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65Motorcycle Precision Measurements - Part 5
Torque is the amount of rotational or twisting force that can be exerted by an engine, instrument, or other rotating object. In the English measuring system, the common measurements or specifications are in...
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65Motorcycle Precision Measurements - Part 4
Normal procedure is to loosen the spark plugs one turn, then spin the engine over to blowout carbon at the inner surface of the plug before any compression reading is taken. After the dirt is blown away from...
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70Motorcycle Precision Measurements - Part 3
Micrometers, ranging in sizes from 1 inch to 4 inches capacity, comprise the set normally used by motorcycle mechanics. Large micrometers are also available of course. Measurement with a micrometer is based...
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65Motorcycle Precision Measurements - Part 2
A mechanic should consider the relationship of the size of fasteners to the parts they connect. Various sizes of fasteners, such as studs and bolts, are chosen for their ability to apply a certain force to...
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69Motorcycle Precision Measurements
Did you ever wonder why two identical bikes may perform so differently, even though both seem to be tuned identically? With the same timing, valve adjustment, gearing, jetting, and rider weight, why will one...
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72Motorcycle Suspension Geometry
A motorcycle's handling characteristics are very sensitive to several factors. Of course, the overall size and weight of the machine have the most pronounced effect on its handling. The ponderous touring...
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71Motorcycle Suspension System Maintenance - Part 3
Spring / Shock Details The telescopic shock absorber has an inner cylinder, an outer cylinder, piston, piston rod, spring mounts, and sometimes dust covers. In addition, a series of valves, passages, and...
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72Motorcycle Suspension System Maintenance - Part 2
Replacing Seals A fork seal is a part that must be replaced occasionally. It does a dirty, dusty, abrasive job, and eventually it just wears out. Fortunately, these seals are not very difficult to replace....
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69Motorcycle Suspension System Maintenance
Changing Fluid The front forks contain oil and, as you know, most oil needs changing occasionally. Several months of street riding or about 40 hours of dirt riding will usually contaminate the fork oil to...
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76Motorcycle Rear Suspension Systems
The rear suspension has had but two major changes in its evolution, but it turns out that the latter form has a myriad different forms. Hard Tail & Friends The hard-tail or rigid rear suspension was...
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