People have been questioning the RX 18 and how heavy of a tank it can handle. My experience has been with the 3:1 gear reduction and stock motors it can handle a Metal Mato Tiger with Metal running gear. This is a very heavy tank, and as you can see the RX 18 does a good job. Will it do super spins, no. Should it do super spins, No. So if you are planning a heavy tank don't rule out the very cost effective RX18. When properely geared it can handle the task. The RX 18 when properly geared is a robust ESC. I have yet to have one fail when mated to a 3:1 reduced gear set.

[youtube]http://www.youtube.com/watch?v=5Dq_XSov28U[/youtube]