Reed switches will not work at that RPM. They are mechanical and will not respond fast enough. Even at lower RPMs, they would have a very limited life.
Can you post a schematic of your hookup, with a part # for the Hall sensor?
hello their thanks for the input wasn't the answer i was looking for though..the hall sensors i bought are both bought from a hobby store and the #'s on both sensors are (on the top A 04e ........ (on the bottom) 0805 270j the only diffrence between the two was the way they were wired one was black red white the other white red black ?????
if ya need a photo of the cdi and hall ill try and get some up i haven't posted pic on this site yet but ill give it a try....thanks again David king (Mer)