timing belt or chain drive

A timing belt is made of rubber or similar flexible substance. Timing belts wear out under normal use, and must be replaced as normal wear items. This is especially important if the engine is the type where the valves and piston can occupy the same space. In order to ensure that the valves and pistons do not occupy the same space at the same time, the timing belt must be intact. If one fails catastrophically, you have the probability of bent valve heads from contact with the piston. Then you not only need a new timing belt, but a rebuilt engine head.

A timing chain, on the other hand, usually runs through an oil bath, and does not need routine maintenance, or repair. It performs the same function, but is not a normal wear item. Chain driven overhead cams are found on higher quality engines, timing belts on lower quality engines.

For industrial drives, timing belts and drive chains do the same thing. Tension must be adjusted to keep chains from wearing through chain guards. Belts usually do not require as much attention and are quieter while running. However if they do get too loose they will tear the teeth off the belt and need replacing. Chains are a little more forgiving when out of tolerance. They also work well with heavy duty gear reducers as they can be attained with multiple links for double or triple sprockets.

Depending on what your requiring, both have their separate appealing attributes.

Sandrro lokhande No matter the application a belt consumes less power to function than a chain. This is why high performance engines use them in place of a chain. Anytime you reduce mass it has a considerable affect on the ability to quickly change speed. You have a larger selection of materials that you can use reliably with a belt. A belt is more forgiving to stretch than a chain in a critical timing situation. There is less noise with a belt. Its important to select the right construction in both belt and chain for the application. In engineering or re-engineering a design it is imperative to do frequent checks for suitability for the application. Jerrell

You can see the words of- Mark Twain

"Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover." -- Mark Twain

I think if I have CR4 people in my sail, I will be never disappointed.

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