Jonny69
Senior Retro Guru
Not a lot of progress since the last update. I got a set of early Mafac cantis which I'm 99% sure will fit on the old studs and they've got all their hardware with them. I'll use the original René Herse ones at the front, but that's the missing back ones sorted for now. I've also just committed to an early 49D chainset. These things aren't cheap but it's got 48 and 28 rings so it will look like the originals did.
So as I understand this, the early 49D sets had Stronglight Depose in the oval logo while the later ones had Stronglight Marque Deposee. On the back of the cranks, earlier ones were plain while the later ones had the size stamped on them. My cranks should be the earlier ones. Earlier chainrings had a 122bcd for the inner ring while later ones had an 86bcd to accommodate a smaller triple inner. I think mine have TA chainrings with the later, smaller bcd, but they look like the earlier 49D chainrings rather than the later star shaped ones. But as long as they polish up, that's better for me because I want to maintain the 20-tooth jump that the original René Herse chainset had.
Early 49D: https://velobase.com/ViewComponent.aspx?ID=F9B6EA13-202E-4616-8C78-720A5CB39FBC&Enum=115&AbsPos=26
Later 49D: https://velobase.com/ViewComponent.aspx?ID=201AC3DA-4C28-4B72-903E-623584E07D7B&Enum=115&AbsPos=27
So fingers crossed the threads and tapers are all ok when they turn up.
So as I understand this, the early 49D sets had Stronglight Depose in the oval logo while the later ones had Stronglight Marque Deposee. On the back of the cranks, earlier ones were plain while the later ones had the size stamped on them. My cranks should be the earlier ones. Earlier chainrings had a 122bcd for the inner ring while later ones had an 86bcd to accommodate a smaller triple inner. I think mine have TA chainrings with the later, smaller bcd, but they look like the earlier 49D chainrings rather than the later star shaped ones. But as long as they polish up, that's better for me because I want to maintain the 20-tooth jump that the original René Herse chainset had.
Early 49D: https://velobase.com/ViewComponent.aspx?ID=F9B6EA13-202E-4616-8C78-720A5CB39FBC&Enum=115&AbsPos=26
Later 49D: https://velobase.com/ViewComponent.aspx?ID=201AC3DA-4C28-4B72-903E-623584E07D7B&Enum=115&AbsPos=27
So fingers crossed the threads and tapers are all ok when they turn up.