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  1. 007Driver

    Big Gate

    The FAAC 400 model looks like the winner http://www.gatedepot.com/prod_faac/detail/400.htm Comes with a warrante that we cant offer the customer if we built it and it handles a gate thats 3 times as long as ours. Also has a nice "soft" start and stop which is nice. And the price looks pretty...
  2. 007Driver

    Big Gate

    I spend the first full day trying to track down a "buy and install" opener, there are no units available for this weight of gate and looks how the customer wants it. If anyone sees an opener thats FULLY hidden and can handle 2000 lbs, I would be very happy.
  3. 007Driver

    Big Gate

    Hello all, I just graduated from mechanical engineering and Im feeling silly about having difficultly with my first design task as a newly employed EIT. This is what I have been working on: A set of driveway gates for this really nice mansion, these gates are going to be big and heavy and...
  4. 007Driver

    Small Hydraulic Pump and Motor

    Sorry about the confusion. What I am trying to achive is basicly a small drivetrain. The pump will be powered by myself via a crank. I am going to control the speed of the motor for the output by a set of valves and a proportioning system. I would like to select settings for either high speed...
  5. 007Driver

    using a 90 degree crank on a four cylinder engine

    Hello, I do not this that type of crank you describe is a dynamicly balanced crank. I have done work on drum style brush cutters and balancing was a big problem. Its easy to build a STATICLY balance crank shaft, but when it turns it could shake like mad. Thats why you see cranks in funny...
  6. 007Driver

    Friction coefficient of oak on steel

    Hello, Maybe Im out in left field here, but I thought to measure Kinetic COF you tilt the base plate so the object sliding down the hill does not accelerate. If the item comes to a stop, you will have to know the speed of the item before you tilted the base and that would get tricky to calculate.
  7. 007Driver

    Small Hydraulic Pump and Motor

    Whups, my bad.. The Motor will run from 60RPM to 300RPM as well.
  8. 007Driver

    Small Hydraulic Pump and Motor

    Hello, I am looking for a small hydralic pump and motor. The pump drives the motor by some direct oil lines between the two. The pump must around 3" in diameter and 3" long (a cylider, and the smaller the better). The motor may be 4" or 5" in diameter but only 2" long (a cylider as well, again...

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