Speedo Seats & Luggage- racks Frame Chassis Suspension Forktubes Wheels Brake Fenders Gastanks Motorparts Gaskets Intake Transmission & Driveline Exhaust Electrical & Lights Handlebars, Cables & Mirrors Oil tanks Oil & Chemicals Fasteners Windshields Forward controls, Footpegs Miscellaneous FORTUNES IN FORMULAS 1831 AFTERMARKET PARTS & ACCESSORIES FOR CUSTOM MOTORCYCLES / MOTORCYCLESTOREHOUSE.COM SURFACE AREA - INCHES TO METRIC & METRIC TO INCHES Inch² x 6.45 = cm² cm² : 6.45 = Inch² Feet² x 929 = cm² cm² : 929 = Feet² Feet² x 0.0929 = m² m² : 0.0929 = Feet² Yard² x 0.836 = m² m² : 0.836 = Feet² Acre x 4046.8564 = m² m² : 4046.8564 = Acre Acre x 0.4046 = Hectare Hectare : 2.4711 = Acre FLUIDS Gallon (US) x 3.7854 = Liter Quart (US) x 0.9464 = Liter Fluid ounce x 29.57 = Cubic centimeter (cc) Imperial Pints x 0.568 = Liter POWER Horsepower (hp) x 0.7457 = Kilowatt (kw) SPEED Miles x 1.609344 = Kilometers TEMPERATURE Degrees Celsius (°C x 1.8) + 32 = Degrees Fahrenheit (°F) Degrees Fahrenheit (°F -32) x 0.56 = Degrees Celsius (°C) ENGINE CAPACITY Cubic inches (cu.i) x 16.38807 = Cubic centimeter (cc) Cubic centimeter (cc) x 0.06102 = Cubic inches (cu.i) PRESSURE PSI = Pound-force per square inch atm = Atmospheres kPa = Kilopascal PSI x 0.0689 = Bar PSI x 0.0698 = atm Bar x 14.5038 = PSI Bar x 1.013 = atm atm x 0.987 = Bar kPa x 0.01 = Bar FUEL CONSUMPTION Miles per Gallon (mpg) x 0.425 = Kilometer per Liter (km/l) LENGTHS / DISTANCE Inch (in) x 25.4 = Milimeter (mm) Inch (in) x 2.54 = Centimeter (cm) Foot (ft) x 0.305 = Meter (m) Yards (yd) x 0.9144 = Meter (m) Miles (mi) x 1.609344 = Kilometer (km) WEIGHTS Pounds (lb) x 453.6 = Grams (gr) Pounds (lb) x 0.4536 = Kilograms (kg) Ounces (oz) x 28.3495 = Grams (gr) TORQUE Pounds-force inches x 1.152 = Kilogram-force centimeter (kgf cm; kg cm) Pounds-force inches x 0.113 = Newton Meter (nm) Pounds-force inches x 0.083 = Pounds-force feet (ft-lbs) Pounds-force feet (ft-lbs) x 0.138 = Kilogram-force centimeter (kgf cm; kg cm) Pounds-force feet (ft-lbs) x 1.356 = Newton meter (nm) Newton meter (nm) x 0.102 = Kilogram-force meter (kgf m; kg m) Kilogram-force meter (kgf m; kg m) x 9.804 = Newton meter (nm) Obviously, it's a good thing to know what you're doing or what you're talking about. Knowledge is a key factor and may even help save a fortune, or your credibility, when wrenching or ordering parts. Following is a listing of most used calculations and conversion factors. They may be helpful to you when working around Harley-Davidson® and custom motorcycles. DISPLACEMENT Bore" x Bore" x Stroke" x 1.5708 = Displacement in Cubic Inches. Bore" x Bore" x Stroke" x 25.744019 = Displacement in Cubic Centimeters Example: A stock 1340cc Evolution Big Twin has a bore of 3-1/2" and stroke of 4-1/4". Formula: 3.5" x 3.5" x 4.25" x 1.5708 = 81.78 Cu.I. 3.5" x 3.5" x 4.25" x 25.744019 = 1340.29 cc AREA OF A CIRCLE The radius is the diameter of a circle divided in half. Radius x Radius x 3.1416 = Area of a circle Example: A stock 1340cc Evolution Big Twin has a bore of 3 1/2" Formula: 1.75" x 1.75" x 3.1416 = 9.62 Inch² 44.45 mm x 44.45 mm x 3.1416 = 6207.18 mm² (62.0718 cm²) HEAD/BASE GASKET VOLUME Bore x bore x 12.87 x compressed gasket thickness = Gasket volume in cubic centimeters Example: A head gasket has a thickness of 0.045", bore is 3 5/8" Formula: 3.625" x 3.625" x 12.87 x .045" = 7.61 cc ELECTRICAL: AMPERAGE, WATT & VOLTS Electrical current can be important to prevent a melt down within the electrical wiring of the motorcycle, or to calculate what fuse you will need for a certain application. Watt devided by Volt = Amp Amp multiplied by Volt = Watt Watt devided by Amp = Volt COMPRESSION RATIO Cylinder displacement + combustion chamber volume, devided by combustion chamber volume. Example: A 1340 cc Big Twin has 670 cc per cylinder. Combustion chamber volume is 72 cc. Formula: 670 + 72 = 742 : 72 = 10.3:1 Compression Ratio (CR) Note: Do not forget to include gasket thickness and valve pockets in the piston when calculating CR. CC-ing the heads (filling with fluid after heads have been installed and piston fluid tight sealed) will give the most accurate numbers. CONVERSION FACTORS FORMULAS
RkJQdWJsaXNoZXIy ODQ0NDEw