MMOs – OSW Open Sim Wheel Project

HAPPY NEW YEAR 2015 Everyone 🙂

*******************************************

MMOs OSW Opensimwheel Project

leaderboard-transparent

This won’t be a review or a tutorial of the project, It is only a photo log of my project from start to finished. (with a little bit of explanation)

Firstly, I would like to thank Phillip Jansen Van rensburg (a.k.a Beano) for the tutorial guide from the iRacing forum (Link to the tutorial is here) which can be followed just as I did to complete this project.

I also would like to thank:

MMOs form virtualracing.org forum for the software + Firmware and his dedication of R&D to make this project a possibility

Berhard Berger from the Opensimwheel.net

Martin Ascher for the mount and written tutorial guide link here ( and his driving videos 🙂 – Check out his website if you haven’t already at http://www.ascher-racing.com/opensimwheel/

Everyone in this project who makes this dream a reality by your contribution be it suggestions or opinion, I thank you very very much.

Additional pre-project reading material and source to download the file (Software side of things) can be found in MMOs thread in Virtualracing forum here (You’ll need a google chrome or translate for non german speaking reader) The main important thing before I start this project is to understand the wiring diagram that Beano post on the thread, after studying it carefully and understand it, I started my adventure. First of, this is the Build of Material that I use (the 4 last entry on the spreadsheets are from Jaycar electronics)

PART AND LINKS QTY
LARGER 20-30nM 130ST-M15015
130ST-M15015 http://www.aliexpress.com/item/hot-sell-2-3kw-synchronous-motor/1097322214.html 1
Cables and connectors Contact Lisa Zhan via email 1
Power Supply ARGON SNT RS 25 24 http://www.reichelt.de/index.html?ARTICLE=137087 1
STM32F4DISCOVERY http://www.digikey.com/product-search/en?KeyWords=497-11455-ND%20&WT.z_header=search_goItem%202 1
ARGON SERVO DRIVE Consists of 1
Digital Servo Drive Argon http://shop.granitedevices.com/product/30/digital-servo-drive-argon 1
HAlf brick Heat Sink (argon & VSD-E) – Link 4
ARgon Resistor 250W 82 Ohm – Link 1
Simple Motion V2 USB Adapter http://shop.granitedevices.com/product/32/simplemotion-v2-usb-adapter 1
COUPON CODE FOR ARGON: V2dDG429, V8jf432d, V7jf432d
Alu Enclosure-Link 1
Drivelock bush http://www.beltingonline.com/drivelock-13-22×47-dl13-9694 1
adapter board for Discovery Dennis Reiner info Available after 17/12/2014 1
HUB from BEano 1
Servo Mount from Martin Ascher http://www.ascher-racing.com/shop/mige-mounting-bracket/ 1
10amp Incoming AC (230vAC) line filter – Link 1
dual pole Emergency Push button (for 3 Phase Estop) http://www.ebay.com.au/itm/161402846989?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649 1
120mm 12v DC Silent Fan from Jaycar 1
Power Converter from 24vac – 12v DC Jaycar 1
Jumper cable, fuse, fuse holder, cat 6s, switch, fasteners, terminal block, rainbow 15 ribbon cable,db15 head, 26pin ribbon , Ferrites choke, 3 core cable 1
Single pole Emergency Switch(for enabler) , neutrik usb, jumper lead, power switch. 1

Start of picture below. these are the first stage when parts start arriving. it doesn’t take very long for it to arrive Mainly 1-2 weeks ( it was the Christmas period after all) Picture of Mige servo arrival (bottom box servo, top box cables) the servo weighs at 13.5Kg

This slideshow requires JavaScript.

The hub mount that can be coupled with the Split bushing arrived, thank you Beano (picture shows with 2 layer of RMK adapter mounted)

The Rest of the material arrived ( Box, controller, Discovery, PSU filter,etc )

This slideshow requires JavaScript.

