With an 11-second car, we have 11-seconds to speed the wheel up. (Extremely averaged drivetrain losses) 5-speed front wheel drives (using a drivetrain loss of 13%) / (foot-lbs/sec) Constant = (62.42 / 550.221) Constant = 0.113491 . The P42DC has a maximum speed of 110 mph (177 km/h). For example, if your engine has a torque of 350 foot-pounds, then the horsepower would be 333 horsepower, at 5,000 RPM. The results of these calculato… HorsePower = 2.577 . Through this formula, we can calculate torque and horsepower and see that both are linked. Calculate : Torque : Speed : Horsepower : Submit. Horsepower (HP) = (Torque × Speed)/5252. Whilst this all sounds very very boring, it’s pretty important to understand this when choosing a tuner based on their previous results as not all dynos are equal, and not all flywheel calculations are the same If we were to make our example as a “poncelot” wheel, all the design parameters would be the same. Horsepower is a unit of measurement of power developed by engineer James Watt in the late 18 th century. The weight to be used should include the mass of the vehicle, the driver, the passenger, and other load. Note the use of a crank in this system as opposed to a cams or gears. What is the difference between hp and whp? About Horsepower Calculator: This horsepower calculator figures out the HP of your vehicle by using the definition of horsepower, time elapsed, trap speed, and RPM & torque method. Remember that shifting to a higher gear reduces torque multiplication. The blades would not be straight. We should assume an efficiency of 90%, so our hypothetical wheel will produce 61 horsepower or 45 kilowatts. Video. Engine HP vs Wheel HP. When you choose horsepower, this calculator will measure the approximate horsepower of an engine based on the torque of the engine (measured in foot-pounds) multiplied by the RPM of the engine, divided by 5,252 (conversion between foot-pounds and horsepower). The only thing that changes among the various designs is the speed or dimensions. The force (torque) is the same, but since the latter engine is turning twice as fast, it makes twice the horsepower. Traction horsepower in HEP mode decreases to a bare minimum of 2,525 horsepower (1,880 kW) when providing the full 800 kW HEP load to the train. This calculator gives the baseline horsepower and cubic feet per minute (cfm) that an engine will develop at its maximum rpm. Horsepower. Enter your 1/8th Mile ET/Speed and Weight of your car. You can't "see" this instinctively from the power curve. Engine RPM Calculation Basics. From "Stronger than a hundred men" by Reynolds . I am working on a project Thank you physicsforums . Horsepower formula is given as. Ask Question Asked 4 years, 9 months ago. Wheel, in the term “wheel horsepower and torque”, comes from the fact that they are values measured at the wheels of a vehicle. One of the most vital parameters of a car engine is its horsepower. Horsepower. ft/min. Back in the 18th century James Watt was developing steam engines and wanted to come up with a unit of measurement that would indicate the amount of workhorses the steam engine would replace. Since we have more time to push the bigger amount of energy into the wheel, it takes less horsepower than we might expect. Tractive effort is rated at 280.25 kN (63,000 lbf) of starting effort and 169 kN (38,000 lbf) of continuous effort at 38 mph (61.2 km/h) given wheel horsepower of 3,850 horsepower (2,870 kW). Constant = (Water Weight lbs.) Horsepower at wheels calculation. One metric horsepower, whether written as pferdestärke (PS), cheval-vapeur (CH), or cavallo vapore (CV), differs from an imperial or standard horsepower due to how it was calculated. To find out the problem, I logged the car OBD speed using Torque Pro app, calculated the Hp at wheels myself and … The difference is where the power is measured. Notes. Calculate your potential gross horsepower. US Customary Metric. Sometimes it's better to use (less torque X lower gear) than (more torque X next higher gear). brake horsepower per ton: wheel horsepower to brake horsepower: an engine with a brake horsepower of 20 bhp would have a rated horsepower of: how is brake horsepower calculated: convert kilowatts to brake horsepower: how to calculate brake horsepower of a pump: convert horsepower to brake horsepower From that a horsepower curve is calculated. But the values seems to be much less. 1 HorsePower = 746 Watts. If some other dynamometer company provides HP figures that will conform to that, they can use the term "True HP". Calculate the (free static) wheel radius from the tire size marking. Horsepower and Torque can be measured quite accurately though the app "Torque" - measurements taken are 'at the wheels', not at the flywheel Setting up. The Scottish engineer James Watt calculated the value of one horsepower by estimating the number of mill wheel rotations that a horse could complete in one hour. ‎Engine Horsepower Calculator are used to estimate the engine horsepower of your vehicle based on the weight, the time, and the speed to finish a quarter mile run. The only thing that changes among the various designs is the speed or efficiency. Where did the constant come from. Rx7man, it often is better to run past the peak power curve for optimum acceleration. Torque - Horsepower (hp) conversion calculator - online electrical engineering tool to perform conversion between electrical rotational moment of force (in-lb, ft-lb or Nm) & horsepower (watts). *Four-wheel drive cars lose between 20-25 percent of their quoted bhp figure because of the increased friction. True Horsepower - Effective HP scale - The I ... "True HP" is a term that signified that the rear wheel horsepower figure was derived from the actual power delivered to the drive roller - nothing added (except normal dyne system parasitic drag). One Horsepower equals to 33,000 lb. Ease of Use. From Torque OBD2 Wiki. Materials should always be a good grade of steel. The unit is a relic from our horse-powered past. Enter the Weight and HP for ET and MPH, Then Press 'Enter' Key MPH = 234 * (HP / Weight) ^ .3333 ET = 1353 / MPH Weight Horsepower 1. 