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Found 1 result

  1. Hi! I made a few crawlers until now, and I wanted to create something new, with more fun. So I decided to add a lot of power in a lightweight chassis to be the crawler fast, but also capable. My goal was to make the most simple and effective Lego rock crawler: http://www.brickshel...ry.cgi?f=538615 I used a flexible frame as suspension, this helps to keep it lighter, there is no need for a lot of parts to create a 4 link or other suspension. As you can see below in the video, this "suspension" also works well on terrain. Has LiPo battery, and V2 IR receiver. There are two receivers, two XL motor is connected to each, there are 4 XL motors in total. After the motor's output, a 24:12 gearing (deceleration) is built in, so the wheel spins about 85 rpm, which allows to reach 1,7 km/h. The wheelbase-width ratio is similar to real RC crawlers. I tried to add a big ground clearance, there was no problem with it. It's an advantage of this flexible chassis, there is nothing under the middle of the vehicle. The wheels are RC4WD 1,9" Rock Crusher XT's, their weight helps a lot of the stabilization of the vehicle. The XL motors are placed low, they also help to have a better center of gravity. I added a simple body, with more crawler-like look, than in my previous crawlers. Steering: One M motor steers the two XL motors in the front axle. These motors are connected to mini turntables to be more stable and robust. The steering ratio is 5:1. http://www.brickshel...16_1280x960.jpg I used strong pins from 8842 to make stronger connections in the axles. All the motors and the main parts are connected together with these: Weight: 1105 g. I don't know yet the number of pieces, but it can be about 200. A 720p video: Most interesting parts: 01:11 ; 01:37 ; 03:16 What do you think?