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JJ2 posted a topic in LEGO Technic and Model TeamHello everyone, This is my newest creation, it is my forth MOC using non-Lego parts in its construction. I started this project when I bought some rear and front hubs from the Traxxas Rustler to try to fit them with Lego, it turns out that the rear hubs are almost exactly two studs wide and the front ones are about 1.5 studs. I also am using 2.2" wheels with the hubs, they are really grippy and are much better then Lego ones. Unlike my last MOC that had a full body with almost no gaps which ended up weighing about 1/4 the cars weight I went with a more simple design to save weight. IMG_1453 by JJ2Sam, on Flickr IMG_1454 by JJ2Sam, on Flickr It uses Traxxas 550 12T motor for drive, Hitec HS-322HD servo for steering, a hobbywing quicrun ESC 1060, a FLYSKY FS-GT3B remote, and a 7.2v 2000mah battery. IMG_1455 by JJ2Sam, on Flickr IMG_1457 by JJ2Sam, on Flickr It has full independent suspension on the rear and the back but the back uses Lego dampening springs to stop it from bouncing around during high speeds. Unlike my older MOC's this uses bearings for all of the drivechain components to stop friction, in fact without the motor mounted I could free-spin the wheels because of the low friction. With no surface to rub against no parts were damaged on the drivechain except early versions of the parts to adapt the Traxxas universal joint to Lego. IMG_1467 by JJ2Sam, on Flickr IMG_1468 by JJ2Sam, on Flickr The total drive ratio is 9:1 with the 12T gear on the motor going to a 36T that goes to another 12T to the 36T differential, this gives it a lot of torque and acceleration. When I designed the chassis I wanted to place the heavy components as low as possible and the motor ended up the same level as the bottom plate with the battery just 1 stud above it. Because of this I can turn at high speeds an it no flip over, there were a few times I would hit a large bump or rock in the road and it would simply skid around not flip. IMG_1458 by JJ2Sam, on Flickr IMG_1459 by JJ2Sam, on Flickr The steering on this is much better then my last ones and has a pretty good radios for its size, I am using a rack and pinion setup with turnbuckle steering links that allow me to adjust the toe-in or out, I set it to have a small amount of toe-in and with that it can stay going strait for a long time at high speeds. I have used a GPS app on my phone and it says the top speed is 24.9mph or 40kph