I've talked about RC rock crawlers before, and I've also taken a look at small-scale indoor cars. This time around, I'll combine the two and also toss in a dash of FPV. Rock crawlers are especially good for indoor driving because you do not need a lot of space, nor do you have to worry about having a smooth, spotless floor. In fact, as driving surfaces go, the rougher, the better.
The vehicle I chose is the Temper ($80), a ready-to-run model from ECX. This model is available in either 1/24 or 1/18 scale. I chose the 1/24-scale version, which is the same scale as most plastic car models. It is about 6.75" (171mm) long and 4" (102mm) wide.
In many respects, this downsized crawler is just like my larger 1/10-scale machine (which is a lot like full-scale crawlers). It has full-time 4-wheel-drive, locked differentials, 4-link suspension, super-soft tires…all the stuff you would expect on a rock crawler. The only obvious difference is that the Temper uses friction dampers rather than oil-filled shocks.
A 2.4GHz radio system is included. The transmitter looks smaller than most others, but it is a comfortable fit in my hand. It has servo reversing and adjustable control rates. It's a neat, compact piece. The receiver and ESC are combined into one unit aboard the car. Steering is handled by a tiny analog servo.
Power comes from a 4-cell 150mAh NiMH battery. The battery is removable, so you can buy a few spares ($14) and not have to worry about down time. The included charger is a simple USB-powered device. To be honest, I haven't had much luck with it. I've tried powering the charger from a few different USB sources and it never seems to give the battery a full charge. I've reverted to using my Hitec X4-Eighty charger (huge overkill) with good success.