MoonCZ Posted May 20, 2015 Hi guys, This is my LTR (Lego Technic Rally) car, which i have build a few years ago. It has independent suspension on all wheels and it is all wheel drive. Because it is for rally i have used two RC motors for propulsion and experimental gearbox (low gear for offroad, high gear for flat roads and downhills). As you will see in video everyone use cable remote, it's because of RC motors power consumption (in that time there wasn't V2 reciever) and weight. This car no longer exist, but i still have the chassis without gearbox. Remotely controlled functions (cable): Driving (2 RC buggy motor) Steering (http://www.peeron.com/inv/parts/47154) Gearbox (M motor) Propulsion: slower RC motor output to gearbox ( 1:1, N, 12:20) and then 20:28 (differential) Steering: 12:20 to 8:steering rack Weight: about 850g Speed: (fast walk) :-D Brickshelf gallery: http://www.brickshel...ry.cgi?f=490253 Video(from the Race): Front: Back: Bottom: Share this post Link to post Share on other sites
PKW Posted May 20, 2015 I dreamed about these races for years you were a lucky person because you joined it, your car si really interesting, i searched photos of all the veichles and i noticed that along the races the best cars has a chassis similar to the gray off-road suv of that years, like yours suspension, is kostky organizing new races? They was awesome! Conratulations for the design, all those wire-drived have surprising performance vs PF but de Have to say that RC unit was forbidden by the rules Share this post Link to post Share on other sites
MajklSpajkl Posted May 20, 2015 Wow, those rally cars are awesome! Do you have some photos of the controls? What BB were you using and what cables? Were there many broken parts after the race? Oh, And how many broken legs because of running wild after those speeders? :-P Share this post Link to post Share on other sites
MoonCZ Posted May 20, 2015 (edited) Sadly this was the last organized LTR. Now we have only LTTT (LEGO Technic Truck Trial http://www.brickshel...llery.cgi?m=KTT) which have very strict rules. The suspension is based on Shmade's car: http://www.kostky.or...ach=66650;image Even the RC unit can't deliver that much power to RC motors, we have used one batterybox for each motor and from motors/BB's have been removed safety termal fuses. We mostly use standard lego 9V cables, and any BB's that are available, here is pic of my controller http://www.kostky.or...ch=105608;image Broken parts sometimes happen, but not that often, from all races i have been i had only few broken pins, and exactly 4 worn axles :-D Edited May 20, 2015 by MoonCZ Share this post Link to post Share on other sites
zux Posted May 21, 2015 Wow, I love events like that! What was the reason for that LTR being the last one? Do you mind sharing a link to your LTTT rules? Share this post Link to post Share on other sites
MoonCZ Posted May 21, 2015 (edited) LTR ended because Shmade (organizer) have no longer time to organize it. Here is link for the LTTT rules, but it is in Czech so you have to use translator: http://www.artpeter....al/Pravidla.php , they are based on real czech truck trial rules. Edited May 21, 2015 by MoonCZ Share this post Link to post Share on other sites
Zerobricks Posted May 23, 2015 (edited) You removed safety fuses? No wonder those things are so fast! Edited May 23, 2015 by Zblj Share this post Link to post Share on other sites
