BFK Durability Testing - more updates

[Olegis]

This is one CRAZY thread

[Marrin]

She is out of town for 4 days.

Does this mean the thread will die once she gets home?

[dnslater]

Day 5.1 - Load bearing test


Couldnt really think of any real world merit to this one but thought running the watch over with my Honda Odyssey, which weighs around 4,200 lbs. Given the weight distribution each front tire is supporting around 1200 lbs.



Given the size of the contact patch the load on the watch is actually probably in the neighborhood of 75-100 psi given my quick math. Engineers may chime in with better calcs. I'm an Architect so I go with estimates and educated guesswork.





I placed the watch on the ground and drove slowly over it in both directions. This watch started life as a black BFK that has since been crudely brushed so the finish was not exactly refined to start this test.





Watch suffered a few new scuffs on the hardlex and the bottom of the lugs have some new gouges from being driven into the concrete. Bezel action is still as before.

[dnslater]

Day 5.2. - vibration testing

Next I decided to try strapping it to an orbital sander. The NATO allowed it to clamp easily to the face of the old Black & decker.




I ran for 1 minute. Second hand stuttered a few times while running but it came out fine. Still minus 6 seconds. When shaken the rotor still sounds intact.

​

[dnslater]

Day 5.3 Spin test



Next power tool to utilize is my drill press. I have a hole saw which allows the watch to be easily connected.




Strapped it on and gave it a 1 minute spin. No I'll effects. Boring.

[ky70]

This is officially my favorite thread ever.

[koiom]

How about an electrocution test?

[dnslater]

How about an electrocution test?

How do I do this safely without catching my house on fire, blowing a breaker or stopping my heart? The test administrator is not built to the same ISO standards as the subject.

[jason_recliner]

Nick this is a brilliant thread. Well done! The BFK is one of my favourite watches. Mine has been through a bit (2+ m drop onto tiles, nasty MTB crash) but nothing like this. It's great to see that it's still ticking.

This test is a little boring, but what aboout a series of drops from increasing heights onto concrete. An office stairwell would be perfect. I would like to know how many Gs it takes to crack the crystal (Mine has a small chip at the edge from the drop onto tiles).

[mikeynd]

I think the watch needs a little break now.I knew all of us BFK owner's were right when we said the watch is built like a tank.