Start Small Gas Engine Measurement Tools Mr Smith
- Slides: 23
Start….
“Small Gas Engine Measurement Tools” Mr. Smith Transportation
“Lesson Overview” • • • Summary Straight Measurement Tools Feeler Gauges Calipers Micrometers Telescoping Gauge more. . .
“Overview Continued” • • Volume Measurement Tools Weight Measurement Tools Dial Indicator Torque Wrenches Plastigauge Multimeter Horsepower Measurement Tools Spark Plug Gapping Gauge
“Summary” Besides needing tools to increase the gripping, cutting, turning power of the human hand, we also require them to enhance our judgement of the eye and brain. We must be able to make accurate comparisons between different sizes of things and spaces. We also must be able to say accurately just how large an object or space is or how much something weighs. This is especially important when working with engines because a few thousandths of an inch difference between two measurements can have a serious effect on engine performance.
Straight Measurement tools A. Types - Common tape measure, straight rulers B. Uses - Flat surfaces or along straight lines C. Advantages - Accurate - Cheap more. . .
Straight Measurement Tools D. Limitations - Only for straight or flat surfaces
Feeler Gauges A. Types - Blade Type, Wire Type, and Go, no - go B. Uses - For gaps C. Advantages - Accurate, cheap D. Limitations - Used only for gaps
Calipers 1. Transfer Type A. Uses - Transfers cylindrical or flat measurement to ruler B. Advantages - Handy for quick comparing, cheap C. Limitations - no graduation, not a measuring device
Calipers 2. Vernier Calipers A. Uses - For precision measurement inside and outside cylindrical or flat objects B. Advantages - Measures to a thousandth of an inch C. Limitations - Expensive, more for machine shop use
Micrometers A. Types - Inside, outside B. Uses - Precision measurement of cylindrical or flat objects C. Advantages - More accurate than calipers more. . .
Micrometers D. Limitations - Expensive, fragile
Telescoping Gauge A. Uses - Transfers cylindrical measurement to micrometer B. Advantages - Small, handy C. Limitations - No graduations, not a measuring device
Volume Measurement Tools A. Types - Graduated cylinders, flasks, cups B. Uses - For finding volume, e. g. , the amount of liquid poured in container C. Advantages - Only way to measure irregular objects D. Limitations - Only small objects may be measured
Weight Measurement Tools A. Types - Scales, balances B. Uses - Necessary to measure weight C. Advantages - Portable or fixed D. Limitations - Some are expensive
Dial Indicator A. Types - Regular, digital B. Uses - Measures the back and forth movement of parts more. . .
Dial Indicators C. Advantages - Measures to the thousandth of an inch D. Limitations - Expensive, fragile
Torque Wrenches A. Types - Foot lbs. or inch lbs. B. Uses - Measure force applied to nuts and bolts C. Advantages - Accurate, prevents damage D. Limitations - Expensive, fragile
Plastigauge A. Uses - Measures clearance between bearing and journal B. Advantages - Available in different sizes, accurate, cheap C. Limitations - Only measures clearances up to nine thousandths of an inch
Multimeter A. Types - Digital, analog B. Uses - Contains, voltmeter, ammeter, and ohmmeter - Compact, accurate u C. Advantages A V
Horsepower Measurement Tools A. Types - Prony brake, dynamometer B. Uses - RPM and load measuring device C. Advantages - Accurate D. Limitations - Expensive, need formula to calculate horsepower
Spark Plug Gapping Gauge A. Types - Wire, solid metal B. Uses 25 28 30 - Measure and adjust the ground electrode of plug C. Advantages 32 35 40 - Cheap, handy, accurate
The End
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