ORIGINAL: jonkoppisch
I have telemetry on my planes and 400 ft isn't as high as one would think. If you do a loop you've probably broken 400 ft (unless it's a profile foamy)
The loop part isn't true. The bottom of the cistern of most city water towers is 125 foot. Most people flying models never even approach 400 feet high. You might check your telemetry,
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