At least, that is what I think this model is:





Anyway, I like it, and I want to use it.

However, I can't figure out how to mount it correctly on a Campagnolo hanger. If that is at all possible.

The problem is that the tab that should keep it at the right angle is not in the expected position, which is - more or less - at one o'clock (viewed from the drive side).

The location of the spring and the slot in the mounting plate keep the tab firmly at five o'clock:






The only thing I can think of is that this was meant for a Huret hanger. Or am I missing something?

I've checked this forum's posts that I could find on the Simplex Criterium - amongst which this helpful one by [MENTION=61614]verktyg[/MENTION]. They all show the later model, which has the spring in a different location. So I can't replace the mounting plate with one from a later model.

Thanks in advance for any information that may help.