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Electric Towplane sets a new climb record

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Old January 14th 18, 02:30 PM posted to rec.aviation.soaring
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Default Electric Towplane sets a new climb record

On Sunday, January 14, 2018 at 5:33:15 AM UTC-5, Dave Nadler wrote:
On Sunday, January 14, 2018 at 8:32:19 AM UTC+13, Tony wrote:
My experience in the Electro in Uvalde and Kansas is that motor temp
becomes an issue well before battery and controller temp.

Depends on the machine. Antares has better motor cooling,
but batteries start to get hot and require early shutdown
at Uvalde for example (I typically shut down 800-1000 ft).
Perhaps cooling for enclosed FES motor isn't as good?

See ya, Dave

Pylon mounted motor will obviously cool much more easily than enclosed motor cooled through a small hole. Each concept has it's trade offs.

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