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Stock gearing for the Schumacher Mi6/Mi6 EVO, with common pinions and their ratios.
| Pinion | Spur ÷ pinion | FDR |
|---|---|---|
| 20T | 4.25 | 7.73 |
| 21T | 4.05 | 7.36 |
| 22T | 3.86 | 7.02 |
| 23T | 3.70 | 6.72 |
| 24T | 3.54 | 6.44 |
| 25T | 3.40 | 6.18 |
| 26T | 3.27 | 5.94 |
| 27T | 3.15 | 5.72 |
| 28T | 3.04 | 5.52 |
| 29T | 2.93 | 5.33 |
| 30T | 2.83 | 5.15 |
| 31T | 2.74 | 4.98 |
| 32T | 2.66 | 4.83 |
| 33T | 2.58 | 4.68 |
| 34T | 2.50 | 4.54 |
| 35T | 2.43 | 4.42 |
| 36T | 2.36 | 4.29 |
| 37T | 2.30 | 4.18 |
| 38T | 2.24 | 4.07 |
| 39T | 2.18 | 3.96 |
| 40T | 2.13 | 3.86 |
| 41T | 2.07 | 3.77 |
| 42T | 2.02 | 3.68 |
| 43T | 1.98 | 3.59 |
| 44T | 1.93 | 3.51 |
| 45T | 1.89 | 3.43 |
| 46T | 1.85 | 3.36 |
| 47T | 1.81 | 3.29 |
| 48T | 1.77 | 3.22 |
| 49T | 1.73 | 3.15 |
| 50T | 1.70 | 3.09 |
| 51T | 1.67 | 3.03 |
| 52T | 1.63 | 2.97 |
Shaded rows are the pinions most 1/10 4WD touring/gt setups run on the stock spur.
What pinion should I run?
Tell us your motor and track and get a starting pinion for the Schumacher Mi6/Mi6 EVO, with the range racers in the class run.
Get a recommendation →Shop pinion gears at AMain →It depends on your motor and the track. In the 1/10 4WD touring/gt class, racers gear by final drive ratio: 6T and below near 7.34, 13.5T near 4.51, 17.5T near 4.51, 21.5T and up near 3.65. On the Mi6/Mi6 EVO's stock 85T spur that is about 21T for 6T and below, 34T for 13.5T, 34T for 17.5T, 42T for 21.5T and up. Tight tracks gear down, open tracks gear up. For a starting pinion matched to your motor, use the So Dialed Pinion Recommender with the Mi6/Mi6 EVO selected.
The Mi6/Mi6 EVO has an internal ratio of 1.818:1. Final drive ratio = spur ÷ pinion × 1.818. With the stock 85T spur, a 20T pinion gives an FDR of 7.73 and a 52T gives 2.97.
85 teeth. Changing the spur moves every pinion's ratio at once; most racers leave the spur and tune with the pinion.
Kit shock setup. Part numbers link to AMain.
The kit springs are Green 16lb (#U4306) front, Green 16lb (#U4306) rear. Stiffer springs suit high grip and big jumps; softer springs add grip on slick or bumpy tracks.
The kit diff fluid is 2,000 cst rear. Thicker front adds steering on power; thicker center sends more drive rearward; thicker rear stabilizes the car under throttle.
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