Gear Ratio Chart/Pinion Gear Selection - TC3 With 72T Spur
Internal Gear Ratio		2.5
Roll-out	8.246680716
Final Drive Ratios
Pinion	FDR (*:1)		Pinion	FDR (*:1)
15	12		21	8.571428571					FDR Starting Point		PinionGear
16	11.25		22	8.181818182			Novak Velociti 6.5R		8.0-8.5:1		21-22**
17	10.58823529		23	7.826086957			Novak SS4300		7.5:1		24**
18	10		24	7.5			**These are Novak's recommendations based on FDR
19	9.473684211		25	7.2
20	9		26	6.923076923
Efficiency Ratio1				1 Closest to 0.0 is ideal
Pinion	FDR:RO - Street			- Positive numbers reflect overgearing
15	-3.753319284			- Negative numbers reflect undergearing
16	-3.003319284
17	-2.341554578
18	-1.753319284
19	-1.227003495
20	-0.753319284
21	-0.324747856
22	0.064862534
23	0.420593759
24	0.746680716
25	1.046680716
26	1.323603793
Projected Top Speed (MPH)
P2K2 Pro		D6		V10 Spec 4		Method R		SS4300		SS5800		Velociti 6.5
6-cell	7-cell	6-cell	7-cell	6-cell	7-cell	6-cell	7-cell	6-cell	7-cell	6-cell	7-cell	6-cell
28.07308	32.75192	34.53011	40.28465	29.86177	34.83841	30.30464	35.35478	28.86338	33.67395	34.36117	40.08803	43.98229715
** Trinity P2K2 Pro Stock 27T = 34,314 RPM @ 8.4V  29,412 RPM @ 7.2V (4,085 RPM/V)
** Trinity D6 12x2 = 42,206 RPM @ 8.4V  36,177 RPM @ 7.2V  (5,025 RPM/V)
** LRP V10 Spec 4 14x2 = 36,500 RPM @ 8.4V  31,286 RPM @ 7.2V  (4,345 RPM/V)
** Orion Method R 15x2 = 37,041 RPM @ 8.4V  31,750 RPM @ 7.2V  (4,410 RPM/V)
** Novak SS4300 = 35,280 RPM @ 8.4V  30,240 RPM @ 7.2V  (4,200 RPM/V)
** Novak SS5800 = 42,000 RPM @ 8.4V  36,000 RPM @ 7.2V  (5,000 RPM/V)
** Novak Velociti 6.5 = 46,080 RPM @ 7.2V  (6,400 RPM/V)