I have an Old Sekine 10 speed that belonged to my dad and I would like to put some new derailers and brakes on it.
My question is right now it has a Shimano lark rear derailer and a thunderbird front derailer with down tube shimano fingertip shifters. Is there a current set of derailers that will work on this bike or would I also have to change the cassette and crank as well?
Second it has Shimano tourney center pull brakes. They are in pretty good shape and work OK, but I need to replace the levers. Are there current shimano levers I can use with this type of brake?
Any help would be greatly appreciated.
Low car diet
What's wrong with the current derailleurs and brake levers?
Originally Posted by slopvehicle
The bike does not shift very well. I haven't had the time to work on tuning them up, but I thought with the age that is on them it might not be a bad idea to replace them.
The brake levers have safety handles which I despise so I just wanted to get rid of those. The current levers work, I just want to get rid of the safety levers.
Insane Bicycle Mechanic
The Lark and Thunderbird derailleurs were cheap stuff for their era- I would be willing to bet that replacing them with Shimano Altus or Sora parts will work without issue. You might run into a problem with the old chain and new derailleur- chains have gotten a little narrower over the years, but an "8-speed" chain will work on the current freewheel without issue. It won't be index shifting, but I think indexing is oversold anyway.
Originally Posted by jsbgraphics
Any current "road" brake lever will work with your centerpull brakes. Here's a good, basic set:
Here's the corresponding Shimano set: