Quote:
Originally Posted by suicideneil
Ah, I see. 50mph on 4s is a tall order for a truck that size- limit yourself to 40mph with only 4s, or step up to a 5/6s setup and gear accordingly- 50mph would be fine then, though the brand & quality of lipos is always key, as key as the gearing.
Its all good fun  |
I just wanna keep stock gearing is all on 4S. After all this, I don't think i'll ever touch 6S. I run SMC's 6000mAh 28C packs and soon their 9000mAh 28C's
So basically its showing me this with stock 44/20 gearing, 40 series Big Joe's and fully charged 4S at 4.2v
Differential Ratio: 3.3076923076923075
Transmission Ratio: 2.215277777777778
Other Ratio: 1
Spur Tooth Count: 44
Pinion Tooth Count: 20
Total Voltage: 16.8
Motor KV: 2200
Tire Diameter (inches): 6.4
Tire Ballooning (inches): .2
Motor Current Draw: 0
Motor coil Ω: 0.006
Spur/Pinion Ratio: 2.2 : 1
Total Ratio: 16.12041 : 1
Tire Circumference (inches): 21.36 inches (542.62 mm)
Total Motor Speed: 36960 RPM
Vehicle Speed: 46.38 mph (74.51 km/h)
Effective KV Value: 2200
KT constant: 0.61 oz-in/A
And the same with the nominal 3.7v charge on 4S
Differential Ratio: 3.3076923076923075
Transmission Ratio: 2.215277777777778
Other Ratio: 1
Spur Tooth Count: 44
Pinion Tooth Count: 20
Total Voltage: 14.8
Motor KV: 2200
Tire Diameter (inches): 6.4
Tire Ballooning (inches): .2
Motor Current Draw: 0
Motor coil Ω: 0.006
Spur/Pinion Ratio: 2.2 : 1
Total Ratio: 16.12041 : 1
Tire Circumference (inches): 21.36 inches (542.62 mm)
Total Motor Speed: 32560 RPM
Vehicle Speed: 40.86 mph (65.64 km/h)
Effective KV Value: 2200
KT constant: 0.61 oz-in/A
Looks safe to me