Wanted: 700 wheels suitable for a tandem

V brakes fit directly on the cantilever bosses brazed onto frame, so if you have canti's you just undo the allen bolts, Bob's yer uncle etc.

SJS etc do 57mm etc dual pivot side pull brakes which are the business,the brakes can be mounted in the reverse position but beware the front brake needs to be hellishly long, and its got to reach lots further than if sitting on the front as usual.

I found there's two types of V brake adapaters, ones good, ones crap, and all I know is the good ones are 15 squid each!!

• they're a pulley wheel in line with the brake cable from leverto brakes, and sit in the hinged cable guide of the brakes (all shiny alu so look ok ish), the cabe dose a double wrap around the pulley wheel, its just a question of getting the cable lead to sit in the right place on the pulley wheel.
  
  

Obviously braking power is a major factor on a tandem, I run a handlebar changer with cable as a drag brake to a dual pivot brake on the rear,just helps on long downhill stretches- a bit like throwing the anchor out!

PS V brakes with MTB levers don't need adapters, its only required on drop bar brake levers.