Yellow/blue scripted Shimano 105?? Why did anyone have to go and mention that stuff..? UGGGH. Ugly as it gets!

I got my 79 PX-10, and the first thing I replaced was the front derailleur. It wasn't broken when I got the bike, but within a few days, I think on the first ride, Snap! I tried to shift into the big ring, and it slipped down the seat tube instead of moving. I ordered one of the NOS all metal Simplex FD's from Yellow Jersey I think? Maybe it was Velo Orange? I never looked back. The rear derailleur was a full alloy Simplex already, so no problems.. I prefer to change the plastic Simplex derailleurs on any bike I acquire that has them. An ounce of prevention, and all that jazz.

The Suntour VGT and Luxe derailleurs I like well enough, but they tend to get sloppy in the parallelogram joints. It depends on the amount of use they have seen though. One bike I had with a VGT, you could grab the lower jockey wheel, and move it side to side at least a half inch. A nice fresh one, sure gimme! But if the bike has a lot of road grime, and has seen heavy use, I check the cage play before proceeding.,,,,BD

Suntour Cyclone M-II, is my ALL time favorite friction derailleur, bar none.