Setups
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Gearing
Stock gearing for the Schumacher Mi8, 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 Mi8, with the range racers in the class run.
Get a recommendation →Shop pinion gears at AMain →What pinion gear should I use on the Schumacher Mi8?
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 Mi8'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 Mi8 selected.
What is the internal ratio (transmission ratio) of the Schumacher Mi8?
The Mi8 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.
How many teeth is the stock spur gear on the Schumacher Mi8?
85 teeth. Changing the spur moves every pinion's ratio at once; most racers leave the spur and tune with the pinion.
Kit setup
Kit shock setup (Asphalt med grip). Part numbers link to AMain.
- Front
- 300 cst
- Rear
- 300 cst
- Rear
- 5,000 cst
What shock oil does the Schumacher Mi8 come with?
Out of the box the Mi8 runs 300 cst front, 300 cst rear (CORE oil), on 4 x 1mm (#U7537) front, 4 x 1mm (#U7537) rear pistons. That is the kit setup; you will need to adjust it for your track conditions. The RC Setup App can help dial it in.
What springs does the Schumacher Mi8 come with?
The kit springs are 3.1 N/mm Grey (#CR849) front, 2.9 N/mm Purple (#CR847) rear. Stiffer springs suit high grip and big jumps; softer springs add grip on slick or bumpy tracks.
What diff fluid does the Schumacher Mi8 come with?
The kit diff fluid is 5,000 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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