Material Preparation , (Wiring diagram – Check, wires- Check, tools -check)

Messy colourful wires is a necessity 😛

This slideshow requires JavaScript.

Back and side view one last time before closing 

This slideshow requires JavaScript.

Wiring completed

This slideshow requires JavaScript.

Completed

This slideshow requires JavaScript.

It’s ALIVE

Calibration Stage

This slideshow requires JavaScript.

Martin’s Mount Arrived 

 

Mounted

This slideshow requires JavaScript.

Testing time
2015 is a great year for sim racers, going from normal wheel to direct drive is like going from CRT to a triple screen racing, not going to give review but After  2 weeks racing and driving with MMOs wheel full time, I am very very amazed.

This is the impression I gave to those who asks:

Star Mazda at Road Atlanta

” it’s sooo stiff and violent all the road surface and bumps are so rapid and you will feel so connected to the road like ever before”

larger NM number means weaker FFB – so that video was at 48Nm It is now 28Nm, When I click 1 more up it becomes 45Nm, meaning it’s about 60.1% of the full force iracing supply, still not 1:1 yet it is now 1:1 (100%) (until I crank it up to 28Nm) however even at 45Nm in iracing slider, during the double right hand apex hairpin, when I accidentally clip a curb too high, my elbow felt like it was about to buckle, i think to drive this at a right force, you need a correct seating position to ensure it is safe, real race car position where the steering wheel is close to your chest and high, so you utilise your back muscle to turn that wheel instead of using your hand muscle.”

another thing is with Direct Drive wheel, it is not like normal wheel where when you crank up the force you loose detail because of clipping, the more force you crank up the clearer and more powerfull the detail is. there is no clipping in F Meter, and most importantly you push that wheel to the limit = pushing the tyre to limit, when tyre start to loose traction you will feel the wheel got loosen and lighter so clearly and much earlier, you know it’s time to catch that slide baby!!
Real VS virtual (Virtual Ouch!)

 the force that I apply to the brake pedal can be felt soo clear and so precise with this wheel , the more pressure I put, the heavier the wheel is and turning is like lifting 10KG of weight , I understand now why race car driver use steering weight training”

Daytona in a Ford GT3

one thing that really surprises me I can feel road surface again- oh the joy, road surface feeling since the G27 is now back baby and it’s on steroids, it’s gives me instant road feel so fast so many times, again and again, I kept smiling lap after lap , there is subtle vibration with every bumps and grid of the road ( I was thinking this is a placebo at first) but after 2 hour, I I know Im not crazy, daytona road surface felt smoother on the bottom than on top, top is a bit rougher, with t500 the road surface can be felt too , but with this it’s like amplified and clarified so many times that I am so sure it’s a fact (a subtle vibration can be felt a lot more on top than on the bottom).

The elevation of car ‘s weight transfer during Bathurst corkscrew experience is such a wakeup call. With this wheel I can feel that a turn should be done this way not that way, the speed of turning and the angle of turning dictated so strongly that If I fight it I know I’ll crash or spin ), I am more patience with my throtle because I can feel a lot more with my steering wheel and Im waiting for it to tell me when it is ok to push and when it’s not, it is clear as night and day.

I can let the car and steering wheel and the weight of the car glide into position, do it’s job, rather than me muscling it or forcing the car to do turns that is unnatural The weight of the car and road surface can be felt so much faster and instant than what I have played with before.

In my first lap, because I wasn’t expecting such a jolt and culture shock, I was 5 -6 seconds off my normal time, on lap 5, Im 100th off my normal laptime. lap 8 I was doing a purple lap by half a second, by lap 10 I hit 1 second faster than my PB with t500.(im still very slow but this wheel has really woke me up to what a steering wheel should feel like) 

it really is something that needs to be felt to understand.”

Testing Gamestock Car Extreme Formula V12

100% Force Oulton Park in a Lotus 79

70% Force – Road Atlanta in Radical SR8

Sincerely,

Marcus Hwang

IMG_2942