New Style Vertical Motor Happijac Spy Photos
These new style Happijac vertical motor jacks were on Lance campers recently shipped to dealers. It appears they have the jack leg release lever. I would like to get a look at th...
Forum Discussion
No Acme screw jack will drop on its own (with a motor disconnect) that requires a ball screw. The newest hi load Happijacs are acme screw. An acme screw will have higher friction and therefore require more torque to turn, but a ball screw has to be kept very clean and lubricated or it will freeze solid. Tradeoffs....
