Bringing this one back from the dead. Found the program last year, but it was usually screwed up and spewed nothing but garbage. Currently, it seems to be working, here are the results.
Bowling's Highway Dynamometer Calculator
Input Parameters Are the Following:
Transmission Ratio One = 1.50 to 1
Transmission Ratio Two = 3.80 to 1
Vehicle Weight = 2650 Lbs.
Coefficient of Drag = 0.350
Frontal Area = 18.00 Square Feet
Tire Pressure = 30 psi
Tire Diameter = 23.6 inches
Engine CID = 140
Engine Stroke = 3.700 inches
Carburetor Air Temp = 70 inches
Barometric Pressure = 30 inches Hg
Altitude = 800 feet
Percent Humidity = 50
MPH = 20 at 0.00 Seconds
MPH = 30 at 1.70 Seconds
MPH = 40 at 3.30 Seconds
MPH = 50 at 5.00 Seconds
MPH = 60 at 6.80 Seconds
MPH = 70 at 8.80 Seconds
MPH = 80 at 11.80 Seconds
Computation Results:
- - - - - - - - G - - - Road - Flywheel - Corrected Corrected
MPH RPM - Force - Horse - Horse - Horse - - - - -Torque
-------------------------------------------------------
20 1624 - 0.25 - - 35 - - - - 37 - - - -39 - - - - 126.4
25 2030 - 0.27 - - 48 - - - - 50 - - - -53 - - - - 137.3
30 2436 - 0.28 - - 60 - - - - 64 - - - -67 - - - - 144.9
35 2841 - 0.29 - - 71 - - - - 76 - - - -80 - - - - 147.7
40 3247 - 0.28 - - 79 - - - - 85 - - - -90 - - - - 145.5
45 3653 - 0.27 - - 85 - - - - 93 - - - -99 - - - - 141.7
50 4059 - 0.26 - - 91 - - - -102 - - - 108 - - - -139.2
55 4465 - 0.25 - - 98 - - - -111- - - -118 - - - -138.3
60 4871 - 0.25 - -106 - - - 122 - - - -129 - - - -139.1
65 5277 - 0.23 - -107 - - - 126 - - - -134 - - - -133.4
70 5683 - 0.20 - - 96 - - - -120 - - - -128 - - - -118.0
75 6089 - 0.15 - - 82 - - - -110 - - - -117 - - - -101.2
80 6495 - 0.11 - - 61 - - - -95 - - - - -102 - - - -82.4
Bruce Bowling
bowling@cebaf.govBowling Superior
I liftred the above from the SAOCA site. A guy there feels the corrections are not right, that the corrected hp should be close to 160. The car is a Sunbeam Alpine. Any comments?
Bill