Ask Miles, our Setup AI that’s been trained on the RC8 T4.
Setups
Gearing
Stock gearing for the Team Associated RC8 T4, with common pinions and their ratios.
| Pinion | Spur ÷ pinion | FDR |
|---|---|---|
| 12T | 3.83 | 17.63 |
| 13T | 3.54 | 16.28 |
| 14T | 3.29 | 15.11 |
| 15T | 3.07 | 14.11 |
| 16T | 2.88 | 13.22 |
| 17T | 2.71 | 12.45 |
| 18T | 2.56 | 11.76 |
Shaded rows are the pinions most 1/8 4WD truck setups run on the stock spur.
What pinion should I run?
Tell us your motor and track and get a starting pinion for the Team Associated RC8 T4, with the range racers in the class run.
Get a recommendation →Shop pinion gears at AMain →What pinion gear should I use on the Team Associated RC8 T4?
It depends on your motor and the track. In the 1/8 4WD truck class, racers gear by final drive ratio: 1800–2300 Kv near 13.97. On the RC8 T4's stock 46T spur that is about 15T for 1800–2300 Kv. Tight tracks gear down, open tracks gear up. For a starting pinion matched to your motor, use the So Dialed Pinion Recommender with the RC8 T4 selected.
What is the internal ratio (transmission ratio) of the Team Associated RC8 T4?
The RC8 T4 has an internal ratio of 4.6:1. Final drive ratio = spur ÷ pinion × 4.6. With the stock 46T spur, a 12T pinion gives an FDR of 17.63 and a 18T gives 11.76.
How many teeth is the stock spur gear on the Team Associated RC8 T4?
46 teeth. Changing the spur moves every pinion's ratio at once; most racers leave the spur and tune with the pinion.
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