| Quick Change Quick Change Gears Page 22 |
Page 22 |
Gear Ratios for 10 Spline Gears 
All gear sets are precision machined from SAE 8620 certified steel.
| Gear
4.11 Axle Ratio
Spur No.
Spur
4.86 Axle Ratio
Set (9-37 Teeth) Ratio Of Ratio (7-34 Teeth) No. High Low Teeth Low High |
|
01 4.11
4.11 1.00
21/21 1.00
4.86 4.86 02 4.26 3.96 1.03 27/28 0.96 4.68 5.04 05 4.28 3.95 1.04 24/25 0.96 4.66 5.07 |
| 15
4.32 3.91
1.05 19/20
0.95
4.63 5.10 26 4.41 3.83 1.07 27/29 0.93 4.52 5.23 06 4.46 3.78 1.08 23/25 0.92 4.47 5.28 |
| 25
4.52 3.74
1.10 20/22
0.90
4.42 5.35 12 4.58 3.68 1.11 26/29 0.89 4.36 5.42 07 4.64 3.63 1.13 23/26 0.88 4.30 5.49 |
| 07A 4.69
3.58 1.14
21/24 0.87
4.23 5.54 17 4.76 3.54 1.15 26/30 0.86 4.19 5.64 17A 4.80 3.52 1.16 24/28 0.85 4.17 5.67 |
| 08A 4.82
3.50 1.17
23/27 0.85
4.14 5.71 08 4.85 3.48 1.18 22/26 0.84 4.11 5.75 19 4.89 3.45 1.19 21/25 0.84 4.08 5.78 |
| 09A 4.93
3.42 1.20
25/30 0.83
4.05 5.83 09 4.97 3.39 1.21 19/23 0.82 4.01 5.88 11 5.04 3.35 1.22 22/27 0.81 3.96 5.97 |
| 03
5.10 3.31
1.24 25/31
0.80
3.92 6.03 13 5.14 3.29 1.25 20/25 0.80 3.89 6.08 18 5.18 3.26 1.26 23/29 0.79 3.85 6.13 |
| 18A 5.23
3.23 1.27
22/28 0.79
3.82 6.19 04A 5.26 3.21 1.28 18/23 0.78 3.80 6.21 04 5.31 3.18 1.29 24/31 0.77 3.76 6.28 |
| 20
5.34 3.16
1.30 20/26
0.76
3.75 6.32 22 5.41 3.12 1.32 19/25 0.76 3.69 6.39 16 5.48 3.08 1.33 18/24 0.75 3.65 6.48 |
| 10
5.56 3.04
1.35 17/23
0.73
3.59 6.58 34 5.68 2.98 1.37 21/29 0.72 3.52 6.71 14 5.72 2.95 1.39 23/32 0.71 3.50 6.76 |
| 14A 5.76
2.93 1.40
20/28 0.71
3.47 6.81 35 5.80 2.91 1.41 17/24 0.70 3.44 6.86 32 5.85 2.89 1.42 19/27 0.70 3.42 6.90 |
| 32A 5.89
2.87 1.43
23/33 0.70
3.39 6.97 24 5.96 2.83 1.45 20/29 0.69 3.35 7.04 36 6.04 2.80 1.47 17/25 0.68 3.30 7.15 |
| 37
6.07 2.78
1.48 21/31
0.67
3.29 7.19 23 6.17 2.74 1.50 22/33 0.67 3.24 7.29 21 6.27 2.70 1.52 19/29 0.65 3.20 7.42 |
| 27
6.35 2.66
1.54 22/34
0.64
3.15 7.52 43 6.42 2.63 1.56 16/25 0.64 3.11 7.59 28 6.49 2.60 1.57 19/30 0.63 3.08 7.68 |
| 29
6.58 2.57
1.59 15/24
0.62
3.04 7.78 39 6.62 2.55 1.61 18/29 0.62 3.02 7.83 30 6.68 2.53 1.62 16/26 0.61 2.99 7.91 |
| 40
6.71 2.52
1.63 19/31
0.61
2.98 7.93 41 6.77 2.50 1.65 17/28 0.61 2.95 8.00 31 6.85 2.47 1.67 21/35 0.60 2.92 8.10 |
|
33 6.99
2.42 1.70
20/34 0.58
2.85 8.26 31A 7.05 2.40 1.71 21/36 0.58 2.84 8.34 30A 7.12 2.37 1.73 15/26 0.57 2.80 8.42 |
Handy Formulas:
To Determine Final Drive: (# Teeth Top Gear) ÷ (#Teeth Bottom Gear) X R&P Ratio = Final Drive EX. 26 ÷ 23 x 4.86 = 5.49
To Determine Gear RPM Change: (RPM) ÷ (Gear Ratio) x (New Ratio) = (New RPM) EX. 8000 ÷ 6.58 x 6.35 = 7720
Plastic
Gear Tote  Helps keep gear sets clean and organized.
|
Gear
Oil 
Specially formulated semi-synthetic 80-90-140 gear oil with moly. Recommended for all racing applications.
|
Gear Cover Gaskets
Stops those nuisance gear cover drips. Buy a 10 pack and save $$$.
|
