Originally Posted by WillisB

Dork disks add to the flywheel effect of your rotating tire. Thus you will be able to go farther with less effort when you hit the flat at the end of your downhill speed run. It can even help you on the uphills. The small amount of energy you expend to get the disk up to speed will pay dividends. I am thinking of getting one in say a 25 inch diameter made of depleted uranium. Once I get it up to speed I won't have to pedal again for 20 miles!



(For those OCP's that may pop in from the road forum, this is a joke.)