Trying to make vehicles but how to make axles for models that don't have them?

Been following tutorials of how to make a vehicle, Been trying.

But how to i make certain stuff like axles on vehicles.

Lets say i make a simple cube car and i want to add wheels on it.

How do i make axles on models that don't have axle models in them?

 

you'll need a "wheel" slot and a "wheeldata" slot in the jbeam file of the part that you're mounting them to (usually the suspension).
i've got the bastion's rear suspension here as an example.
note that the "nodeoffset" part determines the position of the wheel on the vehicle.

then you'll also need to make sure you have a copy of the wheeldata jbeam part (it's usually further down in the same file).

 

Now what about pressurewheels and how to make then steer.

 

for wheels, you should just be able to use the common ones once you have the aforementioned wheel slot.
steering is more complicated, you'll need to basically model a set of front hubs and a steering rack out of nodes and beams, and use "hydros" beams to apply the steering force.

I suggest you poke around with the vanilla cars, by looking at the jbeam debugs in game with ctrl+B and ctrl+N, and reading through the jbeam files.

 

So, Rear wheels are easy, but Front wheels are hard?