Rolexman

Just 2 weeks ago I tried to buy a Navi SS with Andrew and upon receiving QC pics I noticed it had the 'regular' Navi case back. After emailing him my observation he contacted the factory which told him the SS case back is out of production since 2 years..... So I changed my order. Apparently these Navi SS are out of production, or at least the case back is.

100% correct.

4m per hour can't be regulated with that arm. Something else is wrong. How does the balance swing look.. long swings or fast short swings. Post a vid if you can.

You changed the crown?.... looks thinner. IMO kinda weird looking. The gap never bothered me so I can't understand all the fuss about it. Adding gaskets and other modifications will eventually influence water tightness in a negative way. I WPed my 177 to 5 bar in a original state without a problem

Waiting since 16th december 2010!!!!!!!!!!!!!!!!!

Didn't get mine either... Ordered the day after it came out. Got shipped the 16th.

thanks great info!

Rep off course

I stand corrected. You guys are right about the flaws..... but it's such a damn cool and versatile watch to wear

Thanks, good info! The more posts I read the more I'm convinced the 177 is the best choice.

Update: I enountered two things that caused some problems. A balance cap leaked oil which contaminated the hair spring and thus making the coils stick. On the other movement it was the end-shake... The balance cocks could not be screwed down propperly because the balance would stop (ergo to much pressure on the staff. So I made a small 'pics ear' and voila. Both amplitude en timing problems solved! I still didn't figure out the whole isochronisme, amplitude and rate relation and how they interact..

We all want a 'perfect' rep and than we just feel like luming the hands red!?....IMO rather confliting

Photo's uploaded again. Wrist shot:

Would like to know too!

duh

1 and 2 both not true for the 2010 version. Gen has gloss dial and higher crystal hight than rep. I own the rep and I must say it is pretty damn accurate! Besides that I can't really tell what should be wrong with the shape of the case...

He'll probably just fasten the screws

Sharp eye!

Thanks very much! Great to hear your observations and motivation. Helps with making a decision!

My question stands. See #12

First of all thanks for sharing! Based on what would you say makes the 177 more gen-like? Judging form the pics I would say the 111 is the better choise. It has a better finished movement (gen like côtes, engraved OP, and right dagger) beter crown/ tube etc...

To hell with the 'Horlogists'... home-taught rules Checked the regulator pins and they are fine. Just some nice touch and release of the hair spring. Looked in to the whole isochronisme and per definition it would mean that no matter what amplitude rating I would get, it will or should not affect the rate... So if amplitude does not effect the rate what does? The lenght of the hair spring! And this is only altered by the regulator. So back to square one These technical things just grind through my mind the entire day. I will find the answer eventually

Beat error is perfect 0.1 and 0.3. Unfortunately no back up Vibrograph.. I'm on my own as no watchmaker in my neighbourhood likes home-taught watchmakers. The snobs! I do however was under the impression that crown down leads to a higher beat-rate (more friction on the balance staff ergo lower amplitude). At least all my 2836 movements act this way.. Will check it out tomorrow. Thanks for chiming in Zig. Much appreciated!

Cool thread with a lot of usefull stuff!

I'm having some problems with my vibrograph (MTG) lately.... or it could be the watches I'm measuring? What happens is (in this case both ETA 2892 and a 2671) E.G. -In the dial up position the amplitude is say 270 and the rate is +20 seconds fast -In the crown down position the amplitude drops say to 255 (-15 degrees) but the rate also decreases to + 5 seconds fast I can't find the logic. Lower amplitude means shorter balance swings which should lead to a higher rate?! No? So either there's is something I'm missing or my MTG has to be recalibrated? Would love to here some thoughts!