Sub Date 3235 Movement Knock and Slow

[saxo3]

Originally Posted by dannyp

Mustn’t we account for the additional shock absorption presumably provided by the flexible pillow, assuming the Watch was fastened around it and dropped bottom-first?

Yes, this will certainly help and I mentioned that in my last sentence "The damping provided by the watch box will help to increase x and therefore reduce the impact consequence". Maybe that was not clear enough.

[csaltphoto]

Originally Posted by saxo3

You had asked "Has anyone calculated the G's of say a 150gram object falling a meter and stopping suddenly?" and I calculated the numbers for you. I thought one could extrapolate numbers from 6 inch to 1 meter.

Falling from 1 m height, the same watch will see a negative acceleration of about -443 g if it comes to rest on a floor in 0.01 s. I do not know how long this stopping time really is, but 0.01 s seems reasonable for a hard bathroom floor; a soft carpet is certainly an advantage because you have more damping, the deceleration takes more time, and the forces are smaller. In good approximation one can neglect the air friction for this dropping watch, which will slightly reduce its velocity.

The potential damage to the watch I cannot calculate since it depends on many parameters, e.g., the material properties, the impact angle, does it drop onto the bracelet or the crown or the glass?

I hope that answers your question?

Thank you!

So that is considerably less than the 5000G test that Rolex claims as a benchmark.

[saxo3]

Originally Posted by csaltphoto

Thank you!

So that is considerably less than the 5000G test that Rolex claims as a benchmark.

Yes and No.

One needs to look into the details of this Rolex crash test, from rolex.com:

"This exclusive shock-testing equipment submits the watch to an impact equivalent to 5,000 G."

Impact equivalent! To be clarified what that means exactly. Maybe a part of the watch becomes accelerated for a very short time to 5000 g?

I think that is not at all comparable with a watch hitting a bathroom floor.

[saxo3]

"This exclusive shock-testing equipment submits the watch to an impact equivalent to 5,000 G."

The matching Rolex video "watchmaking-tested-to-extremes_belier"

[CharlesN]

Originally Posted by blatchcorn

A while ago I dropped my rolex box with the sub inside.

I do think we need to know exactly which box your watch was in.

Are we talking about the green fancy end user box and if so was it in its carboard proection outer wrapping(s).

Or .... Was it perhaps in what some people call it's "Coffin" - Thats the one with polystyrene in it giving the watch quite a bit of protection. Thats possibly why Rolex ship their new watches and some serviced watches in the "coffins".

This is what a "Coffin" looks like ...

[burnthesehills]

Originally Posted by CharlesN

I do think we need to know exactly which box your watch was in.

Are we talking about the green fancy end user box and if so was it in its carboard proection outer wrapping(s).

Or .... Was it perhaps in what some people call it's "Coffin" - Thats the one with polystyrene in it giving the watch quite a bit of protection. Thats possibly why Rolex ship their new watches and some serviced watches in the "coffins".

The “coffins” are rarely given out by AD’s anymore.

[EEpro]

Originally Posted by burnthesehills

The “coffins” are rarely given out by AD’s anymore.

It's funny because sourcing one and an OEM bezel guard on eBay is a cheap ordeal. I don't know why the AD thinks this is preventing something.

[CharlesN]

Originally Posted by burnthesehills

The “coffins” are rarely given out by AD’s anymore.

I agree But the OP has had his watch a little while and may have managed to get one from his AD.

I managed, so others can also.