Automotive Differential Demonstration Model

thingiverse

This is a 3:1 automotive open differential demonstration model. This type of differential can be found on rear wheel drive cars and allows each wheel to turn independent of one another. I created this model as a technical challenge for myself with the intension of it being used as a a DIY kit given to children to build and use as an educational demonstration model. The gears and shafts were separated to help reduce print times. I opted to use 3mm wooden dowel to pin them together. I have included a 1:1 floor plan to help position the supports but this is to be used as a guide only. I have also listed the wheels as optional as I ended up using two salvaged hoverboard tyres and built the rims around these dimensions but any type of wheel can be attached. Print List Item NO Description Qty 1 Support 90mm x 20mm 5 2 Support 90mm x 30mm 1 3 G60 Straight Bevel Gear 1 4 G60 Rear 1 5 G60 Support 2 6 G20 Straight Bevel Inner Pinion Gear 4 7 G20 Inner Rear 01 2 8 G20 Inner Rear 02 2 9 G20 Straight Bevel Outer Pinion Gear 1 10 G20 Outer Rear 1 Optional 11 Wheel Hub 2 12 Rim Front 2 13 Rim Rear 2 14 Tyre 2 Additional Materials 15 3mm x 15mm Dowel 30 16 6mm Dowel Various Lengths 17 Suitable Wood Screws 12 18 Printed Floor Plan 1 19 M4 x 45mm Bolt (If you are printing wheels) 8