Update: I managed to get hold of another Solida Chainset in case my plans didn't work and I've used the 42 tooth ring as the outer and made a smaller inner ring out of a childrens 32 tooth chainset. A friend turned down the tooth thickness to suit a 3/32nd" chain and drilled a smaller BCD using...
Hi epic1400cs, I know this is a very old post but I have a very similar Mercier mixte and wanted to know if you've still got yours.
Mine went for its first ride after the rebuild yesterday and the gears are far too high for the lady riding it. I am thinking of removing the 52 tooth ring...