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Showing results for tags 'rc crawler'.
Found 3 results
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Blue Rock Crawler
Tamas Juhasz posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
I present my latest crawler: http://www.brickshel...ry.cgi?f=545871 It's main concept is similar to my previous crawlers: nothing unnecessary part and weigth, as simple and reliable technik, as it can be. The chassis is enoug flexible to do this: http://www.brickshel...Crawler/021.jpg - so you don't need more advanced suspension in this concept. Two XL motor drive, one M motor steers the vehicle. For power supply there is one LiPo battery and a V2 receiver built in. The front part is heavier, thanks to the small wheels in the front rims and the ship weight. The chain holds the weight in position. This crawler also has the usual rock crusher tires, in my case, from RC4WD. The body is partly from the 8437 official model: http://www.bricklink...em.asp?S=8437-1 http://www.brickshel...Crawler/001.jpg I lookde around my room in the beggining of body building time, and the 8437's body in my showcase just gave himself to connect with the chassis. I wanted to make a tubular body/frame. Has a fake L6 motor in the back too: As video, there is the first part (from 00:40 to 20:55) of this video: (720p) This was an RC track test, for more information see this topic: http://www.eurobrick...showtopic=97879 I made it in LDD, this is the instruction: http://www.brickshel...crawler-no4.lxf Feel free to ask or comment. -
Fast RC crawler - 4XL motor
Tamas Juhasz posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
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? -
Simple Rock Crawler for extreme terrain (PF RC)
Tamas Juhasz posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Hello! I present my latest crawler: http://www.brickshel...ry.cgi?f=538333 I wanted to make something totally new crawler construction. During the last months, some variation was made (little upgrades), this wast he first: My goal was to made a very simple and reliable crawler, which is able to take apart in competitions. It was succesful in Malug crawler races. Crawlers are relatively free-made, so the bodywork isn't made after a picture from reality. One important thing: you may noticed, it has a relatively large wheel base. To have the good wheelbase/ground clearance ratio, I also increased ground clearance. All depends on the terrain, it can be as good as short wheelbase. With a long one, it's more stable against falling backwards. It has "no" suspension, the chassis is strong enough but felxible to give articulation for the axles: (this makes it simplier) The next varation (V2) was made with longitudinal strenghtening to prevent the decreasing of ground clearance in the middle: The non Lego tyres: RC4WD 1,9" rock crusher XT. The chassis shows the innovation: It's driven with two XL motors (in the axles), on M motor steers. The additional M motor and ship weight in the front axle is only for weight, they have no functions. More weight on the front axle helps a lot in terrain. The bodywork in not too strong, but who cares with that in a crawler. Lightweight construction was important. In the video below, you can see some high-speed recording about a falling of a piece from the body. More pictures: In competition: http://www.brickshel...ler-No2/019.jpg http://www.brickshel...ler-No2/020.jpg http://www.brickshel...ler-No2/021.jpg Video: This is totally different than my previous videos. Was made with 30 fps (instead of 10) and 1080p HD resolution. I don't say, I will make every video in this way (requires a lot HDD space, sometimes unnecessary), but the more important or bigger mocs will be recorded similar. So the video: Hope you like it.