O.S. MAX-12TG Ver.V 1:10 Touring Car engine

Japanese engine manufacturer O.S. has released the fifth generation of their long established MAX-12TG 1:10 touring car engine line.  While following user requests and trends, OS have pursued ease of use and better performance with each successive generation, and now in its fifth generation the MAX-12TG Ver.V has been improved in various parts in order to demonstrate excellent power even in regulated race scenes.  The first major change in appearance is the addition of one cooling fin to the bottom of the outer head.  This improves engine cooling performance and enables stable performance. Also, by increasing the lightweight holes in the fins, the weight increase due to adding one fin is reduced. Furthermore, the head has a new laser design, making you aware that it is “Ver.V”.  Another point that cannot be overlooked is the improved idling performance due to changes in crankshaft timing and improved carburetor.  The shape of the combustion chamber in the inner head has been changed to improve combustion efficiency and increase torque in the mid-speed range.

MAX-12TG Ver.V Specification
Stroke volume: 2.1 cc
Bore: 13.8mm
Stroke: 14.0mm
Output: 0.9 / 30,000 rpm
Practical rotation speed: 5,000-32,000 rpm
Weight: 216g
Standard accessories
Glow plug T-P4
Exhaust seal ring 1 piece OS SPEED Dust cap set φ3 (1 piece), φ16 (2 pieces)

Source: O.S. Engines [os-engines.co.jp]