Search: Posts Made By: ron_van_sommeren
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Forum: Power Systems
01-12-2019, 11:16 PM
Replies: 20
Views: 2,180
Posted By ron_van_sommeren

It is a good practice to have some headroom built...

It is a good practice to have some headroom built in.
About derating motors, controllers, batteries, electronics in general:

Derating, starting at ... Then there is the 75% rule of thumb ......
Forum: Power Systems
01-12-2019, 03:13 PM
Replies: 20
Views: 2,180
Posted By ron_van_sommeren

If current at wide open throttle is too high for...

If current at wide open throttle is too high for the controller then reducing throttle to get current below ESC max.current is not a good idea. Better prop down to get WOT current down.

In fact,...
Forum: Power Systems
01-12-2019, 03:13 PM
Replies: 20
Views: 2,180
Posted By ron_van_sommeren

Both current and power drawn are proportional to...

Both current and power drawn are proportional to Kv³. Therefore even minor changes in Kv can have considerable effect.
Going from 920 to 1300rpm/volt, current and power want to increase by factor...
Forum: Power Systems
11-03-2018, 01:39 PM
Replies: 20
Views: 2,180
Posted By ron_van_sommeren

No. If this were the case, it would overheat...

No. If this were the case, it would overheat instantly.
What was battery no-load voltage after charge, and battery voltage sag at wide open throttle?
Forum: Power Systems
11-03-2018, 01:34 PM
Replies: 20
Views: 2,180
Posted By ron_van_sommeren

No, unless they get overheated, resulting in...

No, unless they get overheated, resulting in higher Kv.


Overheating magnets causes de-magnetizing (https://en.wikipedia.org/wiki/Curie_temperature) (irreversible! :(), which in turn results in...
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