With a brand new bike, a small amount of rubbing and noise is expected to occur during the break-in period of the brake pads. If the wheel spins freely or mostly free, making no or barely any contact between the brake disk and pads, it is recommended to put at least 25-50 miles on the bike to allow time for the pads and rotors to break in before making the first adjustment.
If the front wheel seems to be held back significantly by the brakes, follow these instructions to make an adjustment:
First, unplug the battery from the charger (if charging), use the keys to turn the battery into the OFF position, and remove the battery from the bike as set aside.
If the brake pads are just a little too tight, first attempt to fix this with the adjustment knob on the brake lever on the handlebars depicted below.
If your brake pads are a little too tight, you’ll want to turn this silver knob clockwise (to the right) a few turns to loosen the outside pad of the brake caliper. Check the clearance between the disk rotor and the pads by spinning the wheel again to see if it spins freely. If so, depress the brake lever to determine if they are adjusted properly and to check the brakes are not too loose. If necessary, you can turn this brake adjustment knob counter clockwise to tighten them slightly.
Note: The left brake lever corresponds to the front brake, and the right lever to the rear brake.
If you’re unable to tighten that knob any further and still running into rubbing or squeaks, adjust the inside brake pad. To do this, look through the wheel to the inside of the brake caliper, looking for the quarter-sized silver disc depicted here:
Rotate the spokes out of the way if necessary and slot a 5 mm Allen wrench through the wheel, directly into the hole in the center of the silver brake adjuster. Rotate the adjuster counter clockwise (to the left) to back the inside pad away from the disk 1-3 clicks.
Note: For the RadRover and RadMini, both front and rear brakes' inner pad adjustment will be accessible without removing the brakes from the bike. To adjust the rear brakes on the RadCity and RadWagon, unbolt the caliper from the frame (the bolts shown in the picture below), adjust the pad, and re-attach the brake to the frame. Torque these screws to 10-12 Nm.
If that didn't fix the issue or the disk brake rotor looks like it gets twisted when the brake is squeezed, the caliper may need to be centered.
To do this, start by loosening the two bolts that hold the brake caliper (shown in the picture below) onto the brake adapter that’s bolted onto the bike frame. You’ll need to use the 5 mm Allen wrench included in your toolkit to do this. Once these are loose, and the brake caliper is free to wiggle around, squeeze and hold the brake lever for this caliper, up on the handlebars. While holding this down, re-tighten the 5 mm bolts. When tightening the bolts, only turn the bolt 1/4th of a rotation then switch to the other bolt. Go back and forth to evenly tighten both bolts to 10-12 Nm. This will center the caliper over the rotor and should take care of some of the noise and rubbing.
If you’re still having issues with the brakes, contact us and we’ll be happy to help out!
Phone: (800) 939-0310 x 2