I got a 4 post bradbury, with free wheel (single phase) from a local garage closing down... cost me £500. A new set of cables cost me 80 quid (although it didn't need them). It is inspected annually as a part of my insurance.
They are about for the same sort of money as you could make one.
You need to be a little careful swapping the motors from single to three phase to ensure they are the same oil flow rates.... I know someone who did it wrong and their ramp went up and down like the clappers ! (It lost all it's power though)
If all else fails... have you thought about a pit instead ? Much easier to design
They are about for the same sort of money as you could make one.
You need to be a little careful swapping the motors from single to three phase to ensure they are the same oil flow rates.... I know someone who did it wrong and their ramp went up and down like the clappers ! (It lost all it's power though)
If all else fails... have you thought about a pit instead ? Much easier to design