Setups
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Gearing
Stock gearing for the PR Racing S1V4TR, with common pinions and their ratios.
| Pinion | Spur ÷ pinion | FDR |
|---|---|---|
| 16T | 4.81 | 12.61 |
| 17T | 4.53 | 11.87 |
| 18T | 4.28 | 11.21 |
| 19T | 4.05 | 10.62 |
| 20T | 3.85 | 10.09 |
| 21T | 3.67 | 9.61 |
| 22T | 3.50 | 9.17 |
| 23T | 3.35 | 8.77 |
| 24T | 3.21 | 8.41 |
| 25T | 3.08 | 8.07 |
| 26T | 2.96 | 7.76 |
| 27T | 2.85 | 7.47 |
| 28T | 2.75 | 7.21 |
| 29T | 2.66 | 6.96 |
| 30T | 2.57 | 6.72 |
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 S1V4TR, 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 S1V4TR?
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 S1V4TR's stock 77T spur that is about 20T for 7.5–8.5T, 24T 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 S1V4TR selected.
What is the internal ratio (transmission ratio) of the PR Racing S1V4TR?
The S1V4TR has an internal ratio of 2.62:1. Final drive ratio = spur ÷ pinion × 2.62. With the stock 77T spur, a 16T pinion gives an FDR of 12.61 and a 30T gives 6.72.
How many teeth is the stock spur gear on the PR Racing S1V4TR?
77 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
- 500 cst
- Rear
- 450 cst
- Front
- 5.04lb White/yellow #02530046 →
- Rear
- 3.90lb White/yellow #02530086 →
- Front
- 2 x 1.6mm
- Rear
- 2 x 1.6mm
What shock oil does the PR Racing S1V4TR come with?
Out of the box the S1V4TR runs 500 cst front, 450 cst rear, on 2 x 1.6mm front, 2 x 1.6mm 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 PR Racing S1V4TR come with?
The kit springs are 5.04lb White/yellow (#02530046) front, 3.90lb White/yellow (#02530086) 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 S1V4TR is in the RC Setup App
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