Originally Posted by
merlinextraligh
Because you won't have enough resistance. Bigger rollers equals lower resistance. Look at the Power Curve for Kreitler's 4.5" rollers. If you get lower resistance than that, you'll need to add a resistance unit.
In addition to that, the hardwood will produce a heavy flywheel, which will ruin your spin. I made the mistake of experimenting with Kreitler's flywheel (it was on Ebay for less than $30, but I soon found out why); my happy fluid spin deteriorated into that of a choppy, Parkinson's-afflicted newbie-triathlete.
But if you are insane, this is perhaps a perfect idea. Good luck!