Self made four wheel bicycles

CHASSIS

Base of this self made four wheel bicycles is made of two longitudinal 135 cm long 30x40x2 mm Aluminium square tubes (A). At the back side, they are screwed on two transversal 77 cm long 20x30x2 mm Aluminium square tubes (B,C), on the front on another transversal 51 cm long 30x40x2 mm Aluminium square tube (D). Distance between longitudinal tubes (A) is 52 cm at the back (C) and 39 cm in front (D) - that conical shape gives enought space for the seat inside the back side of the pedalcar and space to turn wheels left and right, outside the front part of it.

Click image to enlarge - free plans of home made bike car

At the back, there are four longitudinal 57 cm long 25x25x3 mm Steel L profiles to hold the rear wheels (E,F,G,H).

On the base we put vertically four 20 cm long 35x35x3 mm Aluminium L profiles(I). Upper transversal front holder (J) is made of 51 cm long 30x40x2 mm Aluminium square tube - because of high burdening. Upper longitudinal profiles are two 135 cm long 20x30x2 mm Aluminium square tubes. (K), at the back connected with transversal 52 cm long 20x20x2 mm Aluminium square tube(L).

Click image to enlarge - Free plans of do it yourself pedal car

At the front, back and on both sides, there are 2 mm aluminium plates (PL), screwed on chassis with M4 screws (bigger holes weaken the profiles vertical hardiness) to give construction additional hardiness.

Back side of self made four wheel bicycle

Click image to enlarge - plans of self made four wheel bicycle

Between transversal and longitudinal profiles we put trgles made of 1.5 mm Aluminium to prevent moving junctions around the screw.

Click image to enlarge - Free plans of our pedalcar

Ground plan of self made four wheel bike

Click image to enlarge - plans of self made four wheel bike

This sites are just information about what we did. The vehicle is not done by any safety standards and can be life dangerous when producing or using it. You are free to use our design and ideas in part or in whole, but you do it absolutely on your own risk and responsibility!
If using it commercial, you must cite the source: "Designed by www.spiller.si":

INTRODUCTION
DIMENSIONS
CHASSIS FRONT WHEELS
REAR WHEELS
STEERING
STEERING WHEEL
PEDALS
FRONT GEAR
REAR GEAR
SEAT
BREAKS
LINK
OTHER LANGUAGES