VR Driver Simulation Prototype – An Introduction to “Moki”

“Whatever the mind of man can conceive and believe, it can achieve.” — Napoleon Hill

In Aug 2016 a start was made to build a proof-of-concept prototype. Here is a pictorial summary of this amazing story. Kellie jokingly christened it “Moki” as it has somewhat assumed “the other woman” status, given the time spent in the workshop on it! Turns out this cutsie name is now a generic NZ Maori term for raft, but originally meaning a large raft built from disparate materials in preparation for more difficult voyages to unknown / far-off places. How apt!

“Imagination is everything. It is the preview of life’s coming attractions.” – Albert Einstein

Most Recent Video (Scroll to bottom of page for more)

17/05/17 (3 min) Maiden Voyage with Chris – 1st ever human passenger. Some rough edges, eg controller stickiness (better potentiometers coming), clunking from base pads (will put elastomeric membrane under them), and the accumulator is not yet fitted and will make it faster and smoother when it is. But not bad for a first go! Further experimentation soon resolved minor glitches and “clunkiness”, but you will see all that in a future video when other items completed…

“I have been impressed with the urgency of doing. Knowing is not enough; we must apply. Being willing is not enough; we must do.” – Leonardo da Vinci

(if on a PC you don’t see pictures below, Press Ctrl F5 to fully reload the page)

Main Construction Phase
Click to go to: Construction ; Hydraulics ; Electricals ; Operational ; Old_Videos

  • Journey began at Pickles Auctions

  • Bit squeezy, but got it in the shed.

  • Dismantling starts

  • Dismantling continues

  • engine - going into a dune buggy in Wollongong

  • A look inside Moki, cute eh?

  • front panels went to a panel beater in Brisbane

  • a lot of angle grinding => front sub-frame cut off

  • How to weigh a car with bathroom scales...

  • how heavy stuff moves around

  • Rear support points with anti-compression spacers

  • That Bunnings Ozito 9 inch angle grinder is a real beauty

  • custom fitting cabin main hanger point

  • main arm being assembled

  • Car cabin carrying frame welding

  • main support frame legs being drilled

  • Main support frame welding

  • fitting car cabin support frame

  • trial assembly positioning, rear

  • trial assembly positioning, side

  • 600kg / wheel nylon wheel install

  • trial assembly positioning, side

  • trial assembly positioning, rear

  • main arm twist reversal tensioning

  • stiffening solution in progress

  • stiffening system nearly ready to go on

  • Safely getting 220kg stiffening structure on

  • Stiffening, left corner view

  • Stiffening, right corner view

  • Stiffening, right side view

  • turn cylinder, view from inside

  • turn cylinder, view from outside

  • bounce cylinder

  • Right side view with cylinders

  • Front view of engine bay

  • tilt cylinder

  • proof stiffening solution excellent

  • right side view @ going live

  • right rear side view @ going live

  • right rear corner view @ going live

  • right top rear corner view @ going live

  • rear view @ going live

  • left rear view @ going live

  • left rear corner view @ going live

  • left back view @ going live

  • left front corner view @ going live

  • front view @ going live

  • Moki front cleaned up; she's nearly ready to go...

  • Moki front cleaned up; she's keen to go, but not quite there yet...

  • Oops, need to trim roof!

  • Tilt whoopsie rectification

“Opportunity is missed by most people because it is dressed in overalls and looks like work.” – Thomas A. Edison

Hydraulic System Components
Click to go to: Construction ; Hydraulics ; Electricals ; Operational ; Old_Videos

  • Second hand 10HP hydraulic power pack from SA

  • motor bearings rusted out plus fan broken

  • after tender love & care in the shed at Vince's

  • Hydraulic gear pump checking

  • Servo valve plugs being made up

  • Directional valve spool change

  • Anti-drop safety valve, tilt cyl

  • Valve manifold assy + turn cyl safety valve

  • Incoming Supply Hoses from Powerpack

  • Most hydraulics installed, ready to test operation

  • Hydraulic tank nearly ready

  • Hydraulic tank c/w flow meters, and green blood!

  • First proper oil leak, as opposed to spills by clutzy inventor!

  • Hydraulic Powerpack Relocation

  • Hydraulic Powerpack banished for being too noisy

  • Hydraulic Accumulator Fitted

“To invent, you need a good imagination and a pile of junk.” – Thomas A. Edison

Electrical System Components
Click to go to: Construction ; Hydraulics ; Electricals ; Operational ; Old_Videos

  • Turn cyl position detector, upper

  • Tilt cyl position detector

  • Turn cyl position detector, lower

  • Control box remote mounted (meters on slow boat from China!)

  • 12V & 24V fused & relay protected control supply

  • It's messy building electrics for these things!

  • Control box local mounted position

  • Control box internals - can you spot the zener diodes?

  • VR Equipment - Vive

  • Controller PC - 01

  • Controller PC - 02

  • Controller PC - 03

  • Controller PC - 04

  • VR Equipment - Oculus

  • PC & VR Accessories

  • The brains - Arduino Mega + Network card

  • Main controller peripherals

  • Left Bounce Cyl Position Sensor – 1

  • Left Bounce Cyl Position Sensor - 2

  • Right Bounce Cyl Position Sensor - 1

  • Right Bounce Cyl Position Sensor - 2

“The true sign of intelligence is not knowledge but imagination.” – Albert Einstein

Operational Phase
Click to go to: Construction ; Hydraulics ; Electricals ; Operational ; Old_Videos

  • Kellie meets Moki

  • The girls seem to be getting on famously

  • Simulated Simulator Experience

  • Are we there yet?

  • The Vive VR headset goes on

  • simulated simulation going well.

  • Looking good Kellie, how's the hair?

  • Forward Tilt Plenty Of Range - Front View

  • Forward tilt plenty of range - rear view

  • Range Testing 01

  • Range testing 02

  • Range testing 03

  • Range testing 04

  • Range testing 05

  • King Jack's Beautiful Rock-n-Roll Swoonmobile

  • King Jack, 120kg Tilt Test Dummy (apologies to Andy Kim's lyrics!)

  • Range Testing 06 - Whoops!

  • Range Testing 06 - Problem, What Problem!

  • Jack Gets Legless After A Few 1 Second Tilts!

  • Let Loose at Spotlight, not sure where its all going...

“A positive attitude causes a chain reaction of positive thoughts, events and outcomes. It is a catalyst and it sparks extraordinary results.” – Wade Boggs

Videos(Scroll to top of page for most recent)
Click to go to: Construction ; Hydraulics ; Electricals ; Operational ; Old_Videos


15/05/17 (2 min) Demo run now main hydraulic issues sorted. Accumulator not yet fitted and it will be even faster and smoother when that happens. But need to do detailed trials to determine best system pressure first, then can charge accumulator to suit and fit it.


19/03/17 (15sec) She Moves, She Moves!!! But not much due to wrong part supplied…

“Any man who can drive safely while kissing a pretty girl is simply not giving the kiss the attention it deserves.” – Albert Einstein