It's here. The Repeat Robotics Mk4 "Mini" 16mm planetary brushless drive motor. Here's your chance to have all the speed you can handle in your antweight. Mk4 is a large step forward from Mk3 (shipped thru October 2024). Full upgrade info below.
Improvements:
- 1204 was changed to a 1106 for more stator volume and more outrunner clearance
- Output shaft is made from hardened 4130 steel, to improve lifetime and is integrated into the carrier plate, to improve durability.
- Output shaft is retained without the use of a circlip, eliminating the main failure mode and improving the durability
- Further changed the wire retention with stronger stator winding wires and mechanical clamping of the wires at the stator base.
- Gearbox baseplate is integrated into the brushless motor base, removing screws and additional points of failure.
Specifications:
- 1104 3500kv custom brushless motor
- 2s-4s rated voltage
- 16mm, 28.5:1 all metal planetary gearbox
- 4mm “D” extra long output shaft (can be cut to length)
- 28.5:1 Drive with 3mm shaft – 24.7g
- ~24g weight with 4mm shaft (can lower the weight by cutting down the shaft and shortening the wires)
- Length: ~28mm body length for 28.5:1 ratio
- 10.5mm M2 Face mount hole pattern
- Comes ready for combat, just solder the motor leads to a brushless ESC and you’re on your way (Soldering iron required)
- If installing in a Viper or using the Flat Motor Mounts M2x4mm screws are ideal for mounting.
- This is not a drop in Viper upgrade, it requires new drive ESCs and a BEC.
- Notes:
- These are brushless motors. If your receiver was being powered from a BEC in your brushed drive you'll need to add a BEC.
- These motors ship with bare leads, you'll need to solder them to the ESC or add your own connectors.
Performance:
- 7.4V input (2S)
- 11.1V input (3S)
- 14.8v input (4S)
Cad Link:
https://grabcad.com/library/repeat-drive-mk4-1
Warning:
These gearboxes can only accept ~2mm of face screw engagement. Using screws that are too long will result in damage.
