How effective is the Rolex Rotor ?

[CharlesN]

I have just done a full power reserve test on my watch (Explorer II with a 3285 movement).

This entailed fully winding my watch and then leaving it in the dial up orientation and largely untouched until I had to take a 5 position measurement once every 12 hours. The 5 position test was nothing to do with doing a full PR test but was convenient to do at the same time as it also required a full wind to start and then let fully wind down to stop.

My watch ran for 70 Hours 15 Mins and 24 Secs.

I am happy with that.

Rolex say the watch PR is APPROXIMATELY 70 hours for the movement.

I managed just a little over that.

But, Whilst doing the power reserve test I also took some Isochronism readings as mentioned above.

This entailed taking measurements every 12 hours and that entailed moving the watch between the 5 positions needed (CH, CB, 3H, 6H, 9H).

I estimate the rotor was rotated a total of 6 times during the entire PR test.

How much extra time would 6 rotations add onto the running time of my watch ?

[nickrb]

Well, a Wolf winder recommends a setting of 300 bi-directional turns per day. So this must mean 6 turns is, at most, recharging 1-2% of the power reserve.

Where is the data??

[Andad]

I'm not sure but it negates the PR result.

[CharlesN]

Originally Posted by nickrb

Well, a Wolf winder recommends a setting of 300 bi-directional turns per day. So this must mean 6 turns is, at most, recharging 1-2% of the power reserve.

Based on the 1% figure you mentioned ...
My PR of 70 Hours = 4200 Minutes.
1% of 4200 = 42 Mins.

My watch ran for an extra 15 minutes equaling approixinately 0.33%

Originally Posted by nickrb

Where is the data??

All of the data has been given to a good friend and colleague.
He is analysing it against other watches to see if there is a pattern anywhere etc.

I am sure he will present it when the time is right.

[CharlesN]

Originally Posted by Andad

I'm not sure but it negates the PR result.

There is possibly a 0.33% differential as increase in power from the 6 turns.

Although they are not complete turns so the figure may be far less.

The end result of the Power result is however not negated. It remains valid and just has a possible error value that is almost unmeasurable.
This can be seen also as every time a Power Reserve test if performed the results are slightly different both increase and decrease in reserves can be observed.

[Easy E]

Tables and graphs, Charles, or it didn’t happen.

[Devildog]

Originally Posted by CharlesN

I have just done a full power reserve test on my watch (Explorer II with a 3285 movement).

This entailed fully winding my watch and then leaving it in the dial up orientation and largely untouched until I had to take a 5 position measurement once every 12 hours. The 5 position test was nothing to do with doing a full PR test but was convenient to do at the same time as it also required a full wind to start and then let fully wind down to stop.

My watch ran for 70 Hours 15 Mins and 24 Secs.

I am happy with that.

Rolex say the watch PR is APPROXIMATELY 70 hours for the movement.

I managed just a little over that.

But, Whilst doing the power reserve test I also took some Isochronism readings as mentioned above.

This entailed taking measurements every 12 hours and that entailed moving the watch between the 5 positions needed (CH, CB, 3H, 6H, 9H).

I estimate the rotor was rotated a total of 6 times during the entire PR test.

How much extra time would 6 rotations add onto the running time of my watch ?

A much simpler procedure than calculating the percentages based on the wholly unscientific use of what a watch winder manufacturer's recommendation (seriously?) would be to another PR reserve test from a full wind dial up and not move the watch at all during that time.

Obviously you'd need to do a number of identical tests to obtain the mean PR from the tests.

But even one test would be better than trying to guesstimate how many rotor turns there were and what percentage of PR that represented.

[Andad]

How much extra time would 6 rotations add onto the running time of my watch ?

Originally Posted by CharlesN

There is possibly a 0.33% differential as increase in power from the 6 turns.

Although they are not complete turns so the figure may be far less.

The end result of the Power result is however not negated. It remains valid and just has a possible error value that is almost unmeasurable.
This can be seen also as every time a Power Reserve test if performed the results are slightly different both increase and decrease in reserves can be observed.

Why did you ask the question if you had a possible answer?

They might not have been complete turns.

The PR test remains valid.

The possible error value is unmeasurable.

Possibly a 0.33% differential.

The power reserve figure remains valid.

The PR results are different each time.

Where were you going with this Charles?

[Alexjb007]

Esta documentado en la información general del movimiento 3235, en 16 número de vueltas de la masa para 1 hora de reserva de marcha.