Maybe you are looking to do some simple upgrades to your RTR. Maybe you're tired of replacing brushed motors. Maybe you just want more power and consistency, along with more runtime.
Most of the setups can run okay on NIMH, just don't have the reel or response like lipos, but work okay for the most part. Modern ESC's require their Lipo Cutoff or lipo setting be "disabled". Most ESC's require a tuner device. Check your manual for the required programmer or tuner device.
Overall, the best advice our techs provide when it comes to picking a system is first decide on the battery or voltage you will use.
The idea of a combo that runs 2 different voltages may not be the ideal direction on as setup. A system that is okay on 1 voltage will either over heat or be slow on the other voltage. The "steps" in the Lipo cells is a pretty big gap and motors don't like it.
For most 10th scale vehicles, our Max 10 G2 combos are awesome and a fan favorite. We offer normal 540 size (3652) or longer than 550(3665) size motors and ESC's that match them for given KV ratings. Motor numbers are their size. 36mm diameter with 52mm length. Or 36mm Diameter, with 65mm length. This basic motor size system applies to all Hobbywing motors. Diameter and Length.
For 2s, we suggest 4000KV or higher.
For 3s, Lower than 4000KV works well.
Typically 4s is not ideal for 10th scale as oversized 8th (4268 size) scale motors are needed and aren't easy to fit or mount simply.
4wd trucks like the longer motors.
2wd trucks, the normal size motors are fine.
We also have some great options in the Quicrun series with the new updates to that as well. Quicrun WP10BL120 with the new Quicrun G2 3652, or 3660 size motors.
If you're looking to go racing at a track, have a look through the XR10 series in the XERun line up. These are suited for race applications, have "Blinky mode" for spec classes that require it, and offer a wide range of tuning options for different application. Offered in all the popular turn rated (2 pole) motors, and compatible with KV rated (4 pole) motors as well. The turn, or KV used, will depend on the intended class you will be racing. Best advice is to check what class requirements are, or check with racers in open classes for some guidance on a modified or open class motor turn suggestion. Most of the popular 10th scale racing classes run 2 pole, turn based motors. 4x SCT class, and some of the 10th scale "truggy" classes, run the 4 pole, KV based motors. Before you make any decisions it's good to go to the track, check out the classes and chat with racers to determine what direction you should go. Many tracks start folks out in a Spec style class.