Team Corally Kronos XP 6S (2021)

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. 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 62 mph, which is their own claim on their own conditions.

How these numbers were settled

Corally's showroom prints 'Gear Ratio (out of the box): 13.23 (MOD.1)'.

• Corally's own pages show this is the complete motor-to-wheel reduction, not a transmission constant: the Kronos XTR roller page for the same platform prints 'Gear Ratio (internal): 3.31 (MOD.1)' with no total, and the Shiroi page prints both, 'Gear Ratio (internal - roller): 3.31' and 'Gear Ratio (out of the box - RTR): 13.23'. 13.23 / 3.31 = 4.00, a clean spur-over-pinion ratio, but Corally publishes neither tooth count, so both are left blank.
• The tire diameter is Corally's 'Wheel Size (diameter, width): 170x78.5mm' for the mounted assembly, not a rim size (a 1/8 MT rim is about 86mm).
• The advertised 100+ km/h (62 mph) is 80% of the 77.7 mph this gearing allows at 4.2V/cell, which corroborates the ratio.
• Corally's earlier Kronos page, for the pre-2021 release with the 51x142.5mm battery bay and CR-7220-MG servo, prints 11.7 instead; this page covers the 2021 car.

Sources

• kronos-2021world.corally.com (opens in a new tab)
• kronos-xtr-2021world.corally.com (opens in a new tab)
• shiroiworld.corally.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.

More from Team Corally

• Dementor XP 6S (2021)
• Jambo XP 6S
• Muraco XP 6S
• Punisher XP 6S
• Python XP 6S
• Shiroi XP 6S