Originally Posted by
big chainring
Simplex lover here. As far as replacement pulleys, just swap out from an old POS SunTour.
I'm also a fan of the Huret Alvit. Just put one on my Jeunet, with an Atom freewheel.
I'm with you on beefing up your Prestige with Suntour pulleys.
I am not a fan of Huret's Allvit though. I think the Allvit (along with that horrible Plastic FRONT derailleur) is what caused people to write-off their other later efforts.
IMO, the Huret Challenger/Success is the equivalent of anything that Suntour ever put out. (At least that's the way they have performed for me on my bikes.)
The Duopar has its fans too.