Originally Posted by
VegasTriker
The biggest change is probably in the gear range. The larger the rear wheel, the higher the gear range on both ends.
Bada bing bada boom boom boom!!!*
*albeit with a small quibble ... the gear range isn't higher on both ends. The gears are higher on both ends. A bad thing. However, a too high, low gear, because of a 26"/700C wheel, can be remedied relatively easily. A too low, high gear, because of a 20" wheel takes things like 60T chainrings to address. Not for the faint of heart.