Strafer® Chassis Kit (96mm Mecanum Wheels)


Drive in any direction with the Strafer® Chassis Kit! It utilizes mecanum wheels with diagonal rollers that allow it to drive sideways and diagonally in addition to conventional skid-steer style steering. It also features high-torque 312RPM planetary motors, ball bearing mecanum wheels, and everything else you need to make a rigid, low profile, extensively modifiable chassis you can reconfigure in any direction.

At first glance, you might wonder: where are the motors? Flip the chassis over to see four 312RPM 5203 Series Planetary Gear Motors seated cozily within its channel frame. These motors drive steel miter gears and heavy duty hub-shafts riding on ball bearings to make for low-friction holonomic action! Equip the included 96mm diameter mecanum wheels to give the chassis a theoretical speed of over 5.14 ft/sec.

Miter Gears
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 any chance of slipping, these gears rock a titanium nitride finish that helps them take on the toughest tumults of competition!

8mm REX™ motor shafts and hub-shafts facilitate fierce positive drive and smooth maintenance of gear assemblies.

96mm diameter goBILDA® Mecanum Wheels feature ball-bearing supported rollers, a narrow profile, and steel side plates. Each wheel measures only 207g—far less than other mecanums on the market! The reduced rotating mass yields quicker acceleration and puts less strain on motors.

Unlike other frames requiring exposed motion components, the Strafer Chassis can fit all these premium parts inside its highly configurable goBILDA® pattern 1120 Series U-Channel structure. 

Bill of Materials:

2 1120-0010-0264 x 2

1120 Series U-Channel (10 Hole, 264mm Length)

2 1120-0017-0432 x 2

1120 Series U-Channel (17 Hole, 432mm Length)

8 1201-0043-0002 x 8

1201 Series Quad Block Pattern Mount (43-2)

4 1522-0010-0030 x 1 1522 Series 8mm ID Spacer (10mm OD, 3mm Length) - 4 Pack
4 1522-0010-0060 x 1 1522 Series 8mm ID Spacer (10mm OD, 6mm Length) - 4 Pack
4 1611-0514-0006 x 2

1611 Series Flanged Ball Bearing (6mm ID x 14mm OD, 5mm Thickness) - 2 Pack

4 1611-0514-0008 x 2

1611 Series Flanged Ball Bearing (8mm ID x 14mm OD, 5mm Thickness) - 2 Pack

4 2110-0608-0002 x 4

Shouldered 8mm REX™ Hub-Shaft (20mm Hub Offset)

8 2320-4008-0024 x 8

Clamping Steel Miter Gear (8mm REX™ Bore, 24 Tooth, MOD 1)

25 2800-0004-0008 x 1

2800 Series Zinc-Plated Steel Socket Head Screw (M4 x 0.7mm, 8mm Length) - 25 Pack

75 2800-0004-0011 x 3

2800 Series Zinc-Plated Steel Socket Head Screw (M4 x 0.7mm, 11mm Length) - 25 Pack

25 2801-0004-0008 x 1

2801 Series Zinc-Plated Steel Washer (4mm ID x 8mm OD) - 25 Pack

12 2807-0811-0500 x 1 2807 Series Stainless Steel Shim (8mm ID x 11mm OD, 0.50mm Thickness) - 12 Pack
4 3213-3606-0002 x 1

96mm Mecanum Wheel Set (70A Durometer Bearing Supported Rollers)

4 3801-0613-0100 x 4

2-Pos JST VH [MH-FC] to 3.5mm Bullet [MH-FC] Adaptor (100mm Length)

4 3801-0709-0600 x 4

Encoder Cable, 600mm Length (4-Pos JST PH [MH-FC] to 4-Pos JST XH [MH-FC])

1 5027104001 x 1

Wera Tools 3mm Ball End Hex-Plus L-Key

4 5203-2402-0019 x 4

5203 Series Yellow Jacket Planetary Gear Motor (19.2:1 Ratio, 24mm Length 8mm REX Shaft, 312 RPM, 3.3 - 5V Encoder)


Weight 4149g (9.15lbs) Assembled
Version 6.0
Previous Version V5

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