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Swapping an A2824/2836 for Precisionist movement

bigplayer

Getting To Know The Place
23/5/17
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I am coming to the true watch geniuses here who know and understand the internals of automatic and quartz watches. I wish I did. We all know the A2823/2836 is an Asian automatic movement which has been known to be pretty reliable and beating at 28k bph. But at the end of the day it still less than a 3 day power reserve , accuracy of 5 seconds a day, which is about 30 minutes a year, then you have to worry about getting it cleaned, maintained ect.

The Precisionist is a Bulova proprietary movement which beats at 58k BPH (yes you read that right, smoother sweeping then the spring drive Seiko) but is a battery driven quarts. Accurate to 11 seconds a year, and supposedly the battery life lasts 2 years. For me personally, and It seemed like a ton of people as well on the forum according to a poll I had a few weeks ago https://forum.replica-watch.info/th...tz-if-they-had-a-sweeping-second-hand.380138/, having a smooth sweeping quartz is something that interests us.

So, without knowing anything about the internals of a watch, here is the big question:

Is it possible to swap out the an A2823/2836 for a precisionist movement? Will all the dials, hands, date wheels, fit? What are the possible hick ups, and solutions to those?
 

Hor-Fan

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The short answer is "no".
I'm unfamiliar with the specs of the Bulova movement, but I'm willing to wager that the hands,dial,and DW would not interchange and no doubt the crown heights would not match.
But, perhaps a very talented watchsmith could do the deed[emoji57]


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bigplayer

Getting To Know The Place
23/5/17
78
9
8
The short answer is "no".
I'm unfamiliar with the specs of the Bulova movement, but I'm willing to wager that the hands,dial,and DW would not interchange and no doubt the crown heights would not match.
But, perhaps a very talented watchsmith could do the deed[emoji57]


Sent from my iPhone using RWI

okay, good information, so now what are some possible ways to fix these problems? Nothing will be a perfect easy swap, but what can be done to adjust it to make them all fit?
 

Hor-Fan

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okay, good information, so now what are some possible ways to fix these problems? Nothing will be a perfect easy swap, but what can be done to adjust it to make them all fit?

First step is doing the homework. Find the specs of the Bulova movt: ligne,hand sizes, crown height, etc. and compare with the movt you want to replace. Note that 2824 and 2836 share hand size and dial position but have different thickness and crown heights.


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Ko67

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The bulova precisionist is the marketing name for the citizen p102, a very good 8j quartz mvt with a high energy crystal oscillator and a constant sweep. The size of the movement itself is quite small, but the frame and holder take it to about 12 ligne. This is q nig bigger than the 11.5 eta 28xx. the stem height will not match 28xx or miyota movements . The hand sizes are standard for quartz mvts. Eta hand and date wheel will not fit.


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bigplayer

Getting To Know The Place
23/5/17
78
9
8
The bulova precisionist is the marketing name for the citizen p102, a very good 8j quartz mvt with a high energy crystal oscillator and a constant sweep. The size of the movement itself is quite small, but the frame and holder take it to about 12 ligne. This is q nig bigger than the 11.5 eta 28xx. the stem height will not match 28xx or miyota movements . The hand sizes are standard for quartz mvts. Eta hand and date wheel will not fit.


Sent from my iPad using RWI

you know approximately 525x more than I do about this, but your making it seem like it is impossible due to the demensions. Is it in fact impossible to do, or are there ways you can adjust the frame, date wheel or anything for it to fix?