In my previous article, I talked about my experience with the ECX Ruckus monster truck and how it brought me back up to speed on current RC technology. One of the challenges that I faced with the Ruckus was that I thought it was too fast for my son to handle. He spent some time driving a slower car and soon had the skills necessary for the Ruckus. That gateway car was a Duratrax Evader BX buggy (which is no longer produced). It was a perfect starter car for him. It was slow enough to keep him out of too much trouble while he honed his driving reflexes. Yet, it was fast enough to get him excited about the hobby, challenge him on occasion, and satisfy the dirt-slinging ambitions of a pre-teen. Once he became comfortable with the Ruckus, however, it was clear that we needed another fast vehicle to keep both of us entertained.
The simplest route would have been to install a more powerful brushed motor and a new set of high-traction tires on the Evader. After briefly considering that option, I decided to modernize the buggy completely. I added ball bearings, a 2.4GHz radio, a brushless motor system and a quasi-monster truck makeover. Let's walk through that upgrade.
Many RC cars include bronze bushings on their moving parts rather than ball bearings. They work okay for beginners, but they eventually wear down and the tolerances between moving parts get loose. Then things get sloppy, noisy, and draggy. Upgrading to ball bearings reduces quite a bit of friction, but also maintains the same tolerances throughout the life of the car. I purchased a set of ball bearings for the Evader and guided my son through the steps to install them.
To install the bearings, we had to disassemble the whole transmission. This was a good opportunity for my son to get a look inside the gearbox and get a feel for what it does and how it works. There are also bearings for the rear axles and front wheels. It probably took less about an hour to do the whole thing.
The radio that came with the Evader worked just fine. However, I wanted not only a 2.4 GHz radio, but something with more adjustability to help control the power I expected out of the souped-up Evader. I ended up with a Futaba 4PLS 4-channel radio system. What a radio! I’ll cover its range of features in the upcoming computer radio overview. But I can say that this is by far the nicest surface radio I’ve ever owned and probably the last one I’ll ever need.