VehiclesArrma Fury 223S BLX DSC
Arrma Fury 223S BLX DSC
1/10 scale · short course truck · ARA3521
- Top speed
- 48mphcalculated
- Final drive
- 11.23:1
- Tire
- 104mm
Specifications
Last modified
| Spec | Value | Basis |
|---|---|---|
| Drivetrain | ||
| Pinion | 17TStock | Stock |
| Spur | 61TStock | Stock |
| Transmission & axle | 3.13:1Derived | Derived |
| Spur ÷ pinion | 3.588:1Calculated | Calculated |
| Final drive | 11.23:1Stock | Stock |
| Wheels & tires | ||
| Tire diameter | 104mmStock | Stock |
| Rollout | 29.1mm per motor turnCalculated | Calculated |
| Power | ||
| Motor | 4000KVStock | Stock |
| Motor shaft | 5 mmStock | Stock |
| Battery | Up to 3SLiPoStock | Stock |
| Performance | ||
| Theoretical top speed | 48.2mph on 3SCalculated | Calculated |
| Motor speed | 44,400rpm, no loadCalculated | Calculated |
| Advertised top speed | 50mphMaker's claim | Maker's claim |
| Vehicle | ||
| Part number | ARA3521 | |
| Scale | 1/10 | |
| Class | Short course truck | |
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. Derived is worked out from gear tooth counts the maker publishes rather than printed as a ratio; the notes below say how. 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 50 mph, which is their own claim on their own conditions.
Gearing parts
| Component | Teeth | Pitch | Bore | Part number |
|---|---|---|---|---|
| Fitted at the factory | ||||
| Pinion | 17T | Mod 0.8 | 5 mm | ARA311000 (opens in a new tab) |
| Spur | 61T | Mod 0.8 | Not applicable | ARA311100 (opens in a new tab) |
Tooth counts are the ones in the specifications above. Pitch is given as metric module (Mod 1, Mod 0.8) or diametral pitch (32P, 48P). They are different standards and are not interchangeable, even where the numbers look close. Bore is the pinion’s hole, listed separately from the motor shaft (5 mm on the stock motor). Linked part numbers go to the maker's or official distributor's page for that part.
How these numbers were settled
The brushless 223S version of the Fury 2WD short course truck, with a Spektrum 4000Kv motor and the Spektrum SLT 45A 2-in-1 ESC and receiver rated for 2S or 3S LiPo.
- The 17T pinion and 61T spur come from Horizon's standard-parts list.
- Horizon's standard-parts list names the 2WD gearbox: a 15T layshaft gear driving the 47T diff through a 29T idler, so the idler cancels and the transmission ratio is 47/15 = 3.13, the figure Horizon prints for the Quake 223S on the same gearbox.
- Final drive is 61/17 x 3.13 = 11.23.
- The stock tire is the dBoots Fortress SC (ARA-1616), whose page prints an overall diameter of 4.1 in (104mm).
- Stock gearing computes to about 48 mph at 3.7V per cell, 55 mph fully charged, against Arrma's 50+ mph on 3S.
Documents
- ManualInstruction manual (Horizon PDF) (opens in a new tab)
- Exploded viewExploded view (Horizon PDF) (opens in a new tab)
- Exploded viewTechnical pack: pinion change, exploded view (Horizon PDF) (opens in a new tab)How to change the pinion/motor
Sources
- ARA3521horizonhobby.com (opens in a new tab)
- searchhorizonhobby.com (opens in a new tab)
- ARA311095horizonhobby.com (opens in a new tab)
- ARA311201horizonhobby.com (opens in a new tab)
- ARA-1616horizonhobby.com (opens in a new tab)
- ARA3537horizonhobby.com (opens in a new tab)
- ARA311000horizonhobby.com (opens in a new tab)
- Manual (PDF)horizonhobby.com (opens in a new tab)
- Manual (PDF)horizonhobby.com (opens in a new tab)
- ARA311100horizonhobby.com (opens in a new tab)
- SPMXSM5000spektrumrc.com (opens in a new tab)
- SPMXSM5000horizonhobby.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.