var g = parseFloat(form.cylinders.value) } { } form.stroke9.value = ""; Watts to mechanic / hydraulic horsepower. Quality tools are an investment that will last a lifetime if properly cared for. function findmph5(form) if(x==7) metres squared, grams, moles, feet per second, and many more! //-->, ©2020 DragTimes - Disclaimer - Contact Us. ps to dyne centimeter/second The answer is 1.0142777265087. Engine Horsepower Calculator. form.aspect11.value = findaspect11(form); } form.heads.value = ""; You can view more details on each measurement unit: return false; } This rich Internet app uses the quarter mile distance or 400 meter track. form.mph2.value = ""; ›› Definition: Horsepower. 1 watt is equal to 0.0013596216173039 ps, or 0.0013404825737265 hp. return formatvalue(1353 / form.et2.value, form.rsize); Example: A four cycle engine rated at 123 CC will produce approximately 4 horsepower. newValue = inValue computeForm(input.form); var n8 = 0; else { var num = 0 + str How To Calculate Your Horsepower. } if (strin.length <= rsize) return strin; return formatvalue((form.newheight12.value / form.oldheight12.value) * form.origratio12.value, form.rsize); if (num < min || max < num) { form.tire5.value = ""; A four cycle engine produces power only on the second revolution 32.5 cc is used in the calculation to calculate working force hp. vehicle; its condition, tuning, fuel and modifications. Engine CC. function clearform(form, x) For instance, if you have a 64cc chamber and a head gasket displacement of 9.2 ccs, then in the "Head" ccs field enter "73.2". Convert pferdestarke to horsepower [electric]. function findstrtcarb13(form) } vehicle weight including driver, in the form below. function computeForm(form) { { { form.diameter10.value = ""; One mechanic or hydraulic horsepower is equal to 745.699872 watts: 1 hp(I) = 745.699872 W. So the power conversion of watts to horsepower is given by: P (hp) = P (W) / 745.699872. google_ad_height = 15; var nines = "999999999999999999999999"; if (form.quarter3.value) To calculate the horsepower of a car, start by finding the engine’s torque value and engine speed in the owner’s manual. as English units, currency, and other data. Again, this table is not if (x==9) return formatvalue((form.rear7.value * form.mph7.value * 336.136 * form.trans7.value * ((1 + (form.conv7.value / 100)))) / (form.tire7.value), form.rsize); { It takes a certain amount of power to make the rotor go around at a certain speed.If you put a car into neutral, and then floor the engine while it is attached to a dynamometer, the device puts a load on the engine and sees whether it can turn the load or how fast it can turn the load around. { if(x==9) } Note that rounding errors may occur, so always check the results. Horsepower is not recognized in the International System of Units (SI); SI uses a measurement of power (a rate at which energy is generated or used) called a watt, which is named after James Watt. { Your car may be a little quicker } google_ad_client = "pub-2120652264777055"; } Pre-programmed formulas for engine building and track tuning. } } function findet2(form) function findquarter3(form) ps or ps to pound square foot/cubic second function findconv4(form) exact, but simply a tool for estimating. return formatvalue((form.rpm5.value * form.tire5.value) / (form.rear5.value * 336.136 * form.trans5.value * ((1 + (form.conv5.value / 100)))), form.rsize); function formatvalue(input, rsize) Do you have a high performance car, motorcycle, truck or vehicle, built a new engine, performed a tune up or installed a performance part? if(x==2) conversion calculator for all types of measurement units. form.weight1.value = ""; form.trans5.value = ""; Horsepower is a way to measure the power output of an engine or motor. alert(msg); } form.hp0.value = findhp0(form); This tool is a very accurate tool and can be tremendously helpful. form.bore9.value = ""; form.widthin10.value = ""; function findeffratio12(form) form.conv4.value = ""; Watts to electrical horsepower { if (strin.indexOf("e") != -1 || return newValue; vehicle weight. } function RoundUp(inValue) { Predict Elapsed Time and top speed for 1/4 mile or 1/8 mile runs. form.height10.value = ""; This table is useful We assume you are converting between pferdestarke and horsepower [electric]. Rated HP to Calculate. When you choose torque, this calculator will measure the approximate torque of an engine based on the horsepower, multiplied by 5,252 (conversion between foot-pounds and horsepower), divided by the RPM of the engine. Example: An engine rated at 2500 CC will produce approximately 152 horsepower. form.conv8.value = ""; return true; if (x==3) ps to million Btu/hour This calculator is based on for every 32.5 cubic centimeters, one horsepower is produced. } { if(x==11) Drag Racing Calculators,Calculators to find 1/4 mile ET and MPH, CID,Piston Speed,gear ratio,carburetor size,margin of victory,Engine calculator, Calculates relative horsepower, air density, density altitude, virtual temperature, actual air pressure, vapor pressure and dyno correction factor and more. { return formatvalue(form.rpm13.value * form.cid13.value * .000246, form.rsize); } You can use this for example to see how big your stroker engine will actually be as far as displacement, based on different bore sizes or crank strokes. function findmph2(form) } form.mph7.value = ""; if(x==8) for (var i = 0; i < str.length; i++) { var str = input.value; Try out this calculator get a rough estimate of horsepower. var d = 0; } Please feel free to use these tools, bookmark this page for future use, and post links to this page for others to use. Brake Horsepower Calculator Brake Horsepower, also in short known as BHP is the amount of work by done by an engine and how fast the engine could work. n5 = a * a * b * .7854 * g newValue = newValue * 100 form.tire8.value = findtire8(form); NOTE: Please keep in mind Ratio Calculator. var g = 0; { This calculator gives an form.rpm7.value = ""; To use this horsepower calculator enter the mph trap speed at the 1/4 mile mark from one of your dragstrip ET slips. var newValue; { return formatvalue((form.oldheight12.value / form.newheight12.value) * form.origratio12.value, form.rsize); n6 = n5 * 16.386 / g Roll your pointer to the left of the table to see typical values. ›› Metric conversions and more. Wallace Racing - ET/MPH/HP Calculator Weight is as the car sits on the line: driver and gas in it. form.mph5.value = findmph5(form); { return formatvalue((((form.rpm4.value * form.tire4.value) / (form.rear4.value * form.trans4.value * form.mph4.value *336))-1) * 100, form.rsize); { be. form.displ9.value = ""; } { function findracecarb13(form) form.et2.value = ""; { var d = parseFloat(form.gt.value); ps to gram-force centimeter/minute } var n7 = 0; Building any engine requires a selection of precision measurement tools. return; } if (!checkNumber(form.bore, .00001, 99, "Bore") || !checkNumber(form.stroke, .0001, 99, " Stroke") || !checkNumber(form.heads, 0, 200, "Heads") || !checkNumber(form.gt, .0001, 1, "Gasket Thickness") || !checkNumber(form.dt, .0001, 1, "Deck Thickness") || !checkNumber(form.cylinders, 1, 12, "Number of Cylinders")) { } { form.trans8.value = ""; form.eighth3.value = findeighth3(form); } var e = parseFloat(form.dt.value); We strongly endorse this product if you are serious about improving your vehicles performance and your success at the track. Estimating engine power. { { … return; purposes and your actual times will vary depending on climate, each return formatvalue((form.rear8.value * form.mph8.value * 336.136 * form.trans8.value * ((1 + (form.conv8.value / 100)))) / (form.rpm8.value), form.rsize); For this calculator, you have the option to use the Elapsed Time Method, the Trap Speed Method, or the RPM & Torque Method. The electrical horsepower is used by the electrical industry for electrical machines and is defined to be exactly 746 W (at 100% efficiency). function findhp0(form) form.rpm6.value = ""; Type in your own numbers in the form to convert the units! The following two calculators can be used to estimate the engine horsepower of a vehicle based on the weight of the vehicle, elapsed time, and speed used to finish a quarter mile run. form.height11.value = ""; if(x==10) } form.rear8.value = ""; return formatvalue((parseFloat(form.eighth3.value) + .22) / .655, form.rsize + 3); } In other words, we can say it is the amount of watts generated at the engine's crankshaft. if (input.value != null && input.value.length != 0) } form.mph6.value = ""; } form.conv5.value = ""; Estimate horsepower output from any engine type (4-stroke, 2-stroke, any fuel type, turbo, blower, Wankel, etc.). form.quarter3.value = ""; to use the unit converter. if (x==12) Because 1 horsepower is equal to 746 watts, the formula above will include a division by 746 to complete the conversion. //728x15, tools red form.ratio.value = 0; } input.value = "" + eval(input.value); n8 = n7 / n4 } var b = 0; if(x==6) function findwidthin10(form) { return formatvalue(form.widthmm10.value / 25.4, form.rsize); var n4 = 0; form.widthin10.value = findwidthin10(form); return formatvalue(parseFloat(form.widthmm10.value / 25.4 * form.aspect10.value / 100 * 2) + parseFloat(form.diameter10.value), form.rsize); return formatvalue(Math.pow(form.bore9.value / 2, 2) * 3.14159 * form.stroke9.value * form.cyls9.value, form.rsize); function findmph1(form) Elapsed time is the duration a vehicle takes to complete a run in a competition. form.mph4.value = ""; } var fltin = parseFloat(strin); var invalid = "**************************"; Example. return formatvalue(form.widthin11.value * 25.4, form.rsize); { if (x==7) } Examples include mm, form.conv7.value = ""; function clearvalue(name) Please enable Javascript { Analyze/inspect calculations and results in solution, charts and graphs. form.aspect11.value = ""; } { form.et1.value = ""; form.strtcarb13.value = findstrtcarb13(form); var f = 0; function finddispl9(form) You can find metric conversion tables for SI units, as well symbols, abbreviations, or full names for units of length, { form.widthmm11.value = findwidthmm11(form); if(x==0) form.rpm7.value = findrpm7(form); } { } if ((ch < "0" || "9" < ch) && ch != '.') form.mph5.value = ""; } function checkNumber(input, min, max, msg) { Use this page to learn how to convert between pferdestarkes and horsepower. function findeqratio12(form) function findaspect11(form) form.strtcarb13.value = ""; This tool can also be used to find the final engine size based on any bore size, crankshaft stroke and number of cylinders. { } var strin = "" + input; } form.trans6.value = ""; form.effratio12.value = ""; DragTimes App This calculator will estimate the amount of horsepower a car is generating at the flywheel from the car's 1/4 mile time, trap speed and weight. } form.widthmm11.value = ""; form.cid13.value = ""; { form.height10.value = findheight10(form); form.newheight12.value = ""; On the spot calculations of how engine modifications effect the vehicle setup.
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