VehiclesMST RMX 4 RTR
MST RMX 4 RTR
1/10 scale · street and speed-run body · 553108
- Final drive
- 10.91:1
Specifications
Last modified
| Spec | Value | Basis |
|---|---|---|
| Drivetrain | ||
| Pinion | 22TStock | Stock |
| Spur | 80TStock | Stock |
| Transmission & axle | 3.00:1Stock | Stock |
| Final drive | 10.91:1Stock | Stock |
| Wheels & tires | ||
| Tire diameter | Not published | |
| Power | ||
| Motor | Not published | |
| Battery | Not published | |
| Stock motor | XBLS 17.5TStock | Stock |
| Stock ESC | XBLS S60AStock | Stock |
| Battery connector | T-StyleStock | Stock |
| Performance | ||
| Theoretical top speed | Not published | |
| Vehicle | ||
| Part number | 553108 | |
| Scale | 1/10 | |
| Class | Street and speed-run body | |
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. 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 | 22T | 48P | Not published | 148022P |
| Spur | 80T | Not published | Not applicable | 230189 |
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.
How these numbers were settled
Rear-wheel drive drift car with a 4-gear gearbox, shown here with a 22T 48P pinion on an 80T 48P spur, 10.91 overall.
- The manual's parts pages (p. 11) and parts code list (p. 16) name one 22T pinion (148022P), and the exploded view (p. 2) draws that pinion on the motor; the RMX 4 80T spur set is part 230189 (p. 12).
- The gear chart for the 80T spur (p. 6) gives the ratio after the spur as the 60T differential gear over the 20T main shaft gear, 3.00, with 22T at 10.91, but shades no cell.
- The manual's original-setting setup sheet (p. 10) writes 80 over 26 times 3 as 9.23 instead, so check the fitted pinion before relying on the 22T figure.
- The motor is the XBLS 17.5T sensored brushless and the ESC is the XBLS S60A with a T-style plug; MST's distributors publish no KV for the motor or cell rating for the ESC, and the product page lists a 2S LiPo or 6-cell NiMH pack.
- The tire size is not published.
- The wheelbase adjusts to 257, 266 or 275mm, so it is left blank.
- Body and colour versions 553108 to 553112 share this chassis and electronics.
Documents
- ManualExploded manual, RMX 4 RTR (MST PDF, dealer copy) (opens in a new tab)Exploded view p. 2-3, setup sheet p. 10, parts p. 11-15, parts code p. 16
- Gearing chartGear ratio chart for 80T spur (MST PDF, dealer copy) (opens in a new tab)p. 6
Sources
- p1830639amainhobbies.com (opens in a new tab)
- Manual (PDF)images.amainhobbies.com (opens in a new tab)
- p1409122amainhobbies.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.