VehiclesKyosho Ultima SC6 Readyset
Kyosho Ultima SC6 Readyset
1/10 scale · short course · 30859
- Final drive
- 10.95:1
- Tire
- 110mm
No published motor KV: compare gearing by rollout.

Specifications
Last modified
| Spec | Value | Basis |
|---|---|---|
| Vehicle | ||
| Class | Short course | |
| Scale | 1/10 | |
| Part number | 30859 | |
| Drivetrain | ||
| Pinion | 19TStock | Stock |
| Spur | 80TStock | Stock |
| Transmission & axle | 2.60:1Derived | Derived |
| Spur ÷ pinion | 4.211:1Calculated | Calculated |
| Final drive | 10.95:1Stock | Stock |
| Wheels & tires | ||
| Tire diameter | 110mmStock | Stock |
| Rollout | 31.6mm per motor turnCalculated | Calculated |
| Power | ||
| Motor | Not published | |
| Motor shaft | Not published | |
| Battery | Not published | |
| Stock motor | VORTEX dDRIVEStock | Stock |
| Stock ESC | VORTEX dDRIVEStock | Stock |
| Performance | ||
| Theoretical top speed | Not published | |
| Chassis | ||
| Weight | 2 kg (4.4 lb)Stock | Stock |
| Length | 550 mm21.7 inStock | Stock |
| Width | 296 mm11.7 inStock | Stock |
| Height | 150 mm5.9 inStock | Stock |
| Wheelbase | 330 mm13 inStock | Stock |
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. Not published means it exists but no source we could find prints it.
Gearing parts
| Component | Teeth | Pitch | Bore | Part number |
|---|---|---|---|---|
| Fitted at the factory | ||||
| Pinion | 19T | 48P | Not published | Not published |
| Spur | 80T | 48P | Not applicable | UB050-80 (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. Linked part numbers go to the maker's or official distributor's page for that part.
How these numbers were settled
The factory-built, brushless ready-to-run version of the Ultima SC6 2WD short course truck, from 2015.
- Kyosho's Technical Data gives 'Gear Ratio 10.95:1' and 'Tire(F/R) Φ110×44mm'.
- Kyosho's spare-parts list for 30859 names a 48P 80T spur (UB050-80) and a 19T pinion, listed both as PNGS4819 and UM319C.
- The ratio after the spur works out at 10.95 x 19 / 80 = 2.60, which matches the 'Gear Ratio 2.6:1' printed for the SC6 kit.
- The power unit is Team Orion's VORTEX dDRIVE, a one-piece brushless motor and ESC.
- Kyosho sells the dDRIVE in 2700KV (ORI28313) and 3000KV (ORI28314) versions and does not say which one this truck carries, so the KV is left blank.
- Kyosho asks for a 7.2V battery (NiMH recommended) and prints no LiPo cell rating, so the cell count is left blank.
- No manual for the readyset is published on Kyosho's site.
Sources
- 30859rc.kyosho.com (opens in a new tab)
- 1rc.kyosho.com (opens in a new tab)
- ub050-80rc.kyosho.com (opens in a new tab)
- um319crc.kyosho.com (opens in a new tab)
- pngs4819rc.kyosho.com (opens in a new tab)
- 30070brc.kyosho.com (opens in a new tab)
- ori28313rc.kyosho.com (opens in a new tab)
- ori28314rc.kyosho.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.
