INTRODUCTION

Unveiled in April 2021 by Danny Choo and the team at Culture Japan (shop.smartdoll.jp); designed by @Stella (Instagram), the Quantum Retrograde Bike is a modern engineering marvel. The bike is a bold open air pc chassis designed exclusively for ITX motherboards. Merging aesthetics, function, and fandom, this concept chassis transforms your PC build into a futuristic ride with full visibility and showpiece appeal.

Designed in Tokyo Japan

Even though the case is designed for a Mini-ITX motherboard, the bike's length is ~86.5cm (34 inches) in length x 21.5cm (8.5 inches) in width, which takes up a lot of desk space.

SPECIFICATIONS

• Approximately: 86.5 cm (34 in) length × 21.5 cm (8.5 in) width
• Weight: Approximately 4.5kg (10lbs)
• Mini-ITX motherboards only
• Can accommodate 2-slot height GPUs with a maximum length of 285 mm and width of 115 mm
• Low profile coolers like AMD’s Wraith Stealth, Intel’s Laminar RM1, Be Quiet’s Pure Rock LP, and Noctua’s L9a and L9i coolers are recommended.
• SFX Power Suppy

The bike is designed to made with 3mm or 1/8" acrylic. Or, if you're felling fancy you could use 3mm aluminum; just be aware of the additional weight, but I would love to see it. I also included 3MF files if you want to 3D print the bike frame.

If you are interested in the bike but not the PC aspect, you may be able to figure out how to modify it to house a motor(s) because the wheels do spin and the front wheel does tilt. The bike also has provisions for lighting (see photos for inspiration). Feel free to make your own modifications to really make it yours. I can't wait to see what everyone comes up with!

Tires are included if you attempt to print them. They have not been tested but should work. I recommend purchasing the tires, however. These are a good fit: https://www.ebay.com/itm/195611503839.

Specs of PC Parts Pictured

• ASUS ROG Strix B550-I Gaming Mini ITX AM4 Motherboard
• AMD Ryzen 5 5600T 3.5 GHz 6-Core Processor
• Crucial Ballistix Gaming RGB 32GB DDR4-3200 CL16 RAM
• Samsung 990 EVO Plus 4TB M.2-2280 NVME SSD
• Corsair SF750 -PLATINUM- 750W PSU
• Sapphire Radeon RX 7900 XT Reference Model

REQUIRED PARTS LIST

Here is a list of recommended hardware to assemble the Quantum Retrograde Bike.

• - INTRODUCTION

Unveiled in April 2021 by Danny Choo and the team at Culture Japan (shop.smartdoll.jp); designed by @Stella (Instagram), the Quantum Retrograde Bike is a modern engineering marvel. The bike is a bold open air pc chassis designed exclusively for ITX motherboards. Merging aesthetics, function, and fandom, this concept chassis transforms your PC build into a futuristic ride with full visibility and showpiece appeal.

Designed in Tokyo Japan

Even though the case is designed for a Mini-ITX motherboard, the bike's length is ~86.5cm (34 inches) in length x 21.5cm (8.5 inches) in width, which takes up a lot of desk space.

SPECIFICATIONS

• Approximately: 86.5 cm (34 in) length × 21.5 cm (8.5 in) width
• Weight: Approximately 4.5kg (10lbs)
• Mini-ITX motherboards only
• Can accommodate 2-slot height GPUs with a maximum length of 285 mm and width of 115 mm
• Low profile coolers like AMD’s Wraith Stealth, Intel’s Laminar RM1, Be Quiet’s Pure Rock LP, and Noctua’s L9a and L9i coolers are recommended.
• SFX Power Suppy

The bike is designed to made with 3mm or 1/8" acrylic. Or, if you're felling fancy you could use 3mm aluminum; just be aware of the additional weight, but I would love to see it. I also included 3MF files if you want to 3D print the bike frame.

If you are interested in the bike but not the PC aspect, you may be able to figure out how to modify it to house a motor(s) because the wheels do spin and the front wheel does tilt. The bike also has provisions for lighting (see photos for inspiration). Feel free to make your own modifications to really make it yours. I can't wait to see what everyone comes up with!

Tires are included if you attempt to print them. They have not been tested but should work. I recommend purchasing the tires, however. These are a good fit: https://www.ebay.com/itm/195611503839.

Specs of PC Parts Pictured

• ASUS ROG Strix B550-I Gaming Mini ITX AM4 Motherboard
• AMD Ryzen 5 5600T 3.5 GHz 6-Core Processor
• Crucial Ballistix Gaming RGB 32GB DDR4-3200 CL16 RAM
• Samsung 990 EVO Plus 4TB M.2-2280 NVME SSD
• Corsair SF750 -PLATINUM- 750W PSU
• Sapphire Radeon RX 7900 XT Reference Model

REQUIRED PARTS LIST

Here is a list of recommended hardware to assemble the Quantum Retrograde Bike.

• 12x M3 Hex Standoffs 6mm long x 5mm wide
• 24x M4 Hex Standoffs 20mm long x 7mm* wide
• 18x M4 Hex Standoffs 30mm long x 7mm* wide
• 15x M4 Hex Standoffs 60mm long x 7mm* wide
• 8x M3 Black Oxide Nylon Locknuts
• 4x M3 Button Head Screws 5mm long
• 8x M3 Button Head Screws 16mm long
• 4x M3 Pan Head Phillips Screw 4mm long
• 27x M4 7mm long Knurled Nuts
• 60x M4 Black Oxide Nylon Locknuts
• 2x M4 Button Head Screws 8mm long
• 58x M4 Button Head Screws 10mm long
• 52x M4 Button Head Screws 12mm long
• 2x M4 Button Head Screws 14mm long
• 4x M4 Button Head Screws 18mm long
• 2x M4 Button Head Screws 20mm long
• 12x M4 Button Head Screws 25mm long
• 4x M4 Flanged (or standard) Button Head Screws 8mm long
• 4x M4 Flanged (or standard) Button Head Screws 10mm long
• 6x M4 Hex Socket Flat Head Cap Screw 12mm long
• 16x M4 Hex Socket Flat Head Cap Screw 14mm long
• 4x M4 Hex Socket Flat Head Cap Screw 16mm long
• 26x M4 Countersunk Washers
• 6x M4 Socket Head Screws 12mm long
• 4x M4 Socket Head Screws 14mm long
• 58x M4 Socket Head Screws 16mm long
• 28x M4 Socket Head Screws 20mm long
• 3x M4 Socket Head Screws 30mm long
• 5x M4 Socket Head Screws 35mm long - Fully Threaded
• 4x M4 Socket Head Screws 40mm long
• 4x M4 Spacers 3mm long x 10mm wide
• 6x M4 Thin Hex Nuts
• 24x M4 Heat Set Inserts ~6mm long
• 16x M4 Heat Set Inserts ~8mm long
• 5x M8 Nylon Locknuts 13mm wide
• 4x M8 Socket Head Screws 35mm long
• 1x M8 Socket Head Screws 45mm long
• 4x M8 Spacers 6mm long x 16 mm wide
• 2x 8.5in x 2in Scooter Tires (Do not use solid tires)
• 1x 16mm Momentary Power Button
• 1x 300mm PCIe Riser Cable (motherboard mounted on the right frame of the bike)

*It's possible to use 8mm wide standoffs. 7mm is easier to work with when installing the M8 bolt for the front steering fork.

*It's possible to use 8mm wide standoffs. 7mm is easier to work with when installing the M8 bolt for the front steering fork.