Thanks guys. I found a electronic speedo on dealextreme.com for $4.44 with free shipping. Not sure how it will work but I ordered 2 of them. Looks similar to the name brand ones I have seen. Does anybody remember the ones we used to use that was just a plastice dial with an air hole in the back facing forward that would register your speed. Been way over 40 years since I played with bicycles and it's amazing some of the stuff I'm seeing on these boards. I'm going to build a surface plate and do a scratch build or two.
Here's a link to the speedo if anyone is interested
DealExtreme: $4.44 Electronic Bicycle Speedometer