HPI Savage - Savage 25

The Savage 21 was replaced by the updated Savage 25. This version added both a larger HPI .25ci (4.1cc) engine, the S-25, for additional power and torque as well as HPI's unique "Roto-Start" electric starter system. The Roto-Start kept the weight-saving advantages of the pull start with the extra added convenience of electric starting via an external electric starter. This starter, standard on most new HPI RTR models, incorporates a gear-driven one-way bearing mounted on the engine in lieu of the pull starter. The external starter is a motor-driven gearbox which spins a hexagonal steel shaft and is powered by a standard 7.2v nickel cadmium battery pack. A pinned ball joint at the end of the shaft mates with a socket on the rear of the engine-mounted one-way bearing assembly. The system has proven to be a popular one, with third-party engine manufacturers such as O.S. Engines and Team Orion designing their replacement engines to accept the assembly. An limited edition version of the Savage 25 added a three-speed transmission along with updated wheels and tires. These parts can easily be retrofitted to previous versions.

Savage 25 spider diff (4 gear) was also fitted as standerd to the 25

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