Ask Miles, our Setup AI that’s been trained on the F110 SF4.
Setups
Gearing
Stock gearing for the Serpent F110 SF4, with common pinions and their ratios.
| Pinion | Spur ÷ pinion | FDR | Rollout |
|---|---|---|---|
| 26T | 2.62 | 2.62 | 74.5 mm |
| 27T | 2.52 | 2.52 | 77.3 mm |
| 28T | 2.43 | 2.43 | 80.2 mm |
| 29T | 2.34 | 2.34 | 83.1 mm |
| 30T | 2.27 | 2.27 | 85.9 mm |
| 31T | 2.19 | 2.19 | 88.8 mm |
| 32T | 2.13 | 2.13 | 91.7 mm |
| 33T | 2.06 | 2.06 | 94.5 mm |
| 34T | 2.00 | 2.00 | 97.4 mm |
| 35T | 1.94 | 1.94 | 100.3 mm |
| 36T | 1.89 | 1.89 | 103.1 mm |
| 37T | 1.84 | 1.84 | 106.0 mm |
| 38T | 1.79 | 1.79 | 108.8 mm |
| 39T | 1.74 | 1.74 | 111.7 mm |
| 40T | 1.70 | 1.70 | 114.6 mm |
| 41T | 1.66 | 1.66 | 117.4 mm |
| 42T | 1.62 | 1.62 | 120.3 mm |
| 43T | 1.58 | 1.58 | 123.2 mm |
| 44T | 1.55 | 1.55 | 126.0 mm |
| 45T | 1.51 | 1.51 | 128.9 mm |
| 46T | 1.48 | 1.48 | 131.8 mm |
| 47T | 1.45 | 1.45 | 134.6 mm |
Shaded rows are the pinions most 1/10 2WD f1 setups run on the stock spur. Rollout at a 62 mm tire.
What pinion should I run?
Tell us your motor and track and get a starting pinion for the Serpent F110 SF4, with the range racers in the class run.
Get a recommendation →Shop pinion gears at AMain → (opens in new tab)What pinion gear should I use on the Serpent F110 SF4?
It depends on your motor and the track. In the 1/10 2WD f1 class, racers gear by final drive ratio: 21.5T and up near 2.19. On the F110 SF4's stock 68T spur that is about 31T 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 F110 SF4 selected.
What is the internal ratio (transmission ratio) of the Serpent F110 SF4?
The F110 SF4 has an internal ratio of 1:1. Final drive ratio = spur ÷ pinion × 1. With the stock 68T spur, a 26T pinion gives an FDR of 2.62 and a 47T gives 1.45.
How many teeth is the stock spur gear on the Serpent F110 SF4?
68 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.
- Side tubes
- 600 cst
- Front
- 18 lbs
- Center
- 8 lbs
- Side
- 4.5 lbs
What shock oil does the Serpent F110 SF4 come with?
Out of the box the F110 SF4 runs 600 cst side tubes (Serpent oil). 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 F110 SF4 come with?
The kit springs are 18 lbs front, 8 lbs center, 4.5 lbs side. Stiffer springs suit high grip and big jumps; softer springs add grip on slick or bumpy tracks.
Setup Help
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