Gear Ratio Chart/Pinion Gear Selection - Evader ST/BX With 88T
Spur |
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Internal
Gear Ratio |
2.66 |
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Off-Road Tires |
Street Tires |
Foam Tires |
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* Off-road calcs = Gladiator II tires w/ 4.25"
diameter |
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Roll-out |
13.35176878 |
10.99557429 |
9.424777961 |
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* Street calcs = Street Hawg II or Road Hawg II
tires w/ 3.5" diameter |
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* Foam calcs = Generic foam tires w/ 3.0"
diameter |
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Final Drive Ratios |
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Pinion |
FDR (*:1) |
Pinion |
FDR (*:1) |
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15 |
15.60533333 |
21 |
11.14666667 |
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FDR Starting
Point |
Pinion |
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16 |
14.63 |
22 |
10.64 |
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Novak Velociti
6.5R |
12.2-12.7:1 |
18-20** |
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17 |
13.76941176 |
23 |
10.1773913 |
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Novak SS5800 |
12.3:1 |
17-18** |
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18 |
13.00444444 |
24 |
9.753333333 |
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Novak SS4300 |
12.5:1 |
18-19** |
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19 |
12.32 |
25 |
9.3632 |
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**These are Novak's recommendations based on FDR |
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20 |
11.704 |
26 |
9.003076923 |
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Efficiency Ratio1 |
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1 Closest to 0.0 is
ideal |
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Pinion |
FDR:RO - Off-Road |
Pinion |
FDR:RO -
Street |
Pinion |
FDR:RO - Foam |
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- Positive
numbers reflect overgearing |
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15 |
-2.253564556 |
15 |
-4.609759046 |
15 |
-6.180555373 |
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- Negative
numbers reflect undergearing |
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16 |
-1.278231222 |
16 |
-3.634425712 |
16 |
-5.205222039 |
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17 |
-0.417642987 |
17 |
-2.773837477 |
17 |
-4.344633804 |
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18 |
0.347324333 |
18 |
-2.008870157 |
18 |
-3.579666484 |
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19 |
1.031768778 |
19 |
-1.324425712 |
19 |
-2.895222039 |
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20 |
1.647768778 |
20 |
-0.708425712 |
20 |
-2.279222039 |
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21 |
2.205102111 |
21 |
-0.151092379 |
21 |
-1.721888706 |
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22 |
2.711768778 |
22 |
0.355574288 |
22 |
-1.215222039 |
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23 |
3.174377473 |
23 |
0.818182983 |
23 |
-0.752613344 |
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24 |
3.598435444 |
24 |
1.242240954 |
24 |
-0.328555373 |
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25 |
3.988568778 |
25 |
1.632374288 |
25 |
0.061577961 |
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26 |
4.348691855 |
26 |
1.992497364 |
26 |
0.421701038 |
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Projected Top
Speed (MPH) |
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P2K2 Pro |
Trinity D6 |
LRP V10 Spec 4 |
Orion Method R |
Novak SS4300 |
Novak SS5800 |
Mamba Max 5700 |
Novak Velociti 6.5 |
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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 |
7-cell |
6-cell |
Off-Road (17T) |
27.00748 |
31.50873 |
33.21942 |
38.75553 |
28.72827 |
33.51601 |
29.15434 |
34.01279 |
27.76779 |
32.39575 |
33.05689 |
38.56637 |
37.68486 |
43.96566 |
42.31281971 |
Street (21T) |
27.47474 |
32.05386 |
33.79415 |
39.42604 |
29.2253 |
34.09588 |
29.65874 |
34.60124 |
28.2482 |
32.95623 |
33.62881 |
39.23361 |
38.33684 |
44.72632 |
43.04487542 |
Foam (25T) |
28.03545 |
32.70802 |
34.48383 |
40.23066 |
29.82174 |
34.79171 |
30.26402 |
35.30739 |
28.82469 |
33.62881 |
34.31511 |
40.0343 |
39.11923 |
45.6391 |
43.92334226 |
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** Trinity P2K2 Pro
Stock 27T = 34,314 RPM @ 8.4V 29,412
RPM @ 7.2V (4,085 RPM/V) |
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** Trinity D6 12x2
= 42,206 RPM @ 8.4V 36,177 RPM @
7.2V (5,025 RPM/V) |
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** LRP V10 Spec 4
14x2 = 36,500 RPM @ 8.4V 31,286 RPM @
7.2V (4,345 RPM/V) |
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** Orion Method R
15x2 = 37,041 RPM @ 8.4V 31,750 RPM @
7.2V (4,410 RPM/V) |
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** Novak SS4300 =
35,280 RPM @ 8.4V 30,240 RPM @
7.2V (4,200 RPM/V) |
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** Novak SS5800 =
42,000 RPM @ 8.4V 36,000 RPM @
7.2V (5,000 RPM/V) |
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** Mamba Max 5700 =
47,880 RPM @ 8.4V 41,040 RPM @
7.2V (5,700 RPM/V) |
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** Novak Velociti
6.5 = 46,080 RPM @ 7.2V (6,400 RPM/V) |
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