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  1. kaival

    Developing flat pattern from final sheet metal part

    That is covered in the advisory circular document AC43.13. I have looked on the web with no luck so far.
  2. kaival

    Electrical Connector Grounding / Bonding to aluminum panels.

    I am using my company design manuals at the moment. I do have some references at home which I can check although I think they will be for signal shielding.
  3. kaival

    Electrical Connector Grounding / Bonding to aluminum panels.

    You can bond directly to a panel using a bolt, nut, washer, and terminal  combination. If this is for current return purposes a #10-32 can handle 35 AMPs Max, 1/4-28 100A, 5/16-28 200A and 3/8-24 245A. The surface under the contact area must be cleaned to bare metal. The...
  4. kaival

    Electrical Connector Grounding / Bonding to aluminum panels.

    A typical requirement would be .0005 Ohm per interface. To achieve this a clean smooth contact patch is required or a series of close tolerance fasteners or rivets.  What is the application and on what type of structure?
  5. kaival

    v-belt drive design manual

    Try the homebuilt aircraft forums. Many homebuilders have had to design their own Prop Reduction Units, PRU's, enabling them to adapt automotive engines. There are several books out on PRU's, they don't go into too much technical detail but they do provide leads to suppliers.
  6. kaival

    Circuit Break

    For wire breaks on airplanes in production we use a Time Domain Reflectometer (TDR) made by HP. With the right equipment it will only take minutes to determine the distance from the wire end to the break. But we know where the wire routes and its total length. Finding a cable underground will be...
  7. kaival

    Accumulator Function in an Automatic Transmission

    I reciently had to open up a MOPAR 727 to replace the reverse band which had been damaged while backing a horse trailer up an incline with low fluid, (my wife did it but it was my fault). Upon removing the valve body I found the accumulator spring missing. Now at first I thought that it might...
  8. kaival

    Small Comercial/Industrial Moters

    I have always wondered why small induction motors have ratings up to 6/7 HP yet are still the same size as 2/3 HP motors except having an extra start capacitor(commonly seen on compressors). Industrial motors are twice as big for the same HP. Do they use the same rating system? Is torque a...
  9. kaival

    Trolly buses

    Good question. When I was young there were trolley buses that served our neighbor hood as well as electric street cars. My guess is that two major factors were involved; route flexibility and maintenance costs for the power grid. No wait a third factor, which would be cheap fuel. At the time...
  10. kaival

    Power Factor Correction

    We use "Electrolytic (nonsolid electrolyte) Tanatalum, (nonpolarized, etched foil), 85deg C (voltage derated to 125deg C) per Mil-C-39006/2. I have ordered our capacitor/vendor document and will post vendors when it arrives.

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