May 20, 2007

More High Mobility Vehices


Joining vehicles like LNE and 222Doc's TriTracks, I recently found out about two new "LEGO High Mobility" entries that I thought folks would like to see: Andreas Dreier's monsterous 3-NXT Crawler, and Michael Brandl's slightly smaller LCB (LEGO Chaos Bot). Both are really wonderful looking treaded vehicles, using a whole bunch of those new treads first seen on the #8272 Snowmobile set. Both look like they have an even greater terrain-tackling ability* then LNE, with four independant tread systems that each can be tilted. LCB can rotate the front of back flipper treads independantly, as well as drive the left or right side for conventional skid steering. Michael is working on detailed BT remote control, and can already drive it around some and is testing out its abilities. Notice how the old Mindstorms motorcycle wheels act as super-large driving hubs for the treads, and the use of the new yellow large hubs in the flipper treads. I'm not sure as yet what the two touch sensors are for. Andreas's Crawler is a huge mobility platform, with a flat top formed by the three networked NXT's he needs to control the eight independant motors in the beast. In his solutions, he seems to have abandoned the stock hubs altogether, instead driving the treads using ganged 40t gears. Each drive tread can be driven and rotated independantly from the other three, allow it to lift just one corner of the vehicle or various other exotic options. The downside is I'm sure trying to control all eight motors - manually I think it would be too difficult a task, so some degree of automation will probably be required. But, then again, that's why using Mindstorms for this is ideal - these are not just remote control toys, but can be made autonomous or semi-autonomous to suit the situation (like when the human driving them lacks eight hands). Of course, that "free spirit" can get them into trouble as well... LNE was recently caught making an escape attempt, for instance.

Great work, and I can't wait to see more of them.

--
Brian Davis

*At least, they'll be able to tackle terrain better if the treads don't slip. Yeah, traction is still a problem, but with 222Doc's glue-on rubber and my use of PlastiDip, things are looking up. And I'm sure there will be other solutions as well.

5 comments:

David Levy said...

Brian,
Nice new video of the LNE Escape. What software do you use for editing? I like how you maintain continuity by having the vehicle drive in and out of frames. Every shot seems well planned - the camera is steady and no crazy zooming during the shots.

dl

Rick Rhodes said...

Brian,

You really need to highlight your "LNE Escape" as a separate post. It's too good to bury it in a narrative about something else!

Rick

222Doc said...

I though i seen LNE going down the wash behind my house it might be heading for the river. It might be tring to get to mexico from there. If anyone see's it be carefull its ARMED and treaded.

Maniac of Mayhem said...

Totally awesome video of LNE, I love the ending, very appropriate.


...Oh, and those other robots were nice to. But I think LNE stole the spotlight:)

Brian Davis said...

Well, I didn't want LNE to steal the spotlight - that was just a teaser for the folks reading in depth :-|. Well, enjoy Michael & Andreas' offerings as well, they really are wonderful machines... and if folks like the new LNE video, great, i'll try to give the a post of its own soon to answer some of these questions.

--
Brian Davis

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