If you've decided to convert your bike into an electric one, figuring out how to install all the components on your bicycle frame can be overwhelming.
Installing a torque arm is pretty simple as long as you have some axle nut tools and a spanner on hand to tighten the torque arm up. Most fit into the frame dropout of your bike frame with ease.
We've put together a short guide below which will explain the exact purpose of a torque arm and how to install them on both a rear hub motor and a front hub motor.
Torque arm installation is very important on electric bikes since it stops damage to frame and forks on an electric bike.
You will mostly find that e-bikes with a 250-watt motor and above need to have a torque arm, the purpose of this component is to make the power transfer from the motor to the wheel smoother and less harsh on the e-bike.
Installing a torque arm onto your front wheel is easy as long as you have your torque tools on hand like a wrench.
We've listed some easy to follow steps below.
To install a torque arm on a rear wheel is a little more complicated than on a front wheel, but follows a similar process which we will list in detail below.
Why do I have to have a torque arm on my electric bike?
Torque arms are extremely important in electric bike conversions since the frame of a regular bike is not meant to handle the electrical components and strength of a motor. It essentially protects the dropouts on the frame from damage.
Do I need to put torque arms on my shop brought electric bike?
No, most e-bikes brought as e-bikes will already have a torque arm in place to protect the frame.
Should I use torque arms for my e-bike conversion if I have an aluminium fork?
This depends on the motor wattage, under 500W, then you will probably be okay without a torque arm if you have aluminium dropouts, but above 500W you don't want to risk ruining your frame.
Overall, torque arms are essential to install on both sides of your bike preferably when undertaking an electric bike conversion. They help to protect your frame dropouts from the torque of the motor which would otherwise cause damage, we would always recommend installing torque arms if your motor has a wattage over 250W - 500W.