Motorised 9392 Quadbike

I had a sudden urge last night to make a fast RC vehicle with suspension. So I decided to motorise the 9392 Quadbike set.


It is driven by an XL motor geared up 1.66667:1. This results in a reasonable amount of torque for it's size, and it is very quick.





The steering is done via a worm gear and 24 tooth gear assembly, placed above the suspension struts. It is a reliable solution and fits rather well, except for the M Motor poking out of the front.







I have retained all the original features (working handlebars, suspension and 1 cylinder fake engine).
I changed all the soft springs for hard springs to handle the extra weight of the Power Functions components.
I am happy with the result, even though it is very ugly, it is incredibly fun to play with.

Motorised 8435 Video

Here is my video:



I hope you like it!

Motorised 8435

I recently purchased the 8435 set and my first thought after I had built it was that it had to be motorised. So, after much trial and error, I have succeeded in motorising the model.



It uses an XL Motor for drive (geared down 1:2) and a M Motor for steering. It is fully remote control thanks to the IR Receiver and the IR Controller. The body is still easily removable (however you need to disconnect and remove the battery box first...) and the overall appearance is pretty much the same. I got rid of the differential (as they worsen the off-road performance), the V6 engine (which I wanted to keep, however it was the only sensible place for the drive motor) and a couple of other axles and gears here and there to make everything fit. I also reinforced the rear suspension with hard springs.








EDIT: I decided to add my big bad black wheels to it...



Suspension travel is worse, however it looks a lot lot better and it still steers fine.