A trike with remote control and huge wheels from chain elements
About this creation
The ChainRider is a trike featuring two huge wheels, remote control, and, i dare say, excellent drive properties. It is made entirely from a single LEGO set 8275, but appears to be much more fun in playing than the bulldozer!
Credits go to my son who observed that the chains could be used to form stiff rings when turned inside-out. Subsequently i made two huge wheels from the chains. Using the small Power Functions motors for their higher rotating speed, and directly mounting them on the wheels, a theoretical maximum speed of about 11 km/hr is achieved.
It took a couple of attempts to fiddle the battery box and hence the center of the mass, which heavily affects the driving behavior in turns, and also determines how easy wheelies, flips and stand-ups can be performed. See the YouTube movie: ChainRider.
In case of a crash the battery box would come off in an earlier version, which prevents breaking some parts i thought, but fixing it got so annoying (yes, lots of crashes :) that in the current design the front wheel usually comes off, which is easier to fix.
The engine is just added for the looks, like the seat and the wheel caps.
I observed that the front wheel gets battered over time by all the hits in landing after a wheelie or flip.
I took pictures when i took it apart, so you can rebuild it yourself! There are 138 pictures in a photobucket album called ChainRider for that:
Please use the slideshow in reverse. Use the pause/play button to proceed and build along!
Make sure you start at a picture showing two small power function motors.
This is the most playable model i made so far, i think. The kids can drive it for hours.
For more grip I wrap rubber bands around the chain wheels. It also depends on the ground material and if you want to drift and slip or if you want to do wheelies and flips.
Rtas 'Vadum: the wheels do not collapse normally. Only if you crash into a wall the chains in the wheel may occasionally spring open. Nothing irreversible though, ie no permanent damage. A single rubber band is enough indeed, provided it is a wide thick one, typically used at eg post offices.
December 13, 2010
Two questions: do the wheels collapse and does one rubber band give you enough traction for wood or tile floors?
i have a few questions
What is your first name?
where are you come from?
i have got 8275 motorized bulldozer and 8258 crane truck. i do not have much inspiration by myself so i make other creations from the internet, so I want thank you for making much creations and post them online.
Thanks for your comment Brandon.
The order was weird indeed, so i included rather complex instructions on this page, did you use these?
Either way, I re-arranged the album on PhotoBucket now, sorting it on filename.
Now the link on this page should work, but let me know if it still does not work for you.