As we all know, the major drawback of the new TECHNIC Link Treads, is their tendency to slip over very smooth surfaces, like a glass or a mosaic floor.
I've read several suggestions to overcome this behavior, from custom made rubber pitons that fit into each tread correspondent pair of pin holes, to the attachment of a TECHNIC Rubber Bumper through the respective holder...
Today, jcbarros71 came up with an ingenious but at the same time very simple and effective solution, to turn around this problem.
He added small regular rubber bands on alternate link treads, in order to prevent the treads to slip on those very smooth surfaces.
See how it behaves on his video below, and the good results obtained!
I'd prefer to see it also turning left/right, instead of just moving forward. But read that this video was from a first implementation attempt, at which just one motor of the same kind was available.
The image on the right, is from a 2nd version using different motors ('M' and 'XL'), which obviously turned much more difficult to control and move straight. This one also got rubber belts in every tread, in opposition to the alternate method applied to the model on the video.
Nevertheless even with this limited demonstration, it is easy to admit how beneficial and effective this solution should be, also at broaden range of movements.
For the 'How to' detailed instructions, observe the image below.
Fortunately the existing space between consecutive treads is enough to accommodate the rubber band in between. Otherwise it would be just a good idea, with no practical use.
If the rubber bands are used in all treads, extra care in their placement have to be taken, in order to avoid the rubber bands in one tread be placed directly in font of the other. That would require that space between treads to be twice the belts thickness, which is usually not the case. So they should be suited in some sort of "V" shape, or otherwise used just at alternate treads (like on the video above).
Despite the solution here presented, being made with non LEGO parts, it should be also possible to implement using LEGO rubber bands. Probably with a more neutral color combination (e.g. black rubber bands over the also existing black treads coming with set 7645, from Mars Mission theme).
Some other advantages, I'd like to mention:
- Most of tread scratches caused while running treaded vehicles on the floor, can now be also avoided with this practical idea.
- This constitutes a simple and very economical solution, accessible to everyone.
Meanwhile J. Barros produced another video, to show how his solution performs when turning (turning a lot...).
And let me say that for a glass surface, the result looks really good!
Last Update: 2008.Oct.16 22:47 GMT