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Showing results for tags 'speed record'.
Found 2 results
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[MOC] Tractrike RC2 Record Racer 35 km/h+
Marxpek posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Hello everyone, here is another attempt of mine to improve the speed record, i have just done the first test runs and managed to get it up to 32,71 km/h, which already is an improvement to my previous record of 28,47 km/h with a single rc-unit, but there is more power left. when i find more time and a better track i hope to squeeze a bit more out of it. This thing has 2 rc-units on the same channel, all 4 motors are hard-coupled and geared up 1:2,5 on the single drive axle, spinning the trac 5000 tire at insane speeds. The test run was measured with a bryton 100e gps device and also caught on film, but sadly the car is not in the shot most of the time, i'm cycling, filming and steering the car all at once, which is kind of hard, but when i find more time i will try to push it a bit further and hope to get a better shot (or way to shoot it, if anyone has suggestions how to film i would be glad to hear, here is a picture of my current setup) UPDATE: the design is final with only a bit of weight reduction done, at the top of this original post you can find my new video of it going over 35 km/h. -
LEGO Land Speed Records
BusterHaus posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
I built a small vehicle for a speed trial and started thinking about LEGO speed records. There's no official tally of speed records achieved with LEGO vehicles. There are some impressive results, such as Sariel's Torpedo Trike and jaumeBCN's 27km/h car, but they are not tested according to any official rules. The first problem lies in measuring the speed. You can strap a GPS to the vehicle, adding weight, but giving you a very good reading. You can run the vehicle over a known distance and time it with a chronometer, risking mistakes in your readings. There are a number of relatively cheap (under $100) radar guns available, but most people build one or two models for attempts at speed records and probably would rather spend the money on bricks. The second issue are the test conditions. In automotive land speed trials, "the accepted record is fastest average speed recorded over any one-mile or one-kilometer distance, averaged over two runs in opposite directions (to factor out wind) within one hour of each other." Since we won't see a sudden invasion of the Bonneville Slat Flats by LEGO builders, the easiest way to control the conditions would be by doing the speed tests indoors, like in a not-very-busy shopping mall. This would have the added benefit of a smooth surface, increasing the measured speed. Here is a list of elements to standardize: method of measurement, number of runs required, acceleration distance allowed, distance of the speed run and accepted components (including lubrication). There are probably ones I've missed. Please let me know your thoughts about this.