<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><DIV>In the summer the electric bill for the two DC-8 sims in Dayton would reach 12 thousand dollars a month. The hydraulic pumps consumed a huge amount of power because they run continueously. The electric motion base motor only runs when the motion base needs it to. The electric units also take up MUCH less room. </DIV>
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<DIV>>I suspect that it's because it's a lot cheaper in infrastructure requirements to use. >Maintaining a hexapod motion base that uses hydraulics is very expensive. Hell doing a >3DOF hydraulic base is spendy.<BR>><BR>>There's a guy on the net that's put together some insanely cool DIY actuators that aren't >that expensive to build. I don't have a link handy right now though.<BR><BR>>g.</DIV></td></tr></table><br>