Cheapest way is to buy a different wheel, doesnt have to be new.
Think about it, whats the best price for a fixed hub?
£25 lets say.
Cheap cog & lock ring: £10
Spokes: 50p x 36 = £18
So thats like £53 even if you recycle the rim just for parts. Labour will be £15 or so on top.
You can get a very good second hand wheel for that, or a decent new one. If you have a bunch of old spokes/fixed hub to recycle then it can work out cheap but youll still need to build the thing.
Cheapest way is to buy a different wheel, doesnt have to be new.
Think about it, whats the best price for a fixed hub?
£25 lets say.
Cheap cog & lock ring: £10
Spokes: 50p x 36 = £18
So thats like £53 even if you recycle the rim just for parts. Labour will be £15 or so on top.
You can get a very good second hand wheel for that, or a decent new one. If you have a bunch of old spokes/fixed hub to recycle then it can work out cheap but youll still need to build the thing.