Received my XO1 today... I was very excited.
I get home, unpack it and I was eager to get going. But I wanted to do a few changes first. I wanted to put my 21 pinion in, I figured it would be a nice middle ground between stock and that crazy looking 34.
While waiting for the batteries to charge I put a single 3s in it and drove it around the house at walking speed. Big turning radius on this. I picked it up and revved it for the wife to show her the telemetry, and noticed the wheels shaking.
I balanced the wheels, then decided to put my gyro in it. Quick check of all the screws, installed the front splitter and I'm RTR. I headed out for a test run, still in locked mode.
Car drives fantastic! Needed a bit more front preload. Had to dial the gain down a touch on the gyro, but it tracks straight, I can get into the throttle deep and it just blasts down the street.
Then I worked on braking, too much. Slid the adjustment down to 50%, too little! Back to 68 ish, now I've got nice smooth brakes. Steering was way touchy at speed, so I added in some expo. The radio is just a pleasure to make adjustments on. I love seeing the volts and temprature. Although...
The temprature is just the surface temp. If you do a run then stop, it'll rise while the car is just sitting there. Blast down the street, and the temps drop quickly.. but the rotor is still holding heat. You can't expect the actual internal temps to move that quickly.
The speed limiter is funny, it cuts the throttle like a rev limiter on a full size motor. So it bounces off the limiter, sounds like I'm pedaling the throttle, zing zing zing! Whats weird is it claimed 70 mph locked, then I unlock it, and it goes faster, but still says 70 mph... I like the tachometer, but the speed is nonsense, I'll be getting the GPS for actual speed.
I'll be suspicious of any high top speed claims without the GPS. But it sure seems stable enough to hit ridiculous speeds.
The car understeers, so I'll be thickening up that rear diff soon. Stiffer springs would be nice, but I might just start with oil.
Traxxas did redesign their hexes, they don't have the same slop as the ERBE. The steering looks better, but turns sharper to one side than the other.
Neither of my ******* packs are a straight drop in. Its too early to take the dremel to the car, so I'm running stock batteries for now. That big motor is thirsty though, I could use more AH. It could use some lights too.
All in all I'm very impressed, and I'll probably jump up to the 34 pinion soon. No flips out of mine, but then the gyro keeps things straight, I can go full throttle and full brake at speed without drama.
Big thumbs up to Traxxas on this one. A little overpriced, but a heck of a car.