Thanks dirty your on the right track I think wave really had it down with that eagle treewith that recording telemetry system but maybe one that doesnt do it "ALL". Just would like a read out or at least a peak rpm system an maybe a temp gauge.
Man I really like that eagle tree system but dang more than I want to spend I just ordered the radio from tower I guess I can cancel an Iook a nomadio or the spektrum.

Maybe Im thinking to much into it but wouldnt it be simple enough to use the eagle tree tach sensor an set up a pen sized circuitboard with a flash drive to record overall time an how many passes the sensor recorded in that time frame, that would give me the data needed to download an convert to a real rpm range. Man I guess Im just trying to reinvent the wheel. ok so throw some links at me where to get each nomadio or spektrum with the sensors. Man already spent some$$$ to get eveything I thought I needed. I guess I really dont need need this but thought there could be a slightly cheaper method the darn sensor is only 14 buckaroos