Basic wheel animation

Hallo, I’m trying to design my very first project with Unreal Engine the simulation of a small R/C skid steering vehicle. The vehicle is a 4 wheeled *car *NON Ackermanm.
For several reason I need to design my own wheel roll animation.

I tried trough Blender whitout luck (bones in animated meshes where rotated abnormaly and some elements disappeared).

I tought to use Animation Composite/Animation Sequence but I found many problems:

  1. How can I define a 1 sec animation sequence? The only way to create a sequence I found is to start recording and then stop but it’s impossibile to have a precise length in this way.
  2. I tried to define a sequence for each wheel each sequence should have 4 key frames and in each key frame I tried to apply a wheel rotation of 90° degree (around Y axis) also there I had a number of issues and when I preview the animation I see the wheel rotating not on the correct axis…

Best regards,
Michele