Vantec RDFR22 Speed Controller One of the most popular models for Combat Robot use. This is also a very compact dual-channel speed controller for smaller bots.
$274.95
Vantec RDFR23 Speed Controller This is a great controller if you're looking to move into larger robots. Due to it's higher power handling, it is a good choice for robots 60-100 lbs.
$294.95
Vantec RDFR36E Speed Controller Now we're getting serious. The RDFR36E has a thick, extruded aluminum case to assist in heat dissipation, and can handle much more current than the some of the other models.
$590.88
Vantec RDFR47E Speed Controller The BIG one. The RDFR47E is the highest current handling, most durable Vantec in the 9-55 volt range.
$274.95 
