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    Response
    Re: More hull work
    I decided to pull the 540 in lieu of an new old stock Goldberg β€œTurbo 550” I had built an old Goldberg
    Mirage
    airplane a few years ago and used a brushless outrunner to power it, the 550 motor was included in the kit. The Carl Goldberg company used that motor in both the
    Mirage
    and Electra sailplanes, when I was an avid aviation modeler I built both. I had built a
    Mirage
    while station in Germany in 88-92, and the 550 powered that plane nicely on 6 cells, even back then. It’s a long can motor similar to the EF76II that came in the PT15, but I suspect it’s a hotter wind, 27 turn or possibly 24, as it winds up considerably better on 7.2 volts. Hopefully I’ll have a decent turn of speed on 6 nimh or 2 lipos, if not I might do a brushless swap or a hotter open end bell brushed motor....or just go to a three cell lipo and see how long the motor lasts🀣
    20 days ago by Cashrc


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