I have bought a timegrapher to check my watches and wonder if Archer or other competent people know what figure to set on the timegrapher when testing a cal. 8500 (default is 52°)? With the default setting the amplitude reds at 6 positions with watch 1 (see signature) between 320 and 345 degrees, with the Master Co-Axial 8500 watch 1 between 300 and 310 degrees and with Master Co-Axial watch 2 between 315 and 345 degrees.

In another thread I've read that for a Planet Ocean the lift is 38°, but this was a 2500 co-axial movement and not an 8500 as in my ATs. Can I use a value of 38 degrees for 8500 movements?

All measurements fully wound-up movements.

 

Hey Champ,

What signature? Which watches?

 

Omega Aqua Terra bicolor you see left of the text. Sorry for the wrong word, I'm a foreigner.

 

Ah, the pic! Commonly referred to as Avatar around here.

I'm sure someone more technical than me will be along in a bit.

 

This says 38 degrees.

link

 

Many thanks.

 

Just to make sure.... Does your Timegrapher support coaxial movements at all?
Coaxial movements have a different escapement, and hence a regular Timegrapher (such as my own) would not report correct figures.

 

Yes it does.

 

Cool, must have updated firmware compared to mine. What is the model designation on it?

 

It's a cheap chinese Weishi (ha, ha) 1900 bought on ebay for ca. 310 $ including postage.

 

They are great help. As long as you do not go staring yourself blind on the figures. It is easy getting a bit lost when one does not have full watchmaker training. Member Archer wrote some very good comments on this in a thread some time back.
I have the older model 1000. Same maker.

 

As noted the lift angle is 38 degrees, but I very much doubt the machine has a special program to properly analyze co-axial escapements.

The other readings for timing and beat error will be correct, but the amplitude numbers won't be.

Cheers, Al

 

Thanks Al, of course it's a cheap device and in their advertising the company said it's for co-axial movements as well. OK, if the readings are correct except amplitude then I'm not too concerned.

The daily error for my 3 watches are (dial up/dial down/crown up/crown down/12 up/12 down):

AT bicolor: 0,6/2,2/-1,2/-1,4/-3/1,2. On the wrist for 16 hours and dial up for 8 hours: - 1 sec/day.
AT Master blue dial: 6,7/4,9/7,0/4,6/5,4/5,4. On the wrist for 16 hours and dial up for 8 hours: +3 sec/day.
AT Master Ryders Cup: 6,4/8,7/9,0/4,3/6,0/7,8. On the wrist for 16 hours and dial up for 8 hours: +5 sec/day.

 

Of course they all say they can be used for co-axial, because aside from amplitude they can. That doesn't mean that they have the special programming needed to analyze amplitude - you would have to change a setting to a different program on the unit if that were the case...

 

Thans again, Al! I understand your point.

 

I just bought an Ace Timer Time Grapher myself and was wondering two things. 1) Lift angle for the Deep Black? 2) What is the USB port in back for? (First post from me, by the way.)