Tuesday, September 2, 2008

Tips from Shimano

What is the best way to clean the Shimano chain on my mountain bike?

Due to the harsher conditions associated with off-road riding, it is recommended that the chain be sprayed with a citrus based degreaser and wiped clean making sure all of the dirt and grime is removed from the outer faces of the plates. It is recommended that the chain is dry before applying a drop of lubricant to each link. Wipe off any excess lubricant before riding to prevent the accumulation of dirt and sand.

How do I know when to change my chain?

There are a number of tools on the market, including the Shimano TL-CN41, that will allow you to check for wear on your chain by measuring the amount of stretch. You will want to change your chain between 0.075mm and 0.1mm of stretch.
What should I use to clean my disc brakes?
Isopropyl Alcohol is the best choice for cleaning Shimano disc brakes. It cuts through the mineral oil, grime, brake dust, and other foreign matter, dries quickly and leaves no residue

How can I prevent my disc rotors from rubbing while I'm coasting or pedaling?
In most cases, this scenario is due to incorrect installation to the frame/fork or a lack of maintenance. Check to see if the calipers are properly bled and positioned correctly, the rotors are perfectly true and frame's suspension links are all in good condition. It is highly recommended that the mounting tabs on the frame and fork have been properly spot faced to ensure accurate alignment with the rotor. Because bicycles are designed to be light as possible, it is unavoidable to have small flex in the frames and wheels while riding. This small flex may be enough to make your rotor rub when you're coasting or pedaling. Depending on the riding conditions, disc brake calipers need cleaning and maintenance on a regular basis. Wet and muddy conditions will require a more frequent service interval than dry riding conditions. Also, inspect the disc brake pads for wear. Replace the pads when the pad material has worn to a thickness of 0.5mm or less.

What are the differences between the metal and resin disc brake pad compounds?
Metallic pad compounds offer greater braking power and more resistance to heat-induced fade.

Resin pad compounds offer better modulation and less noise.

How interchangeable are Shimano's hydraulic disc brake systems?
All Shimano hydraulic disc brake systems are interchangeable. Depending on the model of the brake lever and caliper, the connections may differ and could require replacing of the hose and/or the connection fitting, but the brake levers and calipers are fully compatible.

How do Hollowtech II cranks fit the variety of mountain bikes available?
By using the supplied spacers in the correct positions, Hollowtech II cranks are able to adapt to both 68 or 73mm bottom bracket shells with or without an E-type derailleur.

Can I use other brands of disc brakes with the Shimano Center Lock rotor system?
Shimano doesn't approve other brands of disc brakes to be used in conjunction with our Center Lock rotors. For best performance and safety Center Lock rotors should only be used with Shimano disc brake calipers.

Why should I use a torque wrench when installing Shimano components?
By properly using a Torque Wrench to check the bolts during assembly and follow up service you can be sure that the bolts have been tightened correctly. In some cases to tight or too loose will have a dramatic effect on the performance and safety of the components.

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