At first glance, you might wonder: where are the motors? Flip the chassis over to see four 312 RPM 5203 Series Planetary Gear Motors seated cozily within its channel frame. These motors drive steel miter gears and bearing-supported heavy-duty hub-shafts to enable low-friction holonomic action! Equip the included 104mm diameter mecanum wheels to give the chassis a theoretical speed of 5.57 ft/sec.

The motors owe their compact position to the 90° drive created by steel miter gears inside each corner of the chassis. Alongside profile-matched bores and an incredibly secure clamping mechanism that eliminates the chance of slipping, these gears feature a titanium nitride finish that helps them withstand the toughest challenges of competition!

8mm REX™ motor shafts and hub-shafts facilitate fierce positive drive. The hub-shaft takes an all-in-one approach that elegantly minimizes the number of parts in the drivetrain, thereby maximizing reliability.

Unlike other frames that require exposed motion components, the Strafer® Chassis can fit all these premium parts inside its highly configurable goBILDA® pattern 1120 Series U-Channel structure. The repeating hole pattern throughout the structure means reconfiguring is limited only by one’s imagination. Move the cross-bars, the wheels, and more to make the chassis your own.

We put a little icing on the cake by swapping standard hardware with grade 12.9 hardware—yes, they’re incredibly strong! To sweeten the hardware a bit more, each screw has a dollop of nylon that helps keep it where you want it. Don’t worry; the nylon patch is a non-permanent solution, meaning when it comes time to move, modify, and rethink your bot, the screws can be removed and reused.

Step File

Spec Sheet

Assembly Instructions