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Author Topic: Graupner Electro UHU build  (Read 484 times)

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Online Frank v B

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  • TEMAC - Assistant to the Assistant Greeter.
  • Real Name: Frank van Beurden
  • TEMAC #: 141
  • Started Flying RC: 1989
Re: Graupner Electro UHU build
« Reply #15 on: January 13, 2019, 09:24:29 pm »
Everything is done.

Radio works, wigglers work, motor (auger) works.

Final score: Total weight 33.2 oz.* with a 3 cell 1500mah battery.
The original weight with the Speed 600 and 7 cell (8.4 volts) 1.6 amp nicads: 45.8 oz.  This is 12.6 oz or 38% heavier than the BL/lipo version.  Wow.

Frank




* the 33.2 oz total weight breaks down as follows-  Fuse: 22.6 oz, wing 10.6 oz
"Never trade luck for skill"

Online Frank v B

  • Ace
  • *****
  • Posts: 2167
  • Karma: +20/-1
  • TEMAC - Assistant to the Assistant Greeter.
  • Real Name: Frank van Beurden
  • TEMAC #: 141
  • Started Flying RC: 1989
Re: Graupner Electro UHU build
« Reply #16 on: April 07, 2019, 03:00:44 pm »
Maidened the UHU this morning at Rogo Field.  Rob D. tossed it in the air.  Flew extremely well and a surprising amount of power considering it is only a 450 outrunner.  Used a larger than required battery to act as nose weight.  Used a 3S 2200.  If balance were not a problem I would have preferred a 1200 3S pack.

All brushed motor designs come out tail heavy when converted to brushless motors.

Frank
"Never trade luck for skill"