Re: Hydraulic Ram
			 
			 
			
		
		
		
			
			The machine you referenced is called a 'Jackscrew mechanism'. You can use all-thread and nuts, or the nicer version uses Acme rod with Acme nuts.  
 
Also a forum sponsor Actuonix makes several plug and play linear actuators, that can be run as either a linear servo that self centers or an actuator that holds position.  It would be cheaper than hydro. They even have built in micro switches at travel limit.
		 
		
		
		
		
		
		
			
				__________________ 
				What do ya mean "Cars are neither Trucks or Construction"? 
It's still scale, and i play fairly well with others, most of the time...
			 
		
		
		
		
		
	
	 |