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Hi Lego Technic enthusiasts I'm new at this Forum and wanted to show you my Lego Technic Tumbler. Tell me if I did something wrong with the post/sections/whatever! :P I've seen lots of Tumblers on Youtube, but I'm quite shure that no one built an AWD-version. So this is what came out after three months of studying how this could be possible. Due to school I couldn't spend much time with building, I think in total I had about 30 hours. -Key idea: Using the old flex system for the steering -Weight: 1400 grams (without battery box) -Length: 42 cm -Width: 24 cm -Suspension -AWD -Shooting cannons at the sides -rockets that you can swing out -LEDs -RC -No slipping gears, perhaps I should have used two XL-motors Just watch the film on youtube: Thanks for reading! :)
I have been interested a lot in the flex system lately and have been reading about it a lot. It seems very useful, but unfortunately I do not have any. The one major problem that the flex system is too flexy and most of all too weak. It is merely a great idea that has not reached its full potential, but the coolest thing made with the flex system is Marvin G.'s 1:7 scale super car IMHO. The braking push-pull system is ingenious, but if it was motorized by say a pf motor, the flex system would not be able to handle the torque, but a linkage even with 1 x 6 or 1 x 9 links is much less realistic. So I am proposing metal flex cables for many uses including steering, braking, etc. They would probably be relatively easy to make (or even find at Lowe's) and would be much cheaper than the discontinued plastic ones, so the only real expense would be the connectors which are much less expensive. I wish Lego had more spur gear sizes though, I want to make a trail bike with working gear shifting and brakes like this. I think this would be a perfect use for the flex system and just wish the cables could be stronger. Sound like a good idea? Please feel free to post comments and criticism, and just hope Lego is reading this!