Losi Tenacity SCT 4WD Brushless RTR with AVC

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. The top speed is kinematic: an ideal no-load RPM with no slip and no loss under load, so a real car is slower.

How these numbers were settled

From Losi's spec table on the LOS03010 page: Motor Size '550 4-Pole 3800Kv', Pinion 16T, Spur Gear 40T, battery '2S or 3S'.

• Losi prints no ratio or tire diameter for this SKU, but it prints both for siblings that share the parts.
• The Tenacity SCT 4WD Brushed (LOS03024T2) uses the same 40T spur and the same diff ring and pinions and prints 'Internal Gear Ratio: 3.89:1' and the stock tire's 'Outer Diameter: 4.65 in (118mm)'; both manuals list the same LOS43016 tire as stock.
• The Tenacity-DB Brushless (LOS03014T1), with the same 3800Kv motor and 16T/40T mesh, prints a 9.73 final drive, and 40/16 x 3.89 = 9.73.
• A 12T pinion also comes in the box for 3S running (manual p.8), which gives 12.97; that is torque gearing, not speed gearing, so the 16T stays as stock.

Sources

• LOS03010losi.com (opens in a new tab)
• LOS03024T2losi.com (opens in a new tab)
• LOS03014T1losi.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.

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