What You Must Know Before You Start Your Billy Cart Designs

Are There Any Restrictions For Your Billy Cart Designs?

If you are building a Billy Cart for a particular race or derby, it is good to know what the construction requirements are for that event. Most of the events held around Billy Carts have some form of construction requirements for the classes that will race at that event.

It would be heartbreaking to build a cart only to not be able to race it because it is too long for instance. It would also be frustrating to enter a cart that is much slower than its competitors, because it is not built for the particular race.

The following points are a guide for Billy Cart designers and builders, which have been taken from a number of events. If you are designing and building a cart not for any particular event, it can be good to look through the list to make sure your cart has the appropriate safety considerations.

Billy Cart Races Flag

Knowing the construction requirements will help you reach the finish line safely



The first thing you want to know is the safety requirements. As safety is the main reason for many of the Billy Cart construction requirements.

  • Do competitors need to wear a helmet, if so what type?
  • Is there any special protective clothing that needs to be worn, any particular shoes/boots?

Safety is also a very important design factor in your cart.

  • Do brakes need to be on the cart, what type?
  • What steering is allowed on the cart, will a rope do or is something more serious required?



Billy Cart designs are also impacted by the construction requirements. Different parts of the cart will have different requirements, such as:

  • What can and can’t the Billy cart be made of? Are windshields allowed?


  • What is the maximum size, do they need to be hard wheels or can you use bike tyres?


  • Can the wheels be directly attached to the cart, or do they need a steel axle?
  • How wide can the wheels be?
  • How many wheels allowed?


  • How long, wide and high can the cart be?


  • How does the pilot sit on the cart, can they lie down or do they have to sit upright?


  • How many persons are required on the cart?


  • How heavy or light can the cart be, does that include or not include the driver?
  • Is any extra weight allowed?

Billy Cart Design Safety quoted text

Race Constraints

Knowing the race conditions and the track whilst making your Billy Cart designs can help you at race time not only get your cart on the track, but also help make it competitive.

The Start Of The Race

  • Is the cart let go from the top of a hill, or can the pilot push like a bobsled race?

The Race Track Itself

  • It’s good to know information like, how long is the race, does the track have any corners, and how steep is the hill if there is any.



The best way to know about what passes on race day is to ask the organiser for the construction requirements. Once you have and idea of what you can and can’t build, talk to others who are building a cart to canvas for design ideas.

Clues like ‘windscreens are allowed’ written on construction requirements can mean that many of your competitors will not be open, and have covers or shrouds over them. Talking to other builders can help unearth these intricacies.



I hope this helps your Billy cart planning efforts.

If you have anything to ad please contact us here.

Thanks for reading and good luck on the hills.


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