RC Model Car Boat Double Steering Arms | 3.1mm/4.1mm/5.1mm

Key Features

• Aluminum Alloy Body — The arm is made of aluminum alloy for use on RC car and boat shafts.
• Three Shaft Sizes — Bore options fit 3mm (0.12 in), 4mm (0.16 in) and 5mm (0.2 in) shafts, with bores of 3.1mm (0.12 in), 4.1mm (0.16 in) and 5.1mm (0.2 in).
• Side Screw Mount — Side fixing holes take M2 screws to secure the arm.
• Rudder Transmission Role — It can sit on the rudder output shaft or a DC motor shaft to transmit motion.
• Three-Piece Pack — The pack holds three pieces.

Product Specifications

• Material: Aluminum Alloy
• Bore Size: 3.1mm (0.12 in) (Fit for 3mm (0.12 in) shaft), 4.1mm (0.16 in) (Fit for 4mm (0.16 in) shaft), 5.1mm (0.2 in) (Fit for 5mm (0.2 in) shaft)
• Mount: Screw (M2)
• Piece Count: 3
• Age Range: 3-6Y,6-12Y,14+y

What It Is / How It Works

This RC double steering arm, made of aluminum alloy, is a transmission part for model cars and boats.

Who It's For / Use Cases

Steering arms like this suit RC hobbyists who build, rebuild or repair model cars and boats, especially where a rudder or motor shaft needs a transmission link.

How to Use / Care

1. Pick the bore that matches your shaft: 3.1mm (0.12 in) for a 3mm (0.12 in) shaft, 4.1mm (0.16 in) for a 4mm (0.16 in) shaft or 5.1mm (0.2 in) for a 5mm (0.2 in) shaft.
2. Slide the arm onto the output shaft of the rudder or the shaft of the DC motor.
3. Secure it through the side fixing holes with the screws.

How to Choose

Start with the shaft diameter on your rudder or DC motor, since the bore must match it. Compare materials as well: this arm is aluminum alloy, so it suits builds that call for a metal transmission link. Choose the bore size first, then confirm the pack count you need.

Frequently Asked Questions

Which shaft sizes does it fit?
The bores are 3.1mm (0.12 in) for a 3mm (0.12 in) shaft, 4.1mm (0.16 in) for a 4mm (0.16 in) shaft and 5.1mm (0.2 in) for a 5mm (0.2 in) shaft.

What is it made of?
It is made of aluminum alloy.

Does it need batteries?
It has no battery and runs without power.

How is it secured?
It is secured with M2 screws through the side fixing holes.

How many pieces come in a pack?
The pack holds three pieces.