ORIGINAL: da Rock
That's an interesting lineup of devices.
It looks like about $80 for the recorder and about $40 each for altitude and speed recorders. Setting up their software on you pc turns the stuff into decently useful data loggers.
I think it'd be worth the effort and for under $200, it looks like an entirely new dimension in prop testing. For years I've used a stopwatch to do "unlimited vertical performance" tests. (Never had it ever.) With this setup, those tests would be way more accurate. And if you were to add in the GPS locator stuff, and an accelerometer........ amazing............
That's one way
I will soon have my 526AFS Zlin ready -with a EFlite 60 (very soon just finishin it up) 7 lbs 750 squares here is a pic of customer's versions from years .
The $$$ will go into props and batteries . I will time it by flying it over our 600 ft runway.