RC FE Boat Setup Calculator
What this calculator does
The RCexplained FE Boat Setup Calculator is intended for fast electric RC boat builders who want more than a simple pitch speed number. Boat setups are sensitive to motor Kv, loaded voltage, prop diameter, prop pitch, prop style, hull type, battery strength, ESC headroom, and water load. This calculator uses catalog-based component selections where available so the estimate can stay tied to realistic motor, ESC, prop, and LiPo assumptions. It is useful when choosing between props, checking battery stress, comparing motors, or deciding whether a setup is too aggressive for the hardware. Enter the motor, ESC, battery, cell count, prop, and hull information, then review speed, current, wattage, and setup read values. Example: before moving from a smaller prop to a larger prop, use the calculator to see whether the speed gain is likely to come with a major increase in current or battery C demand. Always verify final results with temperature checks and real data.
In practical terms: It estimates fast electric RC boat speed and electrical load while considering prop and battery demand.
How to use it
Select the closest motor, ESC, battery, prop, and hull type. Use overrides only when you have measured values or a known custom setup.
Example calculation
Compare two propellers on the same motor and battery to see whether the larger prop creates too much current for the ESC or pack.
FAQ
What makes an FE boat setup hard to estimate?
The propeller is heavily loaded by water, so small prop diameter or pitch changes can create large current changes. Battery sag, hull lift, prop style, and water conditions also matter.
Should I trust the speed result exactly?
Use it as a planning estimate. GPS speed, data logs, motor temperature, ESC temperature, and battery voltage after the run should be used to confirm the real setup.
Why compare battery load on a boat?
Fast electric boats can pull high current quickly. A pack that works in a lighter setup may sag badly or overheat when a larger prop is installed.
Can I use this for gas boats?
Use the simpler RC Boat Speed Calculator for quick gas or nitro speed estimates. The FE calculator is focused on electric motor, ESC, battery, and prop load.