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Old Jul 09, 2001, 10:13 PM
tic
thunderscreech
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New Cumberland, PA. US
Joined Dec 2000
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same endurance regardless of throttle setting

This puzzles me.. I fly the skyscooter WOT on 1650 NiMH .. 8 cell packs for 12 min. or so then bring it in. There is more mah left in the pack, but I know the motor and battery are getting way hot so I end the flight early.. Then, I fly at half throttle on a fresh pack, for the same 12min.. battery and motor seem just as hot, and battery pack takes the same mah in a charge.. can't figure it out. Motor is definetly running slower at reduced throttle, should be using less current.
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Old Jul 09, 2001, 10:16 PM
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Houston,TX
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What type of speed controller?
A low rate controller will work like this.
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Old Jul 09, 2001, 10:25 PM
tic
thunderscreech
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New Cumberland, PA. US
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yeah.. figured it was the ESC.. it's the one that came w/ the plane.. HITEC SP1010.. frame rate controller???... so what happens to the excess current ?
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Old Jul 10, 2001, 03:08 AM
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Heat
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Old Jul 10, 2001, 04:24 AM
tic
thunderscreech
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New Cumberland, PA. US
Joined Dec 2000
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same heat after full throttle run as one at 1/2 throttle.. how can less current heat the same amount? doesn't the speed controller turn the motor on and off repeadedly? If it turns it off alot during half throttle operation.. I would think the battery would last longer.. Is the heat in the ESC?
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Old Jul 10, 2001, 05:42 AM
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glen innes australia
Joined May 2001
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Tic, take their word for it. frame rate throttles will do this,they are inefficient at partial throttle settings. I wont go into the technical details -I'm sure they are posted here somewhere. The real world of electronics is a little more complex than the simple verticle and horizontal lines shown in basic electronics books. If it was that simple then we would not need high rate controllers.
Regards
Bob

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Old Jul 10, 2001, 07:39 AM
tic
thunderscreech
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New Cumberland, PA. US
Joined Dec 2000
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Yeah.. time to upgrade ESC... mo money
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