Question about BM 806 D2

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Oct 28, 2000
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I've an older 806 D2. I've noticed that with repeated opening and closing, blade play developes. This is no surprise and I just tighten the pivot screw. I've recently noticed that blade play comes very quickly after opening closing. Quickly as in about 2 minutes of flicking after severe tightening. To give some idea, I tighten the pivot screw to a point where flicking the blade out requires a strong flick. However, after about two minutes of flicking, opening/ closing, the blade flicks open with a very light swing and the pivot screw needs to be turned again. Does anyone know if this is indicative of anything broken such as a damaged omega spring? Any suggestions as to what I may do to alleviate this? Any info is greatly appreciated
 
Doesn't sound like a spring thing. Sounds like your pivot screw is just coming loose. You could try the lightest variety of loc-tite and see how it does. Or send it back if you don't want to void the warranty.
 
This happens a lot in benchmade folders......try loctite etc...remember though that with torx screws, just a ton of pressure with your thumb and turning your hand can tighten them up in a bind.
 
Hateman said:
This is no surprise and I just tighten the pivot screw. I've recently noticed that blade play comes very quickly after opening closing. Quickly as in about 2 minutes of flicking after severe tightening.

I tighten the pivot screw to a point where flicking the blade out requires a strong flick. However, after about two minutes of flicking, opening/ closing, the blade flicks open with a very light swing and the pivot screw needs to be turned again.

Does anyone know if this is such as a damaged omega spring?

From your description, why do you think this may be related to the springs?
 
Thanks for the replies. I'll be getting the loctite and getting to work on the pivot screw.

Blop, the remark about the omega spring was purely a guess.
 
If you ever dare to look under the scales, you will find two extra large omega springs and stop worrying about them.

Instead of pushing the axis bar in position from behind, the 806 springs pull the bar because they are located around the pivot and fixed to the bar and the stop pin.

It is the strongest axis.
 
:rolleyes:
Blop said:
If you ever dare to look under the scales, you will find two extra large omega springs and stop worrying about them.

Who said I was worried about the springs? It was only a wild guess as to what was wrong with the pivot. Relax, it's only a knife. Such a brave person who dares to look under scales should have no problem doing that.
 
It absolutly wasn´t meant as an offend. Sorry, if you get it that way.

To dare to look under the scales was meant like this: ;)

No offend, sorry.
 
Artfully Martial said:
This happens a lot in benchmade folders......try loctite etc...remember though that with torx screws, just a ton of pressure with your thumb and turning your hand can tighten them up in a bind.

Where do you come up with this sh*t that you post? :rolleyes:
 
what a happy thread

Anyway, the blue loctite is my suggestion as well, but I just wanted to note that I bang my old 806 open and closed a lot without issue. It should be a terribly simple DIY fix, but you could send it to BM if it bothers you, I don't think it's a really common problem (haven't seen any other mentions of it, could be wrong)
 
I have this same issue with any folder that has an adjustable pivot after a few weeks of daily carry/use. This is especially true if I start tweaking the pivot tension to my likeing, if the factory applied loctite it's not as bad, but generally needs to be reapplied since I tend to adjust the pivot a few dozen times before I find the spot where it's "just right". Once it's set and re-loctited though it usually doesn't require adjusting more than once a year, and that's probably more a matter of my taste in pivot tension changing than anything.

Make absolutely sure you don't get the RED loctite, and I don't mean the color of the tube/package. It'll say "red-high strength" or some such on the bottle or package, this will basically lock your pivot up so tight you might hurt yourself getting it off without some kind of assistance(high temperature/soak in acetone for a while) Medium/Blue is perfect for pivots, but for very small screws I prefer light duty to avoid any possible stripping of the driver heads.

*edit* for best effectiveness I like to clean off the threads of both the male and female ends first. I use a toothpick or dental pick to remove most of the old loctite if present, then a q-tip soaked in alcohol threaded into the female end and usually just wipe the male end off with a soaked paper towel.
 
yoda4561,
Thanks for the post, you answered some other questions that were swirling around in my head about this.

I hope to try the loctite myself as I've taken apart only a couple of benchmades and I'd like to get to a point where I can do minor repairs myself; without sending things to BM.

hardheart,
I don't think this is common for BM's, either. I've used other BM's with no compassion (both size grips, two 710's, others) and have never had any problems with any of them. This was the first time something like this has happened and the first time I ever heard about it. As you and others suggest, I'll give the loctite a go.

Blop,
No problem, hopefully no hard feelings.

Now, let's everyone get back to the oh so yummy love fest of Bladeforums.

Hateman :D
 
Lil Timmy said:
Where do you come up with this sh*t that you post? :rolleyes:

???

The same happend with my 806. Just the 5000A didn´t showed this. As an effect i glue all screws lightly, not like the glue has to withstand a b+++attack. Just a little drop is enough.

Maybe it don´t has to happen but i am not surprised that it does. The screw is not fixed to end, so why shouldn´t it move?
 
I had the same problem... blue loctite was the solution.

"Dare to look under the scales"... full assembly and desaasembly of an axis lock and be an adventure the first time, in the "crawling on the rug trying to find that damn spring" sense of adventure.
 
I wondered last couple days about asking this or not but i have to...

It is the strongest axis.

Blop, How do you know that the spring position makes the one axis lock stronger then the other?

I would love to see some literature or other from BM saying this.

Not trying to start an arguement, just want your info.

WR
 
Blop said:
???

The same happend with my 806. Just the 5000A didn´t showed this. As an effect i glue all screws lightly, not like the glue has to withstand a b+++attack. Just a little drop is enough.

Maybe it don´t has to happen but i am not surprised that it does. The screw is not fixed to end, so why shouldn´t it move?

My comment was in regards to his advice on how to tighten the screw.
 
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