1. Different frames
Challenger 300: MERIDA patented HFS technology aluminum alloy frame (with frog legs).
Duke 600: Merida aluminum alloy frame.
2. Different hubs
Challenger 300: FORMULA quick-release aluminum alloy disc brake hub.
Duke 600: Jiuyu aluminum alloy front and rear disc brake hubs.
3. Different front forks
Challenger 300: SRAM rockshox XC28 hydraulic locking front fork
Duke 600: Santuo XCM hydraulic shoulder control locking front fork.
4. The front and rear transmissions are different
Challenger 300: front transmission SHIMANO M430, rear transmission SHIMANO ALIVIO RD-M430.
Duke 600: front derailleur Shimano M390, rear derailleur Shimano M390.
Extended information
Duke 600 Frequently Asked Questions
1. BB5 disc brakes are easier to rub.
Solution: Generally speaking, if the tire makes abnormal noise, it means the tire is rubbing against the disc, that is, the disc brake is too tight or tilted slightly. Turn the red knob next to the disc brake slightly until it stops rubbing against the disc. You can also go to a specialty store to find a technician to adjust it.
2. The original pedals are ball pedals, which will make abnormal noises when water enters.
Solution: Better pedals are not expensive, you can buy them and replace them yourself.
3. For the FORMULA quick-release aluminum alloy disc brake hub, if the normal sound of the hub disappears or becomes uneven after water enters the hub, problems may occur in the hub transmission during riding, and in severe cases, locking may occur.
Solution: Pay attention to maintenance.
4. Some gears rubbed against the chain during riding.
Solution: Adjust the high and low limit bolts or adjust the knob next to the thumb dial. If you don't know how to adjust it, it is recommended to find someone who knows how to adjust it or go to a local store to adjust it.
5. The problem of 2 on 3 on the market.
Solution: Changing gears from 2 to 3 is actually not that serious. Changing gears from 2 to 3 is not as easy as many cars. If the car has this problem and finds it difficult to shift, tell the technician when picking up the car. It is usually easier. Experienced technicians can solve this problem well.
Baidu Encyclopedia-Merida Challenger 300
Baidu Encyclopedia-Merida Duke 600