Nitecore D10 failure

I've had my Nitecore D10 for about a month now and have loved it so much it has become my EDC. However, I twisted the head and it broke off!

I've only had it for a short time I hope that Nitecore will replace it under warranty as I think it should be a bit tougher than it is! It's broken where the knurling on the head meets the smooth section and the aluminium is very thin and I can only assume this is a manufacturing fault on my particular flashlight.

A D10?? I have one of those.

I thought this was only a problem with EX10's!!!

Is yours a GDP or Cree?

The same thing happened to a couple of people with Ex10s.

I believe the early production lights they went a bit thin around the threads, supposedly the later lights are a little thicker there.

I think 4Sevens has repaired/replaced the lights that have failed so far.

I've seen the EX10 break on the battery tube but haven't seen a Nitecore break at the head! :thumbsdow That metal is so t-h-i-n!

You said you haven't had it long. Let us know the serial number to see if it was one of the early run that had this problem. If it is a higher serial number than we may have a bigger problem than originally thought.

jr/

Thanks for the quick replies guys, Its a GDP and serial number is 74. I bought it from Nitecore UK

That's definately one of the early batch. They say the later batches don't have this problem. David will replace no worries.

jr/

It seems they went too deep on the knurling undercuts.

Threads this thin would be a manufacturability issue. I'm sure they had fallout in their production line when concentricity wasn't perfect. They should have fixed this early.

Mine doesn't have a S/N, what does that mean?

Again Jimmy1970, thanks for the quick reply and good news.

Cheers!

hey EngrPaul

the serial number is on your warranty card... it's not on the light like others..

KraZy

krazy89 said:

hey EngrPaul

the serial number is on your warranty card... it's not on the light like others..

KraZy

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Ah, thanks. I'm 01292. Hopefully that's good news.

well.. that seems to be a later run... and to be honest... there hasn't been that many cases of it happening... so it's really not a big deal... IMO...

on top of that... 4-7's is really good with warranty issues (so i've heard)...

KraZy

I have ex10 #60, ive given it hell with no problems and my bud bought one the same day neither of ours have had issues

Just looked at both of mine and you can tell by the way it's labeled that's one of the new run. Bummer!

This is a bit scary. I hope this is not a trend. Maybe the 7000 series alloy isn't the best material choice for such a thin walls .

Was all of the broken D10s/EX10s used as a twisty?.

I have nothing bad to say about my Nitecore lights. Hope it'll stay that way.

It's a great to see that Edgetac stands behind their products. :twothumbs

EngrPaul:
Shame on you!. We all should have atleast two backups all the time
Nice avatar, VIITEK YO! rocker arms . Maybe from H22A?

But all tools break, look at surefire, one of the most revered companys out there, there are thread about broken M6s broken 6Ps, broken E2es, broken titians...broken L-mini, broken arc AAA's broken p2ds, broken lf5sts....all tools break ALL of em just a matter of time

EngrPaul said:

All lights may break, but this has become a repeat defect with three different unique body parts in the D10/EX10 series.

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3? I am only aware of 2 unique body parts(which exhibited such a failure).
It would be nice to know the total number of each model that are in circulation, my guess would be that the actual failure rate is low. And I know my 3-EX10's and 1-D10 have no such defects and will be taken care of if any defect should arise.

Youfoundnemo said:

But all tools break, look at surefire, one of the most revered companys out there, there are thread about broken M6s broken 6Ps, broken E2es, broken titians...broken L-mini, broken arc AAA's broken p2ds, broken lf5sts....all tools break ALL of em just a matter of time

Click to expand...

This is sorta a design issue thou, they should've tested the shear strength of aluminum at that thickness, or thiness rather, and find out it's not enough.

One is NONE and two is ONE!

Yes it would hoover bad to have this happen, but then I'd just go for my back up!

Nitecore is stand up! Good for them!

Beamhead said:

3? I am only aware of 2 unique body parts.

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#1 EX10 body component
#2 EX10 bezel
#3 D10 body component (different than #1)

jzmtl said:

This is sorta a design issue thou, they should've tested the shear strength of aluminum at that thickness, or thiness rather, and find out it's not enough.

Click to expand...

Yes and that's my point as well. It doesn't matter very much to me how well a product is supported after the fact if it has design elements that are predisposed to failure.

Imagine designing the D10/EX10 head in a parametric solid modeling program like SolidWorks or AutoDesk Inventor. You make the sketch, and before you go to revolve it to make the part, you can plainly see that section and how thin it is. I suppose if the part was revolved as part of a thicker design and then thinned by a cut extrusion, then that section might have escaped scrutiny at that stage.

But still, that section is too thin.