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  • Users: hydromech
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  1. hydromech

    Power Density

    Hi all... Please excuse the apparent noobiness of the question. I would like to know if there is a guideline for power density per kg/hr of air flow. Alternatively, is it better to base power density on air velocity? For a given flow of air, let's say 2500 kg/hr, what power density should be...
  2. hydromech

    Gravity Sand Cast - Investment Casting LM25TF

    Hello All, Can anyone give me the benefit of their experience with casting LM25TF? Is there any difference between the material properties that is caused by the different cooling rates between gravity sand casting and investment casting? There is subsequent heat treatment after each process...
  3. hydromech

    Assembly Geom Tols

    Hello All... In our our office we have collective experience of Pro Engineer that is in excess 100 years us use. But nobody knows the best solution to this "problem" and PTC are no help at all. The issue is regarding the best way to attached a geometric tolerance to a part in an assembly...
  4. hydromech

    Units in Mathcad

    Hello all... I am familiar with gear calculations...but not with Mathcad. I have a gear PCD and I want divide it by the module to get the number of teeth on the gear. The PCD is in mm and so Mathcad quite rightly assumes the resultant figure from PCD/2 would be in mm. I want it to have no...
  5. hydromech

    Beam Deflection

    Can anyone help with a the equation for calculating simple beam deflection. I have a beam with a point load and a UDL, when I calculate the deflection using the moments to left of x I get a different answer than when I consider the whole beam with the point load. I differentiate both equations...
  6. hydromech

    Pro Welding

    Hey... Can anybody give some help with creating a weld..? I want to show a weld between a piece of honed tube and a clevis. Both are prepared, 45 degree chamfer on each and I want to show a groove weld, if that is the correct weld type to use. PTC have excelled themselves again with their...
  7. hydromech

    Magnetic Drive & Seal-less water pumps

    Hello... Has anyone got any ideas of, or has anyone seen a water pump with a magnetic varible drive coupling. One without a shaft seal would be nice. We have considered many ideas but we really need some inspiration. We need a strategy that is fail safe, with a mechanism that seperates the...
  8. hydromech

    Lack of traffic in this forum...why?

    Hello all... Would anyone like to try to explain why this forum sees so few questions compared to some of the other forums on the site? Lack of knowledge about the site..? Nobody wants to know about hydraulics..? Nobody has