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  1. tambraton

    Worm Gearbox efficiencies for hoists during raising/lowering

    Hello I'm trying to determine if there is any difference in efficiences for a worm gear box used in a hoist system. Details are as follows: A hoist is used to lift a gate. The hoist drive train is composed of a 25hp motor, primary reducer (worm gearbox with 1/60 gear ratio) and two...
  2. tambraton

    3d Coordinates of a point

    Good Day to you sir! Newbie inventor user here. Would anyone know how to assign a 3d coordinate in space, and have it linked directly to a excel spreadsheet - so updates/changes to the excel can be reflected in the points? (key idea is linked to the excel sheet) The situation is like this: -I...
  3. tambraton

    Large diameter penstock branch design

    Canadieng Thanks so much for your comments and list of documents, much appreciated. I've managed track many of them down and have some of in house. I also found the following thread that had some suggestions (many of the same)...
  4. tambraton

    Large diameter penstock branch design

    Hello I'm looking into the design of large diameter branch (59")off a 120" penstock with an internal pressure of 50psi. I'm having trouble finding a suitable guide for calculating the stresses at the branch/penstock interface. We are planning to use do some FEA but I would like something to...
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