Motobecane variator disassembly

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Here it is the best way I know of to crack open a variator without dealer tools:

Click the image to see the full scale version Variatorcrackin.jpg

Reasons to crack a variator:

--Elldawg99 22:37, 11 December 2007 (EST)


  • you can just drill a couple screws into your workbench to line up with these holes here or use 2 x 3/8in upside down drill bits mounted in vertically in a vice, set those holes onto it, thus immobilizing the assembly.


  • Then use some heat to loosen up the nut on the back plate and break it free with a long wrench (or use a spare set of handlebars for a lever).
  • Once you break the nut free, use some big channel lock pliers to break free the back plate.
  • also, I noticed that these screws here:


Had been locked in place with little dabs of weld. I had to clear out the slots with a flathead screwdriver and some firm but gentle hammer taps.

  • I like this way better because there is much less chance of warping the variator with the vise.