The conversion Revo is at the top of the fun list, another great day of RC and we are still at it, got lights on the 4x4 slash and I'm still buzzing the campground, the Vel has issues, I wish I would have read up on it more before I bought that motor, I picked up the roller off ebay and could have easily have put a Castle product in it, I just switched motors from the 2wd brushless and the temps are down, same pinion gear, a 14, but what happens is after bashing for a while when you stop it needs a nudge to get going again, come to find out after reading in the slash section this is an ongoing issue. My Bad, Take notice new people, read up on stuff here before buying hop ups, I thought the Vel was a soild brushless motor, Wrong, it's got issues. I could have known that if I had just done some research, that's one of the drawbacks to the ADD and the OCD, met a really nice guy today, big Traxxas guy, 14 trucks, Cars and the Boat. He was impressed with the fleet and it was good to talk RC to a live person that is sick like me, lol, I told him to come in here and check things out, his name is Rick, hard core Nitro guy but after seeing he conversion in action he was thinking it over. Downloading the instuctions on the Flysky, trying to take some of the steering input out of it, can't figure it out yet, any flysky guys that can offer input would be great. Got to put a log on the fire. Peace my friends.