Well to covert a rigid mtb I had I put on some 1.5" slicks and a new crankset with bigger rings on and although it was far better than how it was it isn't a road bike :/, weighed more and still didn't roll as fast. Like you say, alot cheaper though :)
Other things I should have done thinking about it would be to find a way to mount the bars lower compared to the seat (it had an oversized quill stem so was hard work to find :( )
Well to covert a rigid mtb I had I put on some 1.5" slicks and a new crankset with bigger rings on and although it was far better than how it was it isn't a road bike :/, weighed more and still didn't roll as fast. Like you say, alot cheaper though :)
Other things I should have done thinking about it would be to find a way to mount the bars lower compared to the seat (it had an oversized quill stem so was hard work to find :( )