SNIPE Posted January 18, 2015 Posted January 18, 2015 Hi all After getting the 42038 Artic Truck, I played around with the track links and noticed that if you make a loop with all the tracks inverted, it can compress, but spring back to its original shape, and so I figired if I had the tracks jammed between some rollers on the underside and on the topside is a sprocket, it will have a motor per wheel and very high ground clearance. I have made a mockup of 1 wheel, it is fairly smooth running but needs stabilizing a lot, the wheel wobbles around. I think having two sprockets on the top then a roller in the middle on the underside might be better (like a triangle shape). The good thing is the wheels change shape depending on the surface it is driving on, the wheels in the mockup are quite hard to compress so just add more links to it. Heres the pics: Now since i'm too busy to start building this I'm just gonna leave the idea out here and see what happnes, I have my 42029 project on the go already... I'm sure somebody willl make something cool out of it, post ideas and builds below!. Regards, Snipe Quote
aminnich Posted January 18, 2015 Posted January 18, 2015 I too noticed that you could make a wheel if the track was inverted. But I never thought about literally making it a wheel. Great thought!!! Quote
darsedz Posted January 18, 2015 Posted January 18, 2015 (edited) some idea for a bike maybe? a big bike ;) (image resized...) Edited January 18, 2015 by darsedz Quote
Rascko Posted January 18, 2015 Posted January 18, 2015 Hmmm, couldn't it become a good idea for something like space rovers, like Lunokhod or Curiosity? Btw, It could give enormous road clearance. Quote
andythenorth Posted January 18, 2015 Posted January 18, 2015 You've invented something like a top-roller-drive Rolligon http://www.trucksplanet.com/catalog/model.php?id=1294 http://www.unusuallocomotion.com/pages/industrial/rolligons-and-terra-tires.html Quote
rollermonkey Posted January 18, 2015 Posted January 18, 2015 I think you'd have to be careful, though. Any vehicle big enough to use 4 of these might be heavy enough to break the snap connection between links. ...and a flat tire would be devastating. Quote
SNIPE Posted January 18, 2015 Author Posted January 18, 2015 I have sat on it and it did not break, the two sides can actually meet together without it breaking :D Quote
Milan Posted January 18, 2015 Posted January 18, 2015 I have sat on it and it did not break, the two sides can actually meet together without it breaking :D Never thought that it could be possible. Quote
rollermonkey Posted January 19, 2015 Posted January 19, 2015 I have sat on it and it did not break, the two sides can actually meet together without it breaking :D Seriously? Wow! OK then, I guess the only challenge is to make it light enough not to sag, then. Quote
Omikron Posted January 19, 2015 Posted January 19, 2015 (edited) Hmmm, couldn't it become a good idea for something like space rovers, like Lunokhod or Curiosity? Btw, It could give enormous road clearance. No, the dust and sand will build up and block rotation. Edited January 19, 2015 by Omikron Quote
DrJB Posted January 19, 2015 Posted January 19, 2015 I too noticed that you could make a wheel if the track was inverted. But I never thought about literally making it a wheel. Great thought!!! The idea has been around for a while, especially if you've been following GBCs Quote
aminnich Posted January 19, 2015 Posted January 19, 2015 I don't usually follow GBCs, but I think I might have to look into them Quote
Rockbrick Posted January 19, 2015 Posted January 19, 2015 very cool - I have wrapped tracks like this to the outside of wheels before to make 'snow chains' sort of but hubless on its own - something light like a mars rover will keep these elliptical or round even but something heavy is going to require more than 4 wheels Quote
Blakbird Posted January 19, 2015 Posted January 19, 2015 Nico71's braiding machine uses an inverted track loop for the main drum. Uses 48 tracks and is about the smallest diameter you can make. Quote
aeh5040 Posted January 20, 2015 Posted January 20, 2015 It's been done: http://www.eurobrick...showtopic=66099 Quote
Rockbrick Posted January 20, 2015 Posted January 20, 2015 so have diggers but you don't stop seeing plenty of MOCs of them bring it on... Quote
SNIPE Posted January 20, 2015 Author Posted January 20, 2015 (edited) It's been done: http://www.eurobrick...showtopic=66099 No, I don't mean that. The outside of the chain ring is being driven not the inside, and the drive is on the top of the chain for huge ground clearance. There is 4 chains which act as wheels. Edited January 20, 2015 by SNIPE Quote
DrJB Posted January 20, 2015 Posted January 20, 2015 ... Uses 48 tracks and is about the smallest diameter you can make ... Not always 48, it depends on whether you're using the old or new design. One of them folds back more than the other ... Quote
Ode Posted January 21, 2015 Posted January 21, 2015 I have used this kind of wheels, with central hub, for old-time farming equipment. They look and work great. Quote
aminnich Posted January 21, 2015 Posted January 21, 2015 I like the looks of that on a tractor! Quote
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