Hi,
long time no see.

Want to build a campervan or a trailer and have to make a lifting bed and probably lifting roof. Both using 4 cheap 12 or 24v linear actuators 1000mm travel at around 100euro each
I have seen in YouTube the bed build using 4 actuators, but i want to do sth more complicated like hard folding roof trailer, and i dont have it clear what happens if one motor is not working and the other 3 continue to push? I would like somehow to avoid that???

Basically i would like to do something like that and insure against failing actuator somehow but still using cheap actuator . Any ideas?