Shopping trolley bicycle adaptation

thingiverse

UPDATE 27.11.2019 I Simplified Joints By Using Ball Joint System, Which Turns Out To Be Much Better Solution From Previous One. It Provides Smooth Movement On All Axes. In Previous Version, Third Wheel Was Linked To Bike And It Was Steered By Bike Movement. New Version Has Offset Wheel That Turns Freely, Enabling Me To Attach Trolley From Various Positions. Attaching And Detaching Trolley Becomes Much Easier Now. New Solution Offers Better Weight Distribution Especially In Area Of Third Wheel. https://www.youtube.com/watch?v=orYER1IfJoQ We Use Regular Shopping Trolleys Every Day For Shopping, But They Can Be Heavy On Pulling Hand When Fully Loaded. I Thought Why Nobody Added Third Wheel So We Could Pull Them Easily Without Carrying Half Of Their Weight. [Here Is A Short Test Video Of The Trolley](https://www.facebook.com/akolov/videos/10159562545513868/). This Is An Adaptation That Adds Third Wheel, Which Also Plays Role As Steering Wheel And Enables You To Link Trolley To Your Bicycle By Fastening It With Rear Wheel Skewer. I Removed Textile Bag That Comes With Trolley And Replaced It With Plastic Box, Which Seemed More Convenient Now That Trolley Is Placed In Horizontal Position. The Box Is Fastened To Trolley Chassis With Zip Ties That Hold It Really Well. So This Is Version 0.1 Tested With Moderate Load, And It Works Just Fine. To Use Make Your Own Conversion, You Will Need Following Parts: - One 65mm Skateboard Wheel - Two 400-500mm Rods With 16mm Outside Diameter - Six M4x15 Screws/Bolts - One M8x80 Screw/Bolt - Two M10x70 Screws/Bolts For Printing, You Will Need: - Two Axle Joints - Two Axle Links - Two Spacers For Skateboard Wheel - Everything Else Is 1x Axle Links Are Connected With Axle Joints By Using M4 Bolts. Carbon Rods Are Inserted Into Axle Joints And Glued Or Bolted With M3 Bolts. Kolicka1.stl And Kolicka2.stl Are Used To Fix Rods And Add Main Joint Connector. Link.stl Is The Main Joint That Enables Trolley To Go Left And Right, And Also Move Up And Down If Needed On Bumps Or Curbs. At Same Time Skateboard Wheel Is Inserted To Bottom Area And Fastened With M8 Screw And Bolt. M10 Bolts Are Used To Join Trolley Clamp And Part That Is Used To Fix Rods. Test-prikluchok-horizontalen1.stl And Test-prikluchok-horizontalen2.stl Are Used To Clamp Trolley Handle And Fix Trolley To Link.stl Adding Third Wheel To Trolley. That's All You Need To Assemble Adapter. I Used Inner Tire In Order To Prevent Slippage On Carbon Rods And Trolley Clamp.