40 Diametral Pitch (or 2.07 mm) Timing Belts. SDP/SI offers a wide selection of standardized mechanical components including 40 D.P. (2.07 mm) Pitch timing belts and pulleys. The timing belts are available off-the-shelf in 9 standard inch and metric widths. Special widths can be cut to size from sleeves available from stock. The V-belt drive system operates a bit more efficiently and quietly than the flat belt, is able to carry slightly higher loads, and is less prone to slipping than the flat belt drives are. In comparing the two drive systems, flat belts drives are usually the lower cost drive option when compared to V-belt profile drives because the flat belt Chapter 3: Failure of a Timing Belt. The distance or time periods for the replacement of the timing belts are recommended by the manufacturer. Failure to replace a timing belt in time will result in a complete breakdown or catastrophic failure of an engine, especially in interference engines. The velocity at which a belt travels may be expressed as. v = π d m n m / 12 (2) where. v = velocity of belt (ft/min) n m = revolutions motor (rpm) - or alternatively in metric units: v b = π d m n m / 60 (2b) where . v b = velocity of belt (m/s) d mb = diameter motor pulley (m) However, they are much less expensive to replace than a timing chain, although a timing chain goes out much rarer. Pros of timing belts: Lighter and quieter than a timing chain. Costs less to replace. Cons of timing belts. Deteriorates much more commonly than a timing chain. Requires occasional changes. What is up engine heads, today we will be taking a detailed look at timing belts and timing chains. We will compare one with the other and dive deep into the dk2BenX.

timing belt vs v belt