So I got to thinking about building my winter build and looking at a jackshaft kit. I tell you if money weren't so tight I'd just buy one of Pablo's kits. But I was thinking how can I get that front crank to freewheel? I was looking through c list and I saw a tandem. DUH! The rear crank for the stoker is a freewheel crank with 2 sprockets. When the guy in front pedals the guy in the rear doesn't have to but the freewheel on a tandem rotates and transfers the power to thew rear- freewheeling. So the real question is where do I find a cheap stoker set of cranks? I looked at all the bike part sites and the cheapest I found them is $105. For that price I could save up the $$$ to buy the Pablo set. Anyone know where to get these cheap, used or something? And better yet has anyone tried this so that they can keep the pedals but use a jackshaft?