We have 2 computers on the bike - a Cateye wireless on the front & a Cateye wired one with cadence on the rear.
A couple of weeks ago we were tucking down a big hill near home (road up to NCAR). Once we slowed down, we both checked our Max speeds.
The wirless showed 65+ mph (which I don't believe) and the wired one showed 53.5 mph (which sounds about right). In all other circumstances the two agree within a few percent.
I could understand a computer missing pulses (showing a slower speed) but I have no idea how it could pick up pulses (showing a higher speed). This is the second time this happened in 5 or so years (not a big deal) - both times when going over 50 mph but in different areas.
Any idea how this could happen?