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A wet sump design can be problematic in a racing car, as the large g force pulled by drivers going around corners causes the oil in the pan to slosh, gravitating away from the oil pick-up, briefly starving the system of oil and damaging the engine. However, on a motorcycle this difficulty does not arise, as a bike leans into corners and the oil ...
Several motorcycle models that use dry-sumps include; The classic British parallel twin motorcycles, such as BSA, Triumph and Norton, all used dry-sump lubrication. Traditionally, the oil tank was a remote item, but some late-model BSAs, and the Meriden Triumphs, used "oil-in-the-frame" designs.
The most common application of a petcock in an automobile is as a drain valve [1] for a radiator. [2] Historically, petcocks were used on gravity-feed fuel systems found on automobiles. With universal adoption of fuel pumps they have all but disappeared in that application.
An anti-drain valve was fitted into the timing cover on the Mk3 850s to stop oil draining from the oil tank to the sump when the bike was standing. [ 16 ] Using a concept designed by Doug Hele for the Triumph twins, the NVT R&D department, under Norman White, developed a balancing system for the Norton engine to resolve the low speed vibrations ...
In most steam engine designs there is a short time at the end of the return stroke of the piston when all the valves are shut and it is compressing any remaining steam. Water can be introduced from the boiler or in a cold engine, steam will condense to water on the cool walls of the cylinders and can potentially hydrolock an engine.
Breakdown of VIIs under shear is a concern in motorcycle applications, where the transmission may share lubricating oil with the motor. For this reason, motorcycle-specific oil is sometimes recommended. [18] The necessity of higher-priced motorcycle-specific oil has also been challenged by at least one consumer organization. [19]
Sight-glass lubricator. A needle valve adjusts the rate of flow, which may be seen as drops passing through the window beneath the glass reservoir.. A total-loss oiling system is an engine lubrication system whereby oil is introduced into the engine and then either burned or ejected overboard.
The Shovelhead engine is a motorcycle engine that was produced by Harley-Davidson from 1966 to 1984, built as a successor to the previous Panhead engine. When the engine was first produced, the Shovelhead had a shallower combustion chamber, larger valve drop for both intake and exhaust, better porting, and stronger valves and pistons.