Ultimate M3T .21 nitro off-road engine

Modelix Racing have introduced the Ultimate Racing M3T .21 nitro off-road engine. Based off of the O.S. B2102 square stroke engine, Ultimate’s latest power plant will offer exceptional and very linear power over the whole RPM range. The engine comes with a redesigned cooling head that is slightly higher compared to the B2102’s but its lighter weight will still keep the overall centre of gravity low. Also part of the updated package is a new carburettor with a redesigned high speed needle for optimised fuel flow, more stable idling, improved mileage and increased overall performance. Another area of improvement is the harder 7075-T6 aluminium backplate that reduced internal friction while improving conrod durability. Other features include a balanced and silicone-filled crankshaft, Japanese-made high-precision front and ceramic rear ball bearings, 6.0mm and 6.5mm venturi inserts and a 3-port sleeve and piston made from high-strength aluminium.

Specifications:
– Displacement: 3.46cc
– Power output: 2.61hp @ 34.000rpm
– Practical range RPM: 4.000-42.000
– Bore x stroke: 16.40×16.40
– Sleeve: 3+1 ports
– Rear ball bearing: Ceramic
– Front ball bearing: Steel
– Crankshaft: 14mm
– Carburettor: Aluminium w/insulator gasket
– Glow plug: P3 Turbo
– Exhaust Position: rear
– Weight: 345g
– Fuel type: 25% nitro

Source: Modelix [modelixracing.com]