Moto Calc will predict weight, current, voltage at the motor terminals, input power, output power, power loss, motor efficiency, motor RPM, power-loading, electrical efficiency, motor RPM, propeller or fan RPM, static thrust, pitch speed, and run time.By producing a table of predictions, Moto Calc lets you determine the optimum propeller size and/or gear ratio for your particular application.
Alternatively, you might just slightly revise the current suggestion by making changes in the Moto Calc Workbench window, perhaps trying different propeller sizes, more or fewer cells, or a different gear ratio (step 2).
Or, if you had specified any ranges in step 2, you can select a different result from the static analysis and generate a new in-flight analysis (step 3).
You can then use the rest of Moto Calc to investigate one or more of the suggestions in detail, and then use Moto Calc's Mot Opinion feature to get a plain-English analysis telling you how the power system, and your plane, will perform.
If you are a bit more experienced, and know some of the components you want to use to power your model (for example, a particular motor or battery), you can tell the Moto Wizard this and it will try to choose a suitable power system using those components.
button, save them to a text, HTML, or comma-separated-values (CSV) file by clicking Save..., or copy one or more of the suggestions to the Windows clipboard (to paste into an e-mail, for example) by clicking with the secondary mouse button and selecting Copy One Result or Copy All Results.
When you are happy with the Moto Wizard's suggestions, select one (click on it with the mouse), and then click the Accept button.
Using color coding, the table will also indicate the model's predicted stalling speed, optimal flying speed, and hands-off flying speed (these speeds are generally at less than full throttle). button at the bottom of the in-flight analysis to display the Mot Opinion page, which will give you a plane-English description of how your plane will fly, and any potential problems with the selected power system.
Based on the information in the in-flight analysis and Mot Opinion report, you may wish to revise or refine your power system.
These five steps are described in more detail below.
The Moto Wizard is described in great detail in its own section of this manual, so we won't repeat it all here. The Moto Wizard consists of a number of pages on which you answer some basic questions about your model, it's intended performance, information about where you fly, and any preferences you may have.
Moto Calc's graphing facility can plot any two parameters against any other (for example, lift and drag vs. If you have particular requirements, such as a minimum run time, maximum current, or maximum power loss (which is dissipated as heat), you can use Moto Calc's filter facility to filter out the unacceptable combinations.