— a variety of gears for use in mechanical transmissions of radio-controlled models. These can be driving, driven and intermediate gears, gears of differentials (see the relevant paragraph) and gearboxes, etc. And replacement can be carried out both directly for repair, and for improving the model and tuning its characteristics. So, by changing the stock gears to a set with a higher or lower gear ratio, you can increase the speed or “traction” and acceleration of the model, respectively; and the replacement of plastic parts with steel ones significantly increases the service life of the mechanisms.
