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Advice on Pre-Load springs needed

Discussion in 'DIY Motion Simulator Projects' started by ebinary, Aug 31, 2009.

  1. ebinary

    ebinary New Member

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    Has anyone experimented with adding springs to actuators? I'm not sure if it would help in the 2DOF/3DOF world, but in the 6DOF case - where all the weight is directly on the actuators - it seems like it could really make a huge difference.

    I figure if I can appropriately add a spring that adds about 75lbs of life to each actuator, I can offset the platform weight and an average rider's weight. That gives lots more headroom, plus its easier on the actuators.

    Has anyone done this before? I can't find any examples in my searching.

    Eric

    P.S. Check out the videos of my 6DOF's maiden voyage in the video area.
  2. Ads Master

    Ads Master

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  3. Mambo

    Mambo New Member

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    Re: Advice on Pre-Load springs

    Better solution is gas spring (its similalry like main leg in office chair), they are chep and strong. They have better force characteristic than normal spring ( http://www.gas-springs.net/images/locka ... spring.gif ). Also you can use pnemumatic cylinder with big air tank but it would be more expensive.
  4. ebinary

    ebinary New Member

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    Re: Advice on Pre-Load springs

    Great idea! They move fast right? How durable (every gas spring I've encountered on pop-top campers has worn out pretty quickly, but maybe because it is stored compressed)?

    Anyone know a good USA source?

    Thanks! Eric
  5. Mambo

    Mambo New Member

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    There are two types, industrial and for home use. For home use they have warant 50 000 strokes and max speed around 300-400 mm/s but they are realy cheap. Industrial are often use in CNC machines (also air cylinders) so they last longer.