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lincpimp
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Posts: 11,935
Join Date: Aug 2007
Location: Slidell, LA
06.23.2008, 01:57 AM

Here are the speed calc results for my proposed setup:

1st gear (crawl ratio)

Differential Ratio: 3.3076923076923075
Transmission Ratio: 5.076923076923077
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 16
Total Voltage: 14.8
Motor KV: 1668
Tire Diameter (inches): 5.75
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0.0114
Spur/Pinion Ratio: 2.88 : 1
Total Ratio: 48.27959 : 1
Tire Circumference (inches): 18.06 inches (458.83 mm)
Total Motor Speed: 24686.4 RPM
Vehicle Speed: 8.75 mph (14.05 km/h)
Estimated Adjusted Speed: 9 mph (14 km/h) - 1% loss

2nd gear (general bashing)

Differential Ratio: 3.3076923076923075
Transmission Ratio: 1.8333333333333334
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 16
Total Voltage: 14.8
Motor KV: 1668
Tire Diameter (inches): 5.75
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0.0114
Spur/Pinion Ratio: 2.88 : 1
Total Ratio: 17.43429 : 1
Tire Circumference (inches): 18.06 inches (458.83 mm)
Total Motor Speed: 24686.4 RPM
Vehicle Speed: 24.22 mph (38.91 km/h)
Estimated Adjusted Speed: 23 mph (38 km/h) - 3% loss
   
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