RCU Forums - View Single Post - Alternatives for a Flex Potenza 65-3D motor?
Old 03-30-2023, 08:59 PM
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ron_van_sommeren
 
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Originally Posted by LLRCFlyer
... data on this motor such as maximum continuous allowable amps or watts ...
Conservative rule of thumb for max. continuous motor power: 4watt per gram motor mass.
A safe starting point.

You already have the velocity_konstant_Kv
Note that Kv says nothing about a motor's maximum power, both the motor in your toothbrush and the motor in e.g. a 1:1 train can have the same Kv.

However, Kv has a massive effect on actual current and power drawn, both are proportional to Kv cubed.
E.g. doubling Kv, would 2³=eight fold current and power.
Some expensive realistic and some extremely silly examples, hopefully instructive as well.
Therefore always check/measure currentdraw in a new/changed setup.

Originally Posted by LLRCFlyer
... max voltage? ...
Motors can any voltage in RC land, as long as current, power and rpm don't get too high.
The wire insulation/lacquer/resin/coating can withstand several hundred volt.

Originally Posted by LLRCFlyer
... Is anyone else experiencing slung magnets with this motor? ...
Method for securing the magnets afterwards, as an extra precaution. Also describes a method for epoxy heat treatment to increase glue maximum temperature:
old.torcman.de/motoren/manuals/manuals_e.htm
→ Assembly Procedure TM280, 350, 430
→ 3.2 Filling the magnet spaces

Originally Posted by LLRCFlyer
... Flex does not list any physical or performance data ...
Lucien Miller knows powersystems, they test their motors themselves, you can take their numbers to the bank, excellent propcharts. Not the usual nonsensical heap of voltages and propsizes.
www.innov8tivedesigns.com and www.badasspower.com


Prettig weekend Ron
• Without a watt-meter you're in the dark ... until something starts to glow •
E-flight calculatorswatt-metersdiy motor tips&tricksCumulus MFC

Last edited by ron_van_sommeren; 03-31-2023 at 03:01 AM.
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