# Strafer® Chassis Kit (140mm Mecanum Wheels)

**Type:** Product page · **SKU:** GB-3209-0012-0002 · **Brand:** [goBilda](https://core-electronics.com.au/brands/gobilda)
**Page:** https://core-electronics.com.au/gobilda-strafer-chassis-kit-140mm-mecanum-wheels.html ([markdown](https://core-electronics.com.au/gobilda-strafer-chassis-kit-140mm-mecanum-wheels.html.md))

Drive in any direction with the Strafer® Chassis Kit! This version utilizes 140mm diameter mecanum wheels. (A

## Pricing

- **Price:** $1,339.95 (inc GST) — $1,218.14 AUD, exc GST
- **Quantity discounts:** 3+ $1157.23 (exc GST) · 6+ $1096.33 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 19 and Aug 24.

## Description

Drive in any direction with the Strafer® Chassis Kit! This version utilizes 140mm diameter mecanum wheels. (A [96mm wheels version](https://core-electronics.com.au/strafer-chassis-kit-96mm-mecanum-wheels.html) is also available.)

Mecanum wheels have diagonal rollers that allow the chassis to drive sideways and diagonally, in addition to conventional skid-steer style steering. This kit’s mecanum wheels are just one of the many ways it provides for the construction of a rigid, low profile, extensively modifiable chassis you can reconfigure in any direction!

**Motors**
At first glance, you might wonder: where are the motors? Flip the chassis over to see four [223 RPM 5203 Series Planetary Gear Motors](https://core-electronics.com.au/5203-series-yellow-jacket-planetary-gear-motor-2691-ratio-24mm-length-8mm-rex-shaft-223-rpm-33-5v-encoder.html) seated within the channel frame. These motors drive steel miter gears and heavy duty hub-shafts riding on ball bearings to make for low-friction holonomic action! The included 140mm diameter mecanum wheels give the chassis a theoretical speed of 5.35 ft/sec.

**Miter Gears**
The motors drive 90° steel miter gears ordained with positive-drive 8mm REX™ bores and a titanium nitride finish. Their mighty clamping mechanism and strong material proficiencies amplify the dependability of your big-wheel omnidirectional action!

**Shafting**
8mm REX™ motor shafts and hub-shafts facilitate fierce positive drive and a smooth assembly.

**Wheels** The [goBILDA® Mecanum Wheels](https://core-electronics.com.au/140mm-mecanum-wheel-set-70a-durometer-bearing-supported-rollers.html) feature ball-bearing supported rollers, a narrow profile, and steel side plates. The 140mm diameter provides **a massive 46mm of ground clearance** for avoiding and overcoming obstacles!

