Rep Watch movements

[Ray 0]

Hi all,

Just wondering which rep movement has the smoothest sweeping second hand, I have a Breitling Chrono with a A7750 movement it's not bad but it certainly aint smooth!

[opus9 0]

well a 2836 is pretty damn good,but is not for chronos

regards

opus

[opus9 0]

i also have a self wind 7760 chrono and that is pretty awesome.....

[Ray 0]

Thanks for the input opus 9, reason for starting thread is, I am looking to order another rep soon and am looking for a better

movement than the A7750, mine is not only a little jerky but has developed a fault if it wasn't for the fault I would still be chuffed with the rep) it goes to a crawl when approaching midnight so I have to reset every day. Ha well

[greg_r 81]

Assuming the movement is in good condition, the only real variance in smoothness of sweep is going to be down to a: the beat rate of the movement (28,800 being the norm for high-beat @ 8 'ticks' per second - A7750s are available as both 28,800 and 21,600 - the latter being the older version) and b: the length of the second hand - the longer/heavier the second hand, the more noticeable the 'ticks' are going to be.

 

Note that if you want a mechanical watch with chronos, then the A7750/A7753 are pretty much the default in reps unless you're lucky enough to want a model that's available with the Sea Gull ST19 hand-wind chrono (aka "Lemania" or "copy venus") which is a rather more robust movement than the 7750.

 

With all but the cheapest 4813s (which are high-beat but rather 'jerky'), a high-beat movement is a high-beat movement. Assuming that it's in good order, there will be no difference in the smoothness of the sweep.

[David543 0]

Masterful response from Greg, this is normally one I bang on about!

 

As far as I am aware, no rep has a spead over 28,800 vph - 8 ticks per second. VERY few genuines do either as the engineering required to make a movement stable and long lasting is prettly hard and ETA / clones haven't done it. Only the El-Primo movement used by Zenith (and by Rolex before they produced their own Daytona movement) and Seiko in their Grant Seiko have such a high beat.

[JohnG 41]

Masterful response from Greg, this is normally one I bang on about!

 

As far as I am aware, no rep has a spead over 28,800 vph - 8 ticks per second. VERY few genuines do either as the engineering required to make a movement stable and long lasting is prettly hard and ETA / clones haven't done it. Only the El-Primo movement used by Zenith (and by Rolex before they produced their own Daytona movement) and Seiko in their Grant Seiko have such a high beat.

 

+!

 

Many reps, including many 7750's, like Greg said, have 28800 bph and VERY few gens have anything better than that. And the 21600 beat watches are still 6 beats per second, and though if you really look close you can see a little difference between that and the higher beat (8 bps), it is very hard to tell and anyone who claims (as I have seen a few do) that they can tell the difference from a few feet away are lying. Period. You have to get the thing right under your nose and have seen quite a few of both the 28800 and the 21600 beat movements to tell the difference.

[greg_r 81]

I'd add that if you're going to buy another A7750, buy it from Robert and have it pre-serviced. It costs a little extra but will pay dividends in terms of reliability and longevity.

[Ray 0]

Many thanks to everyone for their responses, it amazes me how much knowledge there is amongst members here, I take the point about the A7750 movement re it's quality of sweep

mine is in a Breitling chrono and is the 28800 version.

Have taken note Greg on having future watches serviced, thanks for the suggestion.