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(...) Ah, sort of the 18-wheeler approach to carrying heavy loads. That's not a bad idea; certainly it solves the axle-support and skid-steering problems. But it makes the steering code a much harder problem, doesn't it? I can imagine my poor bot (...) (19 years ago, 9-Dec-05, to lugnet.robotics, FTX)
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| | Re: How much weight can a LEGO chassis carry around?
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(...) It might work to make a robot that tows the laptop on a trailer setup? At a parent night at my school, I towed small children on a trailer (a couple of physics crash carts that they stood on like skatebaords), using a simple robot driven by (...) (19 years ago, 9-Dec-05, to lugnet.robotics)
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| | RE: How much weight can a LEGO chassis carry around?
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What about mounting the laptop on a caster platform similar to the syncro platform mentioned earlier, but without all of the drive components. A single set of drive elements, mounted in the middle of the platform, could provide locomotion, while (...) (19 years ago, 9-Dec-05, to lugnet.robotics)
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| | Re: How much weight can a LEGO chassis carry around?
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(...) Yes, that's not a bad idea -- nor is the synchro platform, except that that seems a bit complex (and expensive) for me. If I wanted complex and expensive, I'd be building the chassis out of Lexan or aluminum instead of LEGO. :) The trouble (...) (19 years ago, 9-Dec-05, to lugnet.robotics, FTX)
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| | Re: How much weight can a LEGO chassis carry around?
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(...) I don't see how that solves any problems. (...) How? The trailer still has to have a bunch of axles in order to spread the weight - and when you do that, the trailer is (in effect) skid-steering. (...) That's the cool thing about using a (...) (19 years ago, 9-Dec-05, to lugnet.robotics)
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| | Re: How much weight can a LEGO chassis carry around?
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Apologies if this double-posts, Yahoo is in a mood. I solved your problem by purchasing the lightest laptop I could find, a Sony ultralight (PGC 161L, $800 on ebay). It's a hair over 2 lbs, and I've used it on a couple projects: (URL) has a built-in (...) (19 years ago, 10-Dec-05, to lugnet.robotics)
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| | Re: How much weight can a LEGO chassis carry around?
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Dan, I remember seeing this robot. I didn't remember that you built it, but its impressive. OT Comment: Can't use $ony products anymore though I think you underestimate the ability of Lego for strength. Construction techniques make it possible to (...) (19 years ago, 10-Dec-05, to lugnet.robotics)
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| | Re: How much weight can a LEGO chassis carry around?
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If they can build bridges that can take a few something like 28-30 kilos of weight, then handling a laptop is not impossible. It would really be a matter of doubling up load-bearing beams and supporting them with the right structure, being aware of (...) (19 years ago, 10-Dec-05, to lugnet.robotics)
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| | Re: How much weight can a LEGO chassis carry around?
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I built a laptop roving wireless web controlled robot 4 or 5 years ago. Check it out at: (URL) (19 years ago, 11-Dec-05, to lugnet.robotics)
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| | Re: How much weight can a LEGO chassis carry around?
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Amnon, Wow, you beat me to the goal by miles.... but I will still probably do this, just because... its a Lego thing :) (...) (19 years ago, 11-Dec-05, to lugnet.robotics)
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| | Re: Heavy load on LEGO chassis over uneven ground
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(...) Another thing to consider when carrying so much weight is the gear ratio and motor power required. An under-powered robot with excess shaft friction will not drive in a straight line! I built a strong robot chassis a few years ago using 12V (...) (19 years ago, 11-Dec-05, to lugnet.robotics)
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