Setups
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Gearing
Stock gearing for the Serpent SRX2 Gen3 Carpet, with common pinions and their ratios.
| Pinion | Spur ÷ pinion | FDR |
|---|---|---|
| 18T | 4.33 | 10.53 |
| 19T | 4.11 | 9.98 |
| 20T | 3.90 | 9.48 |
| 21T | 3.71 | 9.03 |
| 22T | 3.55 | 8.62 |
| 23T | 3.39 | 8.24 |
| 24T | 3.25 | 7.90 |
| 25T | 3.12 | 7.58 |
| 26T | 3.00 | 7.29 |
| 27T | 2.89 | 7.02 |
| 28T | 2.79 | 6.77 |
| 29T | 2.69 | 6.54 |
| 30T | 2.60 | 6.32 |
| 31T | 2.52 | 6.11 |
| 32T | 2.44 | 5.92 |
Shaded rows are the pinions most 1/10 2WD buggy setups run on the stock spur.
What pinion should I run?
Tell us your motor and track and get a starting pinion for the Serpent SRX2 Gen3 Carpet, with the range racers in the class run.
Get a recommendation →Shop pinion gears at AMain →What pinion gear should I use on the Serpent SRX2 Gen3 Carpet?
It depends on your motor and the track. In the 1/10 2WD buggy class, racers gear by final drive ratio: 6T and below near 9.40, 7.5–8.5T near 9.22, 17.5T near 6.48. On the SRX2 Gen3 Carpet's stock 78T spur that is about 20T for 6T and below, 21T for 7.5–8.5T, 29T for 17.5T. Tight tracks gear down, open tracks gear up. For a starting pinion matched to your motor, use the So Dialed Pinion Recommender with the SRX2 Gen3 Carpet selected.
What is the internal ratio (transmission ratio) of the Serpent SRX2 Gen3 Carpet?
The SRX2 Gen3 Carpet has an internal ratio of 2.43:1. Final drive ratio = spur ÷ pinion × 2.43. With the stock 78T spur, a 18T pinion gives an FDR of 10.53 and a 32T gives 5.92.
How many teeth is the stock spur gear on the Serpent SRX2 Gen3 Carpet?
78 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
- 300 cst
What shock oil does the Serpent SRX2 Gen3 Carpet come with?
Out of the box the SRX2 Gen3 Carpet runs 500 cst front, 300 cst rear (Serpent oil), on 2 x 1.6mm (#500136) front, 2 x 1.7mm (#500136) 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 Serpent SRX2 Gen3 Carpet come with?
The kit springs are 3.7 lb Green (#500229) front, Astro 2.1 lb Blue (#500357) 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
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