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  1. RUFUS2K

    Who makes rigid composite sheets?

    A few years ago I got a sample pack of really cool composite strips. I think that there were four strips in the pack and they were about 1" x 4" x .05" thick. The cool thing about them was that each strip had the filaments laid in a specific direction so that each one had completely different...
  2. RUFUS2K

    Calculating required cooling capacity

    Does anyone have a method (spreadsheet, software package, manual calculation template, etc) for calculating the necessary size of an automotive airconditioning system? I need to take into account the solar load through the windows and body, occupant heat, etc. I am working on a supplimental...
  3. RUFUS2K

    Shear shaft on IO-550

    A couple of years ago I worked on a design of a small (approx .5" dia) splined shaft that had a reduced diameter section that was intended to shear in the event that the driven load increased to some unacceptable level. Through some calculation and some experimentation, I arrived on the correct...
  4. RUFUS2K

    Shaft fracturing

    A couple of years ago I worked on a design of a small (approx .5" dia) splined shaft that had a reduced diameter section that was intended to shear in the event that the driven load increased to some unacceptable level. Through some calculation and some experimentation, I arrived on the correct...
  5. RUFUS2K

    Calculating Lbs of water/hr from known latent cooling

    I have lab testing data that shows that an evaporator is doing 11900 BTUH of latent cooling. How do I convert that value into an amount of water produced by the coil. I need to size a drain for the evaporator assembly. Thanks!
  6. RUFUS2K

    AutoManager Workflow Upgrade?

    I am working for a company that is using CYCO Automanager WorkFlow 6.0. They have been happy with it but the problem is that we are looking to upgrade to AutoCad 2004 which is not supported by WorkFlow. CYCO recommends upgrading to AutoManager Meridian, but I was previously at a company that...
  7. RUFUS2K

    Spline consultant or consulting firm

    Does anyone know of a consulting firm that specializes in splines and drivelines incorporating splines? I have designed an air conditioning system that is driven by an accessory drive pad on an aircraft engine. All of the components have been built and assembled but when I connect everything to...
  8. RUFUS2K

    Diameter of splined shaft

    I am designing a splined shaft that will be driven by an accessory drive pad on an aircraft engine. The drive pad has a 12 tooth internal spline (SAE AS 972B). According to that SAE spec, the driven shaft should have an O.D. of 18.49-18.54 mm. I am having a hard time finding a readily available...
  9. RUFUS2K

    Overtorque protection

    I am designing an engine driven system of belts and pulleys. The engine manufacturer has specified that the maximum torque that can be imposed on the engine by the system is 100 in-lb. After consulting with my coworkers, the overtorque protection method that I am leaning toward is to machine a...
  10. RUFUS2K

    Tank recirculation question

    This is probably a very simple problem which I have made difficult by mulling it over in my head too many times. Here is the situation: I have a 5000 gallon "silo" type storage tank which contains 12lb/gal calcium chloride solution. It is necessary, from time to time, to recirculate...

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