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

### Kit Contents:

 | QTY | SKU | Name |
|---|---|---|
| 2 | [1120-0010-0264](https://core-electronics.com.au/1120-series-u-channel-10-hole-264mm-length.html) x 2 | 1120 Series U-Channel (10 Hole, 264mm Length) |
| 2 | [1120-0017-0432](https://core-electronics.com.au/1120-series-u-channel-17-hole-432mm-length.html) x 2 | 1120 Series U-Channel (17 Hole, 432mm Length) |
| 8 | [1201-0043-0002](https://core-electronics.com.au/1201-series-quad-block-pattern-mount-43-2.html) x 8 | 1201 Series Quad Block Pattern Mount (43-2) |
| 4 | [1522-0010-0090](https://core-electronics.com.au/1522-series-8mm-id-spacer-10mm-od-9mm-length-4-pack.html) x 1 | 1522 Series 8mm ID Spacer (10mm OD, 9mm Length) - 4 Pack |
| 4 | [1611-0514-0006](https://core-electronics.com.au/1611-series-flanged-ball-bearing-6mm-id-x-14mm-od-5mm-thickness-2-pack.html) x 2 | 1611 Series Flanged Ball Bearing (6mm ID x 14mm OD, 5mm Thickness) - 2 Pack |
| 4 | [1611-0514-0008](https://core-electronics.com.au/1611-series-flanged-ball-bearing-8mm-id-x-14mm-od-5mm-thickness-2-pack.html) x 2 | 1611 Series Flanged Ball Bearing (8mm ID x 14mm OD, 5mm Thickness) - 2 Pack |
| 4 | [2110-0608-0002](https://core-electronics.com.au/shouldered-8mm-rex-hub-shaft-20mm-hub-offset.html) x 4 | Shouldered 8mm REX™ Hub-Shaft (20mm Hub Offset) |
| 8 | [2320-4008-0024](https://core-electronics.com.au/clamping-steel-miter-gear-8mm-rex-bore-24-tooth-mod-1.html) x 8 | Clamping Steel Miter Gear (8mm REX™ Bore, 24 Tooth, MOD 1) |
| 12 | [2807-0811-0500](https://core-electronics.com.au/2807-series-stainless-steel-shim-8mm-id-x-11mm-od-050mm-thickness-12-pack.html) x 1 | 8mm ID Stainless Steel Shim (11mm OD, 0.50mm Thickness) - 12 Pack |
| 25 | [2822-0004-0008](https://core-electronics.com.au/premium-m4-thread-locking-socket-head-screw-8mm-25-pack.html) x 1 | Premium M4 Socket Head Thread-Locking Screw (8mm Length) - 25 Pack |
| 75 | [2822-0004-0010](https://core-electronics.com.au/premium-m4-thread-locking-socket-head-screw-10mm-25-pack-gobilda.html) x 3 | Premium M4 Socket Head Thread-Locking Screw (10mm Length) - 25 Pack |
| 4 | [3213-3606-0003](https://core-electronics.com.au/140mm-mecanum-wheel-set-70a-durometer-bearing-supported-rollers.html) x 1 | 140mm Mecanum Wheel Set (70A Durometer Bearing Supported Rollers) |
| 4 | [3801-0613-0100](https://core-electronics.com.au/2-pos-jst-vh-mh-fc-to-35mm-bullet-mh-fc-adaptor-100mm-length.html) x 4 | 2-Pos JST VH \[MH-FC\] to 3.5mm Bullet \[MH-FC\] Adaptor (100mm Length) |
| 4 | [3801-0709-0600](https://core-electronics.com.au/4-pos-jst-ph-mh-fc-to-4-pos-jst-xh-mh-fc-adaptor-600mm-length.html) x 4 | Encoder Cable, 600mm Length (4-Pos JST PH \[MH-FC\] to 4-Pos JST XH \[MH-FC\]) |
| 1 | [5027104001](https://core-electronics.com.au/wera-tools-3mm-ball-end-hex-plus-l-key.html) x 1 | Wera Tools 3mm Ball End Hex-Plus L-Key |
| 4 | [5203-2402-0027](https://core-electronics.com.au/5203-series-yellow-jacket-planetary-gear-motor-2691-ratio-24mm-length-8mm-rex-shaft-223-rpm-33-5v-encoder.html) x 4 | 5203 Series Yellow Jacket Planetary Gear Motor (26.9:1 Ratio, 24mm Length 8mm REX™ Shaft, 223 RPM, 3.3 - 5V Encoder) |

### Downloads

- [ STEP File ](https://core-electronics.com.au/attachments/localcontent/3209-0012-0002_2204539b60b.zip)
- [ Spec Sheet ](https://core-electronics.com.au/attachments/localcontent/3209-0012-0002_spec-sheet_442761f47e8.pdf)
- [ Assembly Instructions ](https://core-electronics.com.au/attachments/localcontent/3209-0012-0002_assembly-instructions_439087dcbf4.pdf)
 
### Specs

 | Weight | 4881g (10.76lbs) Assembled |
|---|---|
| Version | 2.0 |
| Previous Version | [1.0](https://core-electronics.com.au/strafer-chassis-kit-140mm-mecanum-wheels-v1/) |

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/G/B/GB-3209-0012-0002-4.jpg)