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Vintage Heuer Discussion Forum
The place for discussing 1930-1985 Heuer wristwatches, chronographs and dash-mounted timepieces. Online since May 2003. | |||||||
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Hello Tom,
The choice of materials is not inconsequential to the design of the movement and just changing out plastic parts for metal parts is probably not a good idea. Elements of the construction of the individual components (riveted vs. snapped together vs. attached with a screw) as well as how they interact together are likely optimized specifically for the material they're made out of and might not work as well if they even work at all if you made the same ones out of brass or steel. I remember reading about IWC thinking about upgrading the 7750 by adding a jewel to the clutch for the tilting pinion at one point and then finding out that it didn't work as well and giving up on the idea.
As an aside, I understand from two different watchmakers I reached out to about this movement that Swatch and Tissot are both using it now with a different caliber designation and a plastic pallet fork (and presumably some other small modifcations). FYI.
_john
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