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The derailleur is a bike component that moves the chain from one cog to another when the shifter is used while a rider is pedaling.If the cogs or chain are very dirty,grimy,or sticky,that can affect the bike's ability to shift properly. Check out the article and instructional video for how to perform basic bike chain cleaning HERE.If the bike chain falls off the freewheel cogs,or the bike is noisy or imprecise when shifting,a derailleur adjustment is recommended.1.Adjust the screw on the shifting wire when it is hard to switch the shifter. 2.Loose screw 1 slightly when the shifter can`t switch to the 7th gear; on the contrary,if it can`t gear down to the 1st level,loose screw 2 slightly and try again.3.Loosen screw 1 and 2 to make the derailleur move slightly away from the rim in case of the chain rubs the tire. 4.Tighten the screw when the shifter can`t switch to the highest gear.5.Loosen screw 1 and 2 to make the derailleur move slightly away from the rim in case of the chain rubs the tire. 6.Tighten the screw when the shifter can`t switch to the highest gear.
With a brand new bike,a small amount of brake rubbing and noise can occur during a break-in period known as bedding-in new brakes. If your brakes are new,click here to complete the bedding-in brakes process. Rubbing and noise will often resolve over time with normal brake use (after about 25-50 miles). If you are experiencing brake noise after the break-in period (25-50 miles),follow the steps in this article to adjust the brakes.PS:To get the most life out of your brakes,use both the front and rear brake together,and always engage the rear brake first to prevent excessive strain on the front wheel and fork and to prevent loss of control.
1.Check the position of the wheelGet the bike ready for maintenance. Turn off the bike,remove the battery,and press and hold the MODE or power button to discharge remaining power.2.Identify which brake needs to be adjusted. Keep in mind that the left brake lever controls the front brake and the right brake lever controls the rear brake.3.Locate the barrel adjusters at the brake lever and brake caliper.4.Adjust the barrel adjusters so they are fully threaded into the brake lever body and brake caliper. Loosen the lock ring away from the lever body,then twist the barrel adjuster toward the lever. Repeat with the barrel adjuster at the brake caliper until the barrel adjuster is fully threaded into the brake caliper.5.Check that the wheel is fully seated in the dropouts,centered with the bike,and that the quick release lever is properly tensioned. A loose wheel,or one that is not centered in the fork dropouts,can cause brake noise when the brake rotor rubs on the brake pads as the wheel spins. If the wheel is not fully seated in the dropouts or centered with the bike,follow the steps below to adjust the wheel.6.Position the bike so you can easily see the brake rotor in between the brake pads.7.To check the front brake rotor, prop the bike on the kickstand so the front wheel is off the ground. Have a friend stabilize the bike,if needed.8.To check the rear brake rotor,flip the bike upside-down and set the handlebar grips on the blocks to protect the display and controls,or have a friend stabilize the bike upright.9.Spin the wheel to check if it spins freely. There should be little to no contact between the brake pads and brake rotor. Make sure you do not touch the brake rotor at any time,especially when the wheel is spinning.10.While the wheel spins, check the condition of the brake rotor. Use the brake lever to stop the wheel. Squeeze the left brake lever if testing the front brake and right brake lever if testing the rear brake.Once you have confirmed that the brake rotor is in good condition,continue to the next section to center the brake caliper.11.Adjust the brake cable tensionCaution:Brakes are a critical safety component of your bike. Adjusting brakes requires time,attentiveness,and experience. Ensure you follow all steps and contact us for help if needed. Not following the instructions below can result in improperly adjusted brakes and lead to damage to the bike and its components,property damage,or serious injury/death. If you are not confident in your ability to successfully and safely perform all steps,we recommend having the work performed or checked by a local,certified,and reputable bike mechanic.
All bikes from Rattan Ebikes come equipped with disc brakes. Disc brake systems need to go through a break-in period (a process called "bedding-in") before they are able to function optimally. Bedding-in new brakes gets the brake pads and brake rotor ready so you can ride Rattan and brake smoothly. The process uses friction to transfer brake pad material to the rotor. The more closely the pattern on the brake pads matches those on the brake rotor,the more effective and powerful the brakes will be. 1.Get your bike ready. Once your new bike has been properly assembled and cleared as safe by a certified,reputable bike mechanic,take the bike to a flat,open area with plenty of room and no obstacles. Ensure you have read the Owner’s Manual,are wearing appropriate safety gear,and fully understanding how to operate the bike.2.Start riding to 10 mph without using throttle or pedal assist. Turn on the bike,set the pedal assist level to 0 or 1, keep the throttle in the off position,get on,and pedal with no or little assistance to about 10 mph.3.While riding,carefully squeeze one brake lever slowly and evenly,making sure to not stop the bike completely. Once the bike slows to a walking pace,release the brake lever so the bike is still moving slowly. Caution: DO NOT stop. Braking to a complete stop can leave a build-up of pad material in one spot on the rotor. Make sure to start riding the bike,squeeze the brake,slow the bike,and release the brake lever while the bike is still moving.4.Repeat steps 2 and 3 around 10 times in a row with the same brake lever,making sure to not stop the bike completely. The brake power should increase with each repetition. Working one brake lever at a time will maximize the heat generated through the friction of the pads on the rotor and will help transfer an even layer of pad material onto the rotor.5.Repeat steps 2-4 with the second brake lever.6.Repeat steps 2-4 at 15 mph with the first brake lever. Once you have squeezed the lever to slow the bike 10 times at 10 mph with each brake lever,repeat the process again from a faster speed of 15 mph with the first brake lever.7.Repeat steps 2-4 at 15 mph with the second brake lever. Once this process is complete,always use both brake levers to slow and stop the bike as needed. If the brakes seem loose after completing the process,click here to learn how to adjust your brakes.8.Test the bike fully and ride Rattan!