Originally Posted by
thook
the simplex derailleurs are made of delrin plastic. famous for destructing after years of aging
edit: somewhat contrary to what i just said and the others are saying. in my experience the rear delrin derailleurs seem to be more durable than the front. i've built a couple of bikes for a friend using the simplex; the front clamp always breaks, but the rears work fine for a good while. i think i still have one out in my box of stuff
Indeed, the Simplex front derailleur, any front Simplex derailleur that has Dupont's Delrin plastic, is more than prone to failure. Several, perhaps many, busted ones have come my way...
And the front derailleurs do NOT have to be old to be broken. This Canadian made Peugeot Super Sport's derailleur failed in the first few weeks of use (bought the bike from my boss back then so know a bit of the bike's history)...
