eCalc Guides — sizing & practice

Practical guides for sizing electric RC drives — multicopters, airplanes and licensing. Each article answers a real search intent and links to the matching eCalc calculators.

Primary tools: xcopterCalc, propCalc, perfCalc, cgCalc.

1. Size a multicopter drive: hover throttle & thrust-to-weight — xcopterCalc
2. Propellers for frame size: largest prop that fits — xcopterCalc
3. Flight time and LiPo sizing — xcopterCalc
4. Motor overheating: what the calculation shows — xcopterCalc / propCalc
5. Kv vs prop diameter — calculate, don’t guess — xcopterCalc
6. Coax vs flat: hexa and octo tradeoffs — xcopterCalc
7. Airplane drive with propCalc and perfCalc — propCalc + perfCalc
8. Center of gravity before maiden with cgCalc — cgCalc
9. Setup too marginal: 15 s peak limits and headroom — xcopterCalc / propCalc
10. Private vs commercial use and license — eCalc Home