tissot 27B-21 movement

[artbrisbane]

HI all, I've gone from being a lover of vintage watches to a tinkerer. I started on  Seiko 7S26 movement, disassembling and now reassembling.  I bought a tissot 27B-21 moment, dial ( not in great condition) and crystal very cheaply, thinking i would just use it to learn with, but it's very clean and a nice looking movement, so i wonder if anyone knows of options for using one of these movements as part of a project. obviously not to try to restore to an original Tissot watch, but to find a case and to build a watch from there. I'm very inexperienced with hands on stuff so any advice would be appreciated.

[rodabod]

Is the Tissot cal 27 actually a Lemania Cal 27? If so, it’s going to be much easier to work on than a Seiko. 

Lemania 27A:

[digginstony]

The problem will be alignment of the stem and depth of movement and to a lesser degree , diameter of movement for the replacement case. If the movement is too shallow adjustment can be made with a piece of sprung steel on the shoulder, where the dial sits within the case.
A far more practical solution is to replace the crystal. Remove the dial and measure and seek a generic dial from places such as ebay. The dial can be stuck to the movement with dial spots and is very straightforward, particularly if the watch has no complication

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[artbrisbane]

It says tissot & fils, it's similar but you can see the differences, most obviously in the balance wheel which has screws whcih I'm guessing allows for finer adjustments.

thanks for the advice digginstony,  if I understand correctly you're saying that if I replace the crystal and find a generic dial it will be easier to match to a case? I've probably got that completely wrong. cheers

[digginstony]

It says tissot & fils, it's similar but you can see the differences, most obviously in the balance wheel which has screws whcih I'm guessing allows for finer adjustments.
thanks for the advice digginstony,  if I understand correctly you're saying that if I replace the crystal and find a generic dial it will be easier to match to a case? I've probably got that completely wrong. cheers

No, use existing case. That way everything will line up. With a new crystal and dial and possibly hands, the watch should look pretty good

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[artbrisbane]

the problem is i don't have the case! I got the movement to play with and it came with the crystal and dial already in place only. the problem will be finding a case I guess. I have some information on the dimensions of the movement, but I would need gasket/rings I guess these would come with the case? the seiko has a rubber mount for the movment, would I have to find something similar to match?sorry to be vague but as I said, I'm not experienced.

[digginstony]

the problem is i don't have the case! I got the movement to play with and it came with the crystal and dial already in place only. the problem will be finding a case I guess. I have some information on the dimensions of the movement, but I would need gasket/rings I guess these would come with the case? the seiko has a rubber mount for the movment, would I have to find something similar to match?sorry to be vague but as I said, I'm not experienced.

Now I understand. Most case/movement combinations as advertised cater for modern watch architecture.
Probably your best bet, is to search sites such as ebay, typing in the watch caliber, in the hope something turns up, cased, that fits your movement.
You could buy job lots of old broken vintage watches in the hope a case might fit your movement? But the economics of such a project is questionable.

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[artbrisbane]

yes that makes sense, to try to find a complete watch with same calibre movement but not working , thanks again guys for advice, cheers

[plaverty]

Rodabod, I have never encountered previously a Lemania 27A movement that is so clearly a forerunner to the Tissot 27B.  Roland Ranfft does not associate the Tissot 27 movements with any Lemania movement.  Is it possible that the movement that you pictured was either originated by Tissot 4 years after Lemania joined SSIH, or at least the movement was used exclusively by Tissot?  I just have not seen the movement in other than a Tissot watch.

Thank you for commenting further if you can.

Paul

[jdm]

19 hours ago, plaverty said:

Rodabod, I have never encountered previously a Lemania 27A movement that is so clearly a forerunner to the Tissot 27B.  Roland Ranfft does not associate the Tissot 27 movements with any Lemania movement.  Is it possible that the movement that you pictured was either originated by Tissot 4 years after Lemania joined SSIH, or at least the movement was used exclusively by Tissot?  I just have not seen the movement in other than a Tissot watch.

This was and still is normal in the Swiss watch industry. Someone (sometime isn't even clear who) starts a design, or produces an ebauche which is then transferred, resold, reused, modified, supplied to unexpected third parties as long it makes economical sense. The modifications made can go from fitting a anti-shock that is actually an important innovation, to fitting screws on a flat spring balance to make it look like a free sprung, and of course changing shape, color and finishing of the bridges, in this case they went one step beyond, to fully expose the third wheel it was renounced to have an supper support (not that good technically). All in name of marketing, in order to claim uniqueness and -there you have it- in-house development.

BTW, we have a section here where most consider polite to introduce oneself as a new member.

Edited July 6, 2019 by jdm

[Nucejoe]

On 2/21/2018 at 6:07 AM, artbrisbane said:

HI all, I've gone from being a lover of vintage watches to a tinkerer. I started on  Seiko 7S26 movement, disassembling and now reassembling.  I bought a tissot 27B-21 moment, dial ( not in great condition) and crystal very cheaply, thinking i would just use it to learn with, but it's very clean and a nice looking movement, so i wonder if anyone knows of options for using one of these movements as part of a project. obviously not to try to restore to an original Tissot watch, but to find a case and to build a watch from there. I'm very inexperienced with hands on stuff so any advice would be appreciated.

Give dial OD, I have several cases in SS with matching crown and crystal.These used to house fhf70 which has indirect center second too.

If you like any of these, may be you consider getting me an escape wheel in return.