Join Date: May 2012
Location: North of Canada, Adirondacks, NNJ
Bikes: Too many
Mentioned: 11 Post(s)
Tagged: 2 Thread(s)
Quoted: 123 Post(s)
While you haven't described the symptoms, if it's not a slack cable, or derailleur stop adjustment, my money is on the piece-o-crap grip shifter. I had more than one left side grip shift fall apart in my hands on vintage entry level treks.
A replacement 3 speed SRAM grip shift is about $18 + installation, or DIY. If you have an REI nearby, they may have one. Or get a 3 X 7 set of Shimano Tourney trigger shifters and put the problems behind you, also about $18, but then both FD and RD will shift more accurately.
Life is like riding a bicycle. To keep your balance you must keep moving. Albert Einstein
2016 Additions: 1981 Miyata 1000, 1981 Schwinn Voyageur 11.8 chrome, Schwinn Paramount 50th Anniversary, Dawes Galaxy, Raleigh International, 1985 Raleigh Alyeska