He has just bought a lovely shiny fixie bicycle and is manically enthusiastic about trying the sport out.
So am I now: You can use any bike but I wanted to try the fixie stylee but I didn't want to spend £400 like he did; I tried it this way . . .
Step 1: Starter bike.
I went to a friend who is moving house; he had about eight scrap bikes; I chose a shopper and a BMX.
This could be made from one bike but I like the height and open frame of the shopper and the tough wheels of the BMX; so I used both.
The first action was to take the wheels off the shopper and then remove all cables and brakes.
The shopper tyres were flat and as I don't need brakes it was ok to use the slightly smaller BMX wheels; and they look good.
So I put the BMX wheels on the shopper frame but I needed to slightly widen the forks and the rear triangles by standing on one side and pulling the other side up, not too much though; also I had to file out the dropouts on the front fork a little to accept the marginally wider axle.
Step 2: Freewheeling to fixed
I sprayed some solvent on the freewheel to clean it and simply welded the two moving parts together with an arc (stick) welder.
I'm no welder as you can probably tell but it took about 30 seconds and is holding.
I've heard that the expensive bikes have a double threaded hub so that a lock-ring can be used to ensure that the sprocket does not come loose.