Hello, have been printing parts for a month now, start assembly today. Wanted to say thanks to Daniel and all the people adding information to this project. I will start sharing my experiences also and hope i can contribute a little.
I’am really a beginner, i know nothing about RC cars, nor cars in general and i see myself as not very skillful in general. But i love 3d printing (just started in february) and loved this OpenRC project. Wanted to build this RC car for my 6 year old son. And if i can do this, then everybody can. And so far, so good, the bottom plates fitted 
Just took me a long time to figure out all the necessary (extra parts) and what sizes they needed to be (m3, rods, tires etc). My first contribution, a kind of Bill of material i made so far (copying things from everybody on this page:
Bill of Material (BOM) OpenRC:
Differential
2 M3x8mm
2 M3x16mm
One 16mm rod
still haven’t found the diameter of the rod, i think 3 mm, equal to M3
Tires
The rims +Daniel Norée created are 50mm width and 72mm diameter. Is this a standard size?
the outer diameter of that tire i mentioned above is about 115mm.
Rods Wishbone
For the inner one i have used 3,0 or 3,2mm stainless steel rods and the outer 2,0mm stainless steel rod…
Axle
Reely Spare part CVD-cardan shaft (V23581)
Bearings/lagers:
You need the following bearings: (measurements are: Inner Diameter x Outer Diameter x Thickness)
LRP Ballbearings 10x15x4mm (10 Pieces) - S10
Protek R/C 10x15x4mm Rubber Sealed “Speed” Wheel Bearings (10) = is size 6700
LRP Ballbearings 5x10x4mm (8 Pieces.) - S10
Protek R/C 5x10x4mm Rubber Sealed “Speed” 1/8 Clutch Bearings (10) = is size MR105
For the wheels (2 on each) you need 5x10x4 bearings (8pcs)
For the front, rear and central diffs (2 on each) you need 10x15x4 (6pcs)
Also, (not yet uploaded) there is an updated Steering using bearings which are 6x12x4 (4pcs)
Someone found normal non sealed ballbearings for 1 Euro per piece on ebay or sealed 2RS for 2,50 Euro per piece.
Transmitter/Afstandsbediening;
Transmitter / Receiver: Hobby King GT-2 2.4Ghz 2Ch Tx & Rx
Rx / Tx (AKA Reciever / Transmitter or Radio Gear)
Get 2.4Ghz. Long range and no interference.
Sanwa (#MT4-2.4G) MT-4 2.4GHz w/RX-461/102Zx2
Transmitter / Receiver: Hobby King GT-2 2.4Ghz 2Ch Tx & Rx - $ 14.99
Receiver/Ontvanger:
ESC should be over-rate rated: 100A
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=8993
Daniel uses: Turnigy Trackstar 1/10 45A Sensorless Car Esc
your ESC is sensorless, you need to used a sensorless motor unless the esc supports both, even then it’s better to be matched
ESC: Turnigy Brushless ESC 35A CAR ESC
SKU: TR35A-V2 - $ 24.99
An ESC programming card is optional and not needed/recommended for beginners
Turnigy Speed Controller Programming Card
You can use it fine without the program card but Its only $6 and does make things easier to setup: http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=9550
Turnigy Speed Controller Programming Card - $ 6.13
Make sure your ESC has a lipo cut-off and make sure its set. 3.4V per cell is a good safe number. If you don’t have a cut-off you can use a lipo alarm, they’re really cheap on ebay and hobbyking sell some
Yeah Racing (#YA-0185) Lipo Battery Safe Guard Charging Bag (215mm x 180mm)
Motor:
According to Daniel, if you use a strong motor this can/will damage your printed differential and gears
so i think i will start of with a less powerful motor
Motors below are the ones recommended:
Turnigy TrackStar 9.5T Sensored Brushless Motor 4120KV
I would say get 13.5T or 17.5T Brushless, 13,5T is entry level
Hobbywing (#Combo-A1) EZrun Brushless Sensorless 18A-SL-H (Version 2.0) +12T Motor (KV 7800)+Programcard Combo Set
S2848-4370 Brushless Inrunner (4370kv) - $ 22.26
ACCU:
Use NiMh if you are not familiar with batteries, seem to be less dangerous
Turnigy 5000mAh 2S2P 40C hardcase pack (ROAR APPROVED)
Someone uses Liopos between 4000-6000Mah
Discharge rate is in ‘C’. Multiply the C by the capacity to calculate the current you can draw (e.g 5000mah x 30C = 150A). The S number is number of cells (voltage), 2S is fine for beginners.
Accu holder
Oplader:
HobbyKing B3AC Compact Charger
rcMart SUPER COMBO XTRA SPEED Microprocessor 6A-50W Balance charger w/ Yeah Racing 7.4V 3200mAh 20C Lipo Battery #CB0594
Servo:
Make sure it’s water resistant
BMS-621MG High Speed Servo (Metal Gear) 6.4kg / .13sec / 47g, deze is langszaam volgens Daniel
Shock absorbers:
100mm for the latest version!
M3/Schroeven:
- Countersunk Head:
42x M3x8
8x M3x12 - Pan Head Cap:
14x M3x8
4x M3x10
6x M3x12
8x M3x16
There is also a need of 22 M3 nuts.
Overzicht including axes:
I am using the Differential housing and gear set from a LOSI TEN - T.
LOSA6956 Bearings X4
LOSA6954 Bearings X 4
LOSB3542 Differential Housing X 2
LOSB3569 Differential Gear Set with Hardware: X 2
LOSB7213 Tires X 4
YOKBM-010RB Yokomo Rear Dog Bone X 4
Team Durango Rear Wheel Axle X 4 these axles work for the wheels that Barspin has posted to Thingiverse
I got these from http://www.amainhobbies.com
I got the shocks from amazon.http://www.amazon.com/gp/product/B00504SJRC/ref=oh_details_o06_s00_i00
Another electronic list
I already have the Hobby King GT-2 2.4Ghz transmitter.
Turnigy TrackStar Waterproof 1/10 Brushless Power System 4000KV/80A
$ 50,27
Turnigy Accucel-6 50W 6A Balancer/Charger
Radio Control Planes, Drones, Cars, FPV, Quadcopters and more - Hobbyking $ 22,99
Turnigy 4000mAh 2S 40C Lipo Pack
Radio Control Planes, Drones, Cars, FPV, Quadcopters and more - Hobbyking
$ 18,24
Lithium Polymer Charge Pack 18x22cm Sack
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=4134 $ 1,99
HXT 10kg Servo (metal gear) 55g / 10kg / .16sec
Radio Control Planes, Drones, Cars, FPV, Quadcopters and more - Hobbyking
$ 7,97
Total: $ 101,46
For the 3D printer
3M Scotch Blue painters tape for multi surfaces # 2090
I found a lot of differences inPLA colour and curling of the edges
Gold and silver did a lot of curling, especially with big surfaces.
Orange much less.
