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Showing results for tags 'Trial truck'.
Found 3 results
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I need help making a mini 6X6 trial truck, most of it is done but I need help on the front steering. I need one with drive and perpendicular suspension with no springs. -
My newest project is inspired by the American King of the Hammers style of off road racing. It is not strictly crawling and is also not strictly desert racing a la the Baja 1000. The vehicles need to be dual purpose. They need to crawl over some pretty unpleasant obstacles and also go all out on open terrain. You can even overtake other competitors during the race. I think this style of Lego vehicle can combine all that has been learned about trial truck and crawlers and combine them. I was most inspired by the appearance of the vehicle at the 1:40 mark in the following video. My KOH truck has the following -2 RC buggy motors -2 V2 IR receivers -2 LiPo rechargeable batteries -2 speed transmission from Sariel http://sariel.pl/201...utput-selector/ -Front and Rear Differential Locks from Sariel http://sariel.pl/201...ferential-lock/ -Auto valve inspired from TechnicBricks w/ onboard compressor -RC4WD Rock Crusher H/T 1.9 tires -Triangulated four links front and rear -telescoping drive shafts -9:1 axles -PF Med steering 5:1 with 8t on rack and Ackerman geometry I am currently mulling over Sariel's newer servo actuated three speed transmission. Initial tests showed that two RC Buggy motors had no trouble back driving the servo and so now I need to figure out how to overcome this shortcoming. The two speeds in the current transmission are not that far apart and with its weight the low gear was not low enough on some obstacles. These problems ought to be corrected by the update to a three speed, but it will take some more work to get there. I tried this transmission http://sariel.pl/201...linear-gearbox/ but the space between low and high was too great without a middle gear to bridge the spread. I am not sold on the benefit versus cost analysis of the locking axles as opposed to axles that contain a spool. I ended up compromising myself and breaking a cardinal rule of not altering parts. The front axle has a 2.5 stud axle and a 3.5 stud axle in it to achieve the track width I wanted. This could be alleviated if I had gone to a 2 stud wider front axle, but I didn't want to change the proportions that much. I don't have many other relevant pictures yet, but I will provide what people ask for. Comments, Questions, Concerns, or any advice is greatly appreciated. v/r Andy -
Here's a video of a truck I built during the summer. I am thinking about adding a similar type of roll cage to the cab of a moc I'm working on now. What do you guys think of this style of cab? -Something that I've noticed, is that in order to build a good looking external roll cage on a vehicle, you usually have to scale down the cab, or whatever your building around in order to make it look natural. What's your guys experience with roll cages?
