Originally Posted by
mondonson
I want to modify a 1980' Bianchi to make it a 2 spees fixie. I have ride fixie for over 3 years but I wanned to do something different and modify this one. I will change the front derraliur between the two gears and keep the derraliur in the back to keep tension on the chain. I preffer fix a lot more, however for the landscape in which I ride two gears would help a lot. Also all te accesories of the bike are campagnolo( caliper breaks, crank, seatpost, wheels) and except for the derraliur in the back which is chimano that way I would keep all of them on the bike. What suggestions do you have?
I am not sure you understand that a fix gear cannot have anything serving as a chain tensioner because as soon as you backpedal (and you will), the force of backpedaling will trash anything ever made. That means no derailleur will ever work. On top of that, it is the experience of many of us that a fix gear must be simple and rugged. Now there are fix gear internal hubs that allow the rock simple chain setup you must have to have a safe and feasible fix gear as posters above have discussed.
Now, perhaps when you say "fixie" you mean single speed which is a one speed bike that can coast. In that case,you proposal can work. But say single speed or SS from now on if that is what you mean. A fix gear is a completely different animal. Fix gears have a single cog in back that is screwed directly onto the hub then locked solidly in place. A fix gear can never coast
Ben