Originally Posted by
Adis
I have v brake on both of the wheels. I only want the front to have disc brake and the back to have v brake.
Yes, you could certainly do this with new fork and wheel and the other mechanical bits to make it work but I'm with the other posters who think this is a lot of expense and headaches for a minimum of improvement especially if you're going for a mechanical caliper rather than hydraulic. You describe your bike as a normal single speed but most don't have V-brakes so more info and pic would be helpful. Depending on your bike this could be easy or very difficult to find a proper size/fitting fork.