20 gauge or thicker is good. Get it! A36 or B36 works very well. Most of the horsepower pushed into the wheel and stored is pushed in near the end, when acceleration is least. Automobile Performance Math Calculator designed for the road racer, drag racer or car enthusiast. Insert this widget code anywhere inside the body tag; Use the code as it is for proper working. Well, even so, using the first online calculator Google cared to provide, converting the 710 crank horsepower to wheel horsepower, we get a result … There is another Horsepower formula related to the weight given as. This formula is applied to calculate the speed or velocity at the end of the … Horsepower Calculator From 1/8th Mile Stats: Wallace Racing BACK to Calculators Todays date is 2/11/2021 These equations are for recreation only. The engine turning at 10,000 rpm makes 142.8 horsepower. E= Efficiency of the Wheel . BLOWER AND MOTOR CALCULATIONS By Norm Christopherson This section includes information on the sizing of motor pulleys, changing rpm and cfm of blowers, motor selection for blowers, belt length changes, and using fan laws for troubleshooting. The Horse Power Calculator below will calculate your approximate horsepower based on the vehicles weight, 1/4 mile time, and the 1/4 mile speed. So, our hypothetical wheel will produce 5.7 horsepower or 4.3 kilowatts. Torque - HP. Weight is as the car sits on the line: driver and gas in it. Once you have a uniform horsepower, you can test that car at different constants on the road and then compare them with cars that have similar or the same horsepower. 1/4 mile Menu Toggle. Not a substitude for actual testing. Calculate the wheel torque and force for a vehicle with the following parameters: engine torque, T e = 150 Nm; gearbox (1 st) gear ratio, i x = 4.171; final drive ratio, i 0 = 3.460; tire size marking 225/55R17; Step 1. Dewdrops on a spiderweb reveal the physics behind cell structures; By changing their shape, some bacteria can grow more resilient to antibiotics; New study investigates photonics for artificial intelligence and … Jump to navigation Jump to search. Active 2 years, 8 months ago. Racing calculators for determining horsepower, ET, MPH, converter slip, engine displacement and more. This calculation is used to match oversize tires with new ring and pinion gears to obtain the desired engine RPM at highway speed. Main Menu. Horsepower is a measure of the ability to move a certain amount of weight a certain distance, within a certain amount of time. The method for calculating the wheel radius is described in the article How to calculate wheel radius. I have used Torque Pro App for sometime in my Hyundai i10 Era (2011 model) and it gives me Horsepower at wheels. These calculations apply to “any” overshot waterwheel. Efficiency of a Waterwheel.85 to .90 Metal Waterwheel .70 for a Wooden Waterwheel.60 Poncelet Waterwheel ***** HorsePower = .1134 * 1.783 * 15 * .85. More About Calculating Horsepower. The wheels also speed up and slow down gradually. The calculator will spit out four different HP numbers. Engine RPM, or the speed at which the engine turns, can be calculated at any speed given the vehicle's tire size, axle ratio, and final transmission gear ratio. Use Calculator Pro’s 1/4 Mile Calculator in any location where you can get an Internet connection. Skip to content. In the same example above, the engine running at 5,000 rpm and producing 75 feet/pounds of torque is making 71.4 horsepower. In simple words, the calculator tells you how much power your vehicle is producing approximately by using different Hp methods. How I Calculate Horsepower from These information. Advanced info 1. Viewed 5k times 10. Although its original purpose was to compare the output of steam engines with the power of horses (hence its name), it has since been adopted as a unit of measurement for all sorts of engines used to power things such as vehicles, lawn mowers, boats, chainsaw, and airplanes. Rear Wheel HP is assuming a 10% drive train loss. In the automotive aftermarket world, HP and Torque gains from tuning and upgrade parts are usually measured with chassis dyno testing. Enter the Head Value: Enter Water Volume in Cubic Feet: Gross HP is: * Water-activated bellows in a forge from Romelli, 1588. These calculations apply to “any” low-head waterwheel. Answers and Replies Related Other Physics Topics News on Phys.org. A dyno can only accurately measure torque at the wheels, horsepower is a calculation of torque and RPM, and the flywheel horsepower figure is a calculation based on drivetrain losses. For all of the calculations simply fill in the yellow boxes and touch 'Calculate' The Horsepower Calculator will give HP from torque or torque from HP, HP with altitude change, Flywheel HP from Wheel HP, Wheel HP from Flywheel HP and Estimated Top Speed with Added HP. Home; 1/4 mile Menu Toggle.