Servo wheel 4.0

by obijuan, published

Servo wheel 4.0 by obijuan Mar 25, 2012
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This is a new version of the parameterized Servo wheel for mobile robots:


These are the wheels used by many printbots such as Miniskybot or Scout. The improvements of the Version 4.0 are:

  • Adaptation to the 3 types of Futaba 3003 servo horns: rounded, 4-arms and 6-arms
  • New drills for attaching the horns. Now it is easier to screew the horns to the wheels

The sources are stored in the Miniskybot 2 github:



  • Choose the kind of servo horn you want to use
  • print the servo wheel for that horn
  • Screw the servo horn to the wheel using the standard screws that come with the servo
  • Put the O-ring around the wheel
  • Attach the wheel to you robot!

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What size O-rings are used for the tyres?

I'd like to know too. What size of o-ring is used for the outside?

Sweet - this looks ideal for printed pulleys for an R/C glider "mad elevator" setup too: http://vimeo.com/27666543http://vimeo.com/27666543

Excellent! I had it on my list to make these but didn't have the 4 or 6 arm versions to measure, and I hadn't gotten around to adding the holes for the round one (which is what we have). Thanks!

With these you won't have the problems of the ProtoBot ones... I have to make them in OOML :D