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Opinions of surface drives

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Old 10-08-2002, 09:49 PM
  #41
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When would adjust it under way? Under what conditions?
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Old 10-08-2002, 10:01 PM
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Kaama I probably saw the first one.

It had a hand pump from a porta power Jack! The trick was tracking the drives we used 6” stroke Italian control cables on the steering rams and a separate trim panel.
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Old 10-08-2002, 10:07 PM
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RonP......Dont know if that was a question back to me, so.

Its actually kinda simple. When you push in on one ram, the other has to go in the opposit direction. If there is no air in the lines or ram (just some ATF fluid..etc), its rock solid. The problem with mine would be that i'd have to fabricate a 5"+ riser on the drives to get a solid tie-bar to clear the tunnel.

So on mine, the steering rams are on the outer sides of the drives, and the tiebar rams are inner. The same exact rams.
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Old 10-08-2002, 10:10 PM
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It sounded like you would change the toe in and toe out using the tie bar. Why is it movable? For what reason?
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Old 10-08-2002, 10:34 PM
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Ron
It had to be “Touched up” Once in a while as there is tremendous pressure there and the Hydraulics leaked down a little, Also a trim change necessitated a Tie bar adjustment!

This was on the cats as a solid tie bar would have been in the tunnel on the early race boats !
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Old 10-08-2002, 10:39 PM
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Ron
The first ones with an Electric trim Pump We had to use solenoid valves so as the Tie bar pressure would not push back into the mercury or Kiekhaefer trim pumps so you see the forces involved here.
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