What is the cam on a motorcycle?
(1) The word cam refers to an eccentric circular disc. In a four-cycle engine, cams are used to open and close the intake and exhaust valves. The cams are fixed on a camshaft, which is connected via a chain to the crankshaft (thus the position of the cam is fixed in relation to the engine cycle).
Where is the cam on a motorcycle?
Its job is to open and close the engine’s intake and exhaust valves—like a person inhaling and exhaling. The cam can be in two locations: inboard or over-head.
What is the cam number?
What do camshaft numbers mean? – Quora. Most common specs for an engine would be for example. 210/218 at 0.551/0.556 at 113 degrees . The first two numbers are the degrees of opening being 210 for the intake and 218 degrees for the exhaust given normally at .
How does a Twin Cam engine work?
In a twin-cam engine, there are two camshafts inside the cylinder head, positioned above the cylinders. One camshaft is responsible for operating the intake valves and the other one operates the exhaust valves. The DOHC engine has several features unique to its design.
Are high lift cams reliable?
Designing a cam profile with more lift results in increased duration in the high-lift regions where cylinder heads flow the most air. Short duration cams with relatively high valve lift can provide excellent responsiveness, great torque, and good power. But high lift cams are less dependable.
What do you need to know about motorcycle cams?
This article will help guide you in making that selection. One of the most common errors when selecting cams is to over cam the engine. When selecting a cam you want to make sure it is ideal for the RPM range that you plan on operating your engine in. The basic function of cams is to open and close your intake and exhaust valves.
How does the camshaft work in a motorcycle engine?
The operation of the valves of the engine is dependent on the camshaft and its lobes as they are the one controlling the opening and closing of the valves along with the timing of it. The camshaft is the one rotating along with the crankshaft that is turning the engine, i.e. the piston moving up and down.
What should I look for in a Harley Davidson camshaft?
While there are no hard and fast rules for picking a cam for a specific application, some basic guidelines are worth considering. Keep in mind that performance camshafts are usually chosen for the basic purpose of producing more power from your engine. The three questions to answer before choosing a new cam for your Harley Davidson® motorcycle are:
How many camshafts does a 4 cylinder engine have?
An i4 (four-cylinder) SOHC engine has one camshaft, while a V6 or V8 SOHC engine has two. An i4 DOHC engine has two camshafts, while a V6 or V8 DOHC engine has four camshafts. Overhead-cam engines have three to five valves per cylinder, but usually two intake valves and two exhaust valves.
This article will help guide you in making that selection. One of the most common errors when selecting cams is to over cam the engine. When selecting a cam you want to make sure it is ideal for the RPM range that you plan on operating your engine in. The basic function of cams is to open and close your intake and exhaust valves.
The operation of the valves of the engine is dependent on the camshaft and its lobes as they are the one controlling the opening and closing of the valves along with the timing of it. The camshaft is the one rotating along with the crankshaft that is turning the engine, i.e. the piston moving up and down.
While there are no hard and fast rules for picking a cam for a specific application, some basic guidelines are worth considering. Keep in mind that performance camshafts are usually chosen for the basic purpose of producing more power from your engine. The three questions to answer before choosing a new cam for your Harley Davidson® motorcycle are:
Which is the oldest configuration of overhead camshaft engine?
The oldest configuration of overhead camshaft engine is the single overhead cam or single cam design. A SOHC engine has one camshaft per bank of cylinders, therefore a straight engine has a total of one camshaft.