How to build a 4 wheel bike

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1. Does anyone know what the pedal part is? Its a way longer than an original bike pedal bar, does anyone know what its called?
2. Does it have rear differential? I suggest making one for it because it will definitely make your 4 wheeled bike thing ride smoother, but not just that,
   You can power both rear wheels with only one chain and it will enable it to go to faster speeds
3. you should have drum brakes and brake leavers on your handle bars.
4. Add some speakers when u ride it
   
5. Quadracycle
6. Wow nice job!!!!!!!!!!😀
7. never ever use a vehicle that don't have a good brake
8. THAT KID DINT BUILD IT.
9. Who is the lenght and the widtb of this?
10. Coroplast ( think plastic cardboard) body on this to replicate a 1920's era car would make it even more awesome!
11. It's not a bike... It has 4 wheels 
12. That's pretty stinking good dude
13. Wow thats pretty cool!
14. Imagine adding a very lightweight bodywork to it of a replica of a car, and driving it. Amazing. Cool work.
15. How did you make this?