Modelix unveils new Ultimate M3T .21 offroad competition engine

0 March 16, 2017, 10:57 a.m.

Main Photo: Modelix unveils new Ultimate M3T .21 offroad competition engine

Mike Garrison
LiveRC.com

Modelix Racing is pleased to announce the all-new Ultimate M3T 3-port .21 Offroad Competition Engine. The new engine is built by the one and only O.S. Engines, and based upon the successful B2102 square stroke engine.

Modelix says, "The characteristics of this engine adds to the Ultimate line all the best possible features you can have on a nitro engine, specifically designed for maximum power, performance and tuneability. With this engine you will have a great and super smooth linear power from low to high R.P.M.

The cooling head has been redesigned by Modelix. It's not as low as the B2102 low profile, but it's lighter so it keeps the center of gravity as low as the B2102 while improving its performance on very high temperatures.

The Ultimate M3T engine comes with a new carburetor where high speed needle holder has been redesigned for a better refrigeration of the fuel flow into the carburetor, lowering the temp of the carb, and as a consequence it's more stable with a great idle stability, improves fuel mileage andoverall engine performace.

Besides this, the uniball joint of the carb slide has also been modified with two stoppers instead of one. With this new modified design, you can easier adjust the angle of the uniball joint without having to disassemble the engine. This carb offers a higher accuracy tuning, a very interesting advantage to experienced drivers.

The backplate is CNC machined and made of 7075-T6 Swiss Aluminum. The reason of making it with this material is to make it harder than the original and reduce the conrod-backplate friction increasing the life of the conrod and improving engine efficiency and performance. Thanks to its design, you can remove the backplate without damaging the conrod even when it is on its lower position (PMI). The lateral grooves allow to easily remove the backplate without having to use any tool that can damage it.

The M3T crankshaft has been designed by the O.S. team of engineers to ensure an optimum flow of fuel thanks to the aerodynamic design and the silicone filling. It is balanced with a tungsten weight in order to increase the inertia to rotation. Crankshaft durability has been improved thanks to the Dimond-Like Carbon (DLC) coatings.

In line with the high quality and performance of this engine, its two high precision ceramic made in Japan bearings ensure high idle stability, longer life and low friction at high temperatures.

The engine is supplied with two venturis, a 6.0 and a 6.5 to adjust fuel mileage and torque.

The sleeve with 3 inlet port and an exhaust port guarantee a low fuel consumption with a very high but smooth and linear power. Both, the sleeve and piston are made from a high strength aluminium bar to improve its durability."