Old 03-29-20, 11:18 AM
Senior Member
bikeaddiction1's Avatar
Join Date: Jan 2015
Location: Calgary Alberta
Posts: 244

Bikes: Many

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 78 Post(s)
Liked 32 Times in 27 Posts
I believe the 77 PX10 still had Simplex derailleurs, and if so you need to stick with it unless you are willing to permanently modify the derailleur hanger or use a bolt on claw type hanger. I looked at doing this to my 72 PX10 to modernize it but I did not want to bastardize the frame and change the chain line for a wider hub. It also becomes expensive as you change wheels, drive train etc.

I would buy better tires on line or change out the rime as I mentioned in post #7 above.
bikeaddiction1 is offline  
Likes For bikeaddiction1: