I'm resurrecting my old thread on my '79 Schwinn Twinn Sport (say that 10 times fast) instead of starting a new one.

Last year I did nothing with this bike. It hung in the basement gathering dust. Over the winter I decided to re-visit the lack of success I had trying to make it more suitable for the mountains.



This time around I had several goals:

1) Convert it from a double to a triple, which meant moving the timing chain from the right to the left.

2) Improve the braking by having "Quad Brakes" operated from two levers.

3) Make it into an upright position bike with fenders which Mrs. PB will enjoy for trips to town, picnic, MUPS, etc.

Last night I took it for a solo test spin and I'm very pleased!

Here are a few of the specs:

Drivetrain: Huret Eco Duopar RD and Duopar FD, Suntour barend ratcheting shifters, Suntour Perfect ultra spaced 6 speed freewheel (14-32), Sugino crankset 48-40-30. The rims are Alex 27" ones from Nashbar and the tires are Panaracers 1 & ¼" with kevlar. I'll probably use SPD pedals in the front and platforms in the back.



Timing Cranks: Moved to the left side from the right. Added the single speed pulley for tension. I wanted to add an eccentric BB but my shell was not large enough. Eventually I made the right hand captain's crank arm out of a crankset I pulled off a junked Peugeot.



Brakes: Originally it had a front sidepull caliper and the rear drum. Now it has rim DiaComp centerpulls, as well as front and rear drum brakes in the hubs. The levers are dual pull MTB syle. The right lever pulls the centerpulls and the left the drum brakes.



Frame & Accessories: I added the chrome fenders, rear rack, front bar bag, Brooks B-72 saddles, and Northroad captain & upright stoker bars. The grips are leather ones from Nashbar.