Just wondering if the tekin Rs will run the castle 3800kv 4 pole motor without any issues? I know it's able to run sensorless but just thought I would ask.

I may be wrong, as I am unfamiliar with Castle, but it sounds like a 550 can motor. Depending on what vehicle you are running this in, but the Rs in only capable of running I believe down to a 5.5, but that would be in a 2wd, and I still would do it. In my opinion the Rs shouldn't be run with any motor smaller than 8.5, or you are pushing your luck..you could also ask this question here, and have a better chance of someone who was in the same situation: http://www.rctech.net/forum/electric...froad-151.html

It will run it BUT it will also overheat and thermal. The 4 pole motors should be ran with an Rx8.