Chieftain 900: Royal Ordnance’s Chieftain

Official News, Development Blogs and Updates
428

Any updates on the chieftain ?
Lost its Apu module?

Any change to its current speed?

429

I haven’t really looked into it tbh, i just remember that speed is dependent on engine RPM, top gear ratio, and I think sprocket radius. If it’s more power at the same RPM with the same transmission then it’ll be a similar situation to the new CV12 HP increase, where mobility improves but top speed is the same.

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430

Ah that is a bit shit then

431

The game procedurally generates the top speed of a vehicle using real-world values, though the documented top speed is always used intead of calculated speed, if different;

  1. Pitch Circle Radius of the sprocket
  2. Engine-transmission transfer ratio
  3. Final drive ratio
  4. Gear ratio (selected gear eg. R1, F1, F2, F3, F4 etc.)
432

according to gszabi: (RPM * driveGearRadius) / (mainGearRatio * sideGearRatio * chosen_gear) * (0.12 * math.pi)

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433

Yes that’s the formula produced by @FlipAllTheTables. If like me you can’t do the maths yourself then you can use an AI to do it. I have an excel which I just enter the values into in order to produce speeds in all gears.

Gaijin seem to value primary source statements of “top speed” over calculated speeds, and I fell foul of that once or twice before realising. Ratios are not considered absolute for game implementation.

434

So the Cheiftain 900 should have a 52kph top speed, not 48kph as it is currently?