Tamiya US M1A2 Abrams - Complete Full Option Kit - 56040
(Radio Controlled Model Review)

  Released by Tamiya on December 9, 2017, the US M1A2 Abrams Tank (#56040) is the Complete Full Option Kit version, with a battery, charger and 4-channel radio system included.

  A front-mounted double gearbox, incorporating 3 gear type differentials, with two electric motors, operate together or individually to produce forward/reverse running and pivot turning. Metal torsion bars and suspension arms combine with the wide tracks to smoothly absorb bumps and dips in the terrain and provide high manoeuvrability. In addition, realistic engine sounds accompany the tank as it starts up, drives and stops to idle. The main gun can be elevated, depressed and swung to the left and right.

  The M1 Abrams was formally adopted in 1980 and features highly recognizable flat surfaces and angular form, plus a powerful gas turbine engine. It was designed to be upgrade friendly and various modifications throughout its service life have seen it remain at the cutting edge of military technology into the present day. One upgraded variant was the M1A1HA, which supported a 120mm smoothbore gun and depleted uranium armor on the turret and hull; the M1A2 evolved this design further with technological advancements such as the CITV thermal imaging sight, a Positive/Navigation System and integrated sights for the commander and the driver. Its IVIS system allows advanced communication and information sharing between friendly vehicles. The M1A2 appeared in 1992 and in 2003 it saw its first action, in operations in Iraq.

  The U.S. kit version includes 32 850-size ball bearings that replace the included brass bushings for the road wheels. Other country versions may come with metal bushings, that after a short while, when dust and grit get into them, can actually wear into the metal drive shafts that spin in them - we recommend these should be replaced by a full set of steel shielded ball bearings ASAP.

Rating: 4 RCScrapyard

Choosing a Transmitter

   When you first started in RC, you may have purchased a package that came with the car kit, motor, battery, charger, ESC and radio system complete. The transmitter was probably just a basic steer wheel, or stick type, with nothing more than forward, reverse, left, right and simple trim settings to centralise the servo and ESC.

   After a while, as your enthusiasm grows and your experience increases, you will want to move on to a better radio system, with more setting options, but where do you begin?

   Choosing the right transmitter is a personal thing. It has to feel right, have the balance you like, not be too bulky for your hand size and have all the features you might need to set up your car to your driving style.

Bumpsteer

   In plain language, Bumpsteer is exactly what it sounds like. If your car goes over a bump, it will affect the toe-in setting and can on some tracks make handling of the car in a straight line difficult.

   To check if your car might have any problems with bumpsteer, have it in race mode, with the motor and battery etc in position. Place the car on a flat surface and push down your car at the front. Looking down from above, keep a close eye on the wheels and watch for any angular movement to the side. If there is then you have bumpsteer.

   For off road cars, because of them having longer dampers in comparison to on road, a small amount of toe out is considered by many as acceptable in the lower position and can sometimes be used as a tuning option because of its aggressive effect on turning ability when entering corners. On road cars, because of the shorter damper movement and the greater need for precise steering and stability in a straight line, generally have less of a problem. However if bumpsteer is detected, drivers generally try to eliminate this as much as possible.