Originally posted by Ron1950
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144 mph is almost too high to be correct. What model GPS did you use? I had previously used two GPS units that were giving erroneous readings in the 140+ mph range when subject to high acceleration, one was an Frsky ADV ( total garbage) another is an old MTK chipset based bluetooth logger. These had spurious values indicating my (v1) Avanti was going 140 mph and I knew based on the power available that this was impossible. Finally I found a Ublox unit that was able to give accurate readings that are consistent with pitot and radar based measurements. With the UBlox, the Avanti V1 does 115 mph level and 120 mph on a dive just as advertised. My v2 was only doing 105 mph level flight.
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