Setups
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Gearing
Stock gearing for the Tamiya TA08 PRO, with common pinions and their ratios.
| Pinion | Spur ÷ pinion | FDR |
|---|---|---|
| 20T | 3.55 | 6.57 |
| 21T | 3.38 | 6.25 |
| 22T | 3.23 | 5.97 |
| 23T | 3.09 | 5.71 |
| 24T | 2.96 | 5.47 |
| 25T | 2.84 | 5.25 |
| 26T | 2.73 | 5.05 |
| 27T | 2.63 | 4.86 |
| 28T | 2.54 | 4.69 |
| 29T | 2.45 | 4.53 |
| 30T | 2.37 | 4.38 |
| 31T | 2.29 | 4.24 |
| 32T | 2.22 | 4.10 |
| 33T | 2.15 | 3.98 |
| 34T | 2.09 | 3.86 |
| 35T | 2.03 | 3.75 |
| 36T | 1.97 | 3.65 |
| 37T | 1.92 | 3.55 |
| 38T | 1.87 | 3.46 |
| 39T | 1.82 | 3.37 |
| 40T | 1.77 | 3.28 |
| 41T | 1.73 | 3.20 |
| 42T | 1.69 | 3.13 |
| 43T | 1.65 | 3.05 |
| 44T | 1.61 | 2.99 |
| 45T | 1.58 | 2.92 |
| 46T | 1.54 | 2.86 |
| 47T | 1.51 | 2.79 |
| 48T | 1.48 | 2.74 |
| 49T | 1.45 | 2.68 |
| 50T | 1.42 | 2.63 |
| 51T | 1.39 | 2.58 |
| 52T | 1.37 | 2.53 |
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 Tamiya TA08 PRO, with the range racers in the class run.
Get a recommendation →Shop pinion gears at AMain →What pinion gear should I use on the Tamiya TA08 PRO?
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 TA08 PRO's stock 71T spur that is about 18T for 6T and below, 29T for 13.5T, 29T for 17.5T, 36T 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 TA08 PRO selected.
What is the internal ratio (transmission ratio) of the Tamiya TA08 PRO?
The TA08 PRO has an internal ratio of 1.85:1. Final drive ratio = spur ÷ pinion × 1.85. With the stock 71T spur, a 20T pinion gives an FDR of 6.57 and a 52T gives 2.53.
How many teeth is the stock spur gear on the Tamiya TA08 PRO?
71 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. Part numbers link to AMain.
- Front
- 400 cst
- Rear
- 400 cst
- Front
- 4-hole
- Rear
- 4-hole
- Front
- 100,000 cst
- Rear
- 3,000 cst
What shock oil does the Tamiya TA08 PRO come with?
Out of the box the TA08 PRO runs 400 cst front, 400 cst rear, on 4-hole front, 4-hole 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 Tamiya TA08 PRO come with?
The kit springs are Dark Grey-Green Short (#42306) front, Dark Grey-Green Short (#42306) rear. Stiffer springs suit high grip and big jumps; softer springs add grip on slick or bumpy tracks.
What diff fluid does the Tamiya TA08 PRO come with?
The kit diff fluid is 100,000 cst front, 3,000 cst rear. Thicker front adds steering on power; thicker center sends more drive rearward; thicker rear stabilizes the car under throttle.
Setup Help
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