Ask Miles, our Setup AI that’s been trained on the ST1 V3T R.
Setups
Gearing
Stock gearing for the PR Racing ST1 V3T R, with common pinions and their ratios.
| Pinion | Spur ÷ pinion | FDR |
|---|---|---|
| 16T | 5.06 | 13.92 |
| 17T | 4.76 | 13.10 |
| 18T | 4.50 | 12.38 |
| 19T | 4.26 | 11.72 |
| 20T | 4.05 | 11.14 |
| 21T | 3.86 | 10.61 |
| 22T | 3.68 | 10.13 |
| 23T | 3.52 | 9.68 |
| 24T | 3.38 | 9.28 |
| 25T | 3.24 | 8.91 |
| 26T | 3.12 | 8.57 |
| 27T | 3.00 | 8.25 |
| 28T | 2.89 | 7.96 |
| 29T | 2.79 | 7.68 |
| 30T | 2.70 | 7.43 |
Shaded rows are the pinions most 1/10 2WD 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 PR Racing ST1 V3T R, with the range racers in the class run.
Get a recommendation →Shop pinion gears at AMain →What pinion gear should I use on the PR Racing ST1 V3T R?
It depends on your motor and the track. In the 1/10 2WD truck class, racers gear by final drive ratio: 7.5–8.5T near 10.14, 13.5T near 8.27. On the ST1 V3T R's stock 81T spur that is about 22T for 7.5–8.5T, 27T for 13.5T. Tight tracks gear down, open tracks gear up. For a starting pinion matched to your motor, use the So Dialed Pinion Recommender with the ST1 V3T R selected.
What is the internal ratio (transmission ratio) of the PR Racing ST1 V3T R?
The ST1 V3T R has an internal ratio of 2.75:1. Final drive ratio = spur ÷ pinion × 2.75. With the stock 81T spur, a 16T pinion gives an FDR of 13.92 and a 30T gives 7.43.
How many teeth is the stock spur gear on the PR Racing ST1 V3T R?
81 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
- Green 4.20lb #02530016 →
- Rear
- Green 3.00lb #02530056 →
- Front
- 3 x 1.5mm machined #17430046 →
- Rear
- 3 x 1.7mm machined #17430076 →
What springs does the PR Racing ST1 V3T R come with?
The kit springs are Green 4.20lb (#02530016) front, Green 3.00lb (#02530056) rear. Stiffer springs suit high grip and big jumps; softer springs add grip on slick or bumpy tracks.
Setup Help
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Setup App & Race Log
Your PR Racing ST1 V3T R is in the RC Setup App
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