Ski Bike

Step 2 Remove the chainwheel

You don't need or want a chainwheel on a ski bike. I don't know if you've ever been damaged by a chainrwheel in a bike crash, but its not fun. This bike has a one piece crank, so this is about as involved as it gets to remove it. If you've got a 3 piece crankset, then you can probably just unbolt the ring(s) with a 5mm hex wrench.

Take the pedals off.

Loosen the jam nut on the non-drive side. Remember, its reverse threaded, so you've got to turn it to the right to loosen it.

Remove the bearing race (cone) the same way and pull out the bearings (hopefully they're in a retainer) and set these aside (keep em clean if you don't want to have to clean and regrease the bearings, or don't if you honestly couldn't care less about the bike. ). Slide the crankarm out through the hole and set on your bench.

Now you have to remove the other bearing race and free the chainwheel. This one is threaded normally. Hopefully you have one of these tools! If not, you can probably make a screwdriver and hammer work, or throw it in the vise and twist it off, be creative.

Put the thing back together minus the chainwheel and tighten it down. Put the crankset back on the bike the way you took it off and adjust the bearings properly. (Note: if you don't want the cranks to move too easily while you're riding and you don't care about the bike, then you can over-tighten the bearings so that it doesn't spin freely.)

You should now have a nice clean looking ski bike frame.