Originally Posted by
BlazingPedals
I guess I can't help much. The Speed Trap(tm) is a sensor that mounts *in* the fork, and sends at 2.4 GHz. So you need a 2.4 GHz wireless computer. I'm not sure if the signal is encoded or if any 2.4 GHz computer will work. The Bontrager Node 1.1 is about $70 = not very cheap.
Just because the SpeedTrap sensor is there doesn't mean you need to use it... There are certainly options that are cheapar than $70 out there.