46
Hey Trey, I used a small piece of metal that I put in between the spring and the blade.
I installed it with a hammer, very carefully.

Re: Blade pitch is too high

Posted: Wed Apr 20, 2011 12:49 am
by knives-are-quiet
If this knife is going to be a user, I would think that type of quick fix won't last that long and the shim will eventually work it's way out plus make the pivot area ware out faster.
If the knife is a show piece then that type of fix would be perfect.
If you are going to use the knife, let us know how it works out for you.
I can always use a new trick to fix a knife quicker and without breaking down the knife.

J W

Re: Blade pitch is too high

Posted: Wed Apr 20, 2011 4:52 am
by singin46
Right, just a display piece.