8520 reduction gear with propeller

Motor size:8.5mm*20mm

work voltage:3.70-4.2v 1s battery

The following is a rough test for reference.

Voltage 3.7V, Current 2.60A, Power 9.62W, Thrust 73g

Voltage 4.0V, Current 3.00A, Power 12.00W, Thrust 82g

Voltage 4.2V, Current 3.14A, Power 13.19W, Thrust 88g

The shaft thickness has been increased from 1mm to 1.5mm, resulting in a several-fold increase in strength. The use of a longer shaft sleeve with larger gears increases the contact area with the shaft by 300% compared to traditional models, significantly improving gear slippage. The addition of a propeller holder makes propeller changes extremely convenient, taking only 30 seconds (requires a 4mm bore propeller).

A high-quality brand propeller, the GF5030, is used. Vibration during gearbox operation is significantly reduced.

The reduction ratio has been optimized to 12:54, ensuring powerful output.