VehiclesArrma Infraction 4x4 3S BLX
Arrma Infraction 4x4 3S BLX
1/8 scale · ARA4315V3
- Top speed
- 60mphcalculated
- Final drive
- 7.12:1
- Tire
- 85mm
Open in Top Speedsourced
Specifications
Last modified
| Spec | Value | Basis |
|---|---|---|
| Drivetrain | ||
| Pinion | 20TStock | Stock |
| Spur | 50TStock | Stock |
| Transmission & axle | 2.85:1Stock | Stock |
| Spur ÷ pinion | 2.500:1Calculated | Calculated |
| Final drive | 7.12:1Stock | Stock |
| Wheels & tires | ||
| Tire diameter | 85mmEstimated | Estimated |
| Rollout | 37.5mm per motor turnCalculated | Calculated |
| Power | ||
| Motor | 3900KVStock | Stock |
| Battery | Up to 3SLiPoStock | Stock |
| Performance | ||
| Theoretical top speed | 60.5mph on 3SCalculated | Calculated |
| Motor speed | 43,290rpm, no loadCalculated | Calculated |
| Advertised top speed | 65mphMaker's claim | Maker's claim |
| Vehicle | ||
| Part number | ARA4315V3 | |
| Scale | 1/8 | |
Stock is as the vehicle ships. Calculated is worked from the stock figures on this page rather than stored beside them, so the two cannot drift apart. The top speed is kinematic: an ideal no-load RPM with no slip and no loss under load, so a real car is slower. The maker advertises 65 mph, which is their own claim on their own conditions.
How these numbers were settled
Stock pinion is 20T, which Arrma's printed 7.12 final drive is computed against (50/20 x 2.85 = 7.125).
- The manual lists a 26T 0.8 MOD optional speed pinion (ARA311009) included in the box, and Arrma's bullet says the 65+ mph figure needs it.
- Tire diameter is NOT manufacturer-sourced for this SKU: Arrma names the tread only as 'Elevens' and publishes no diameter or tire part number, and its exploded view is image-only. 85mm is the dBoots Elevens 35/085 2.4 set that retailers list as the fitment for this truck and that Arrma's own Vendetta 3S exploded view names for the sister model.
Sources
- ARA4315V3horizonhobby.com (opens in a new tab)
- Manual (PDF)horizonhobby.com (opens in a new tab)
- ARA550093horizonhobby.com (opens in a new tab)
- p1431407amainhobbies.com (opens in a new tab)
Every figure on this page traces to one of these. Where they disagreed, the note above says which was used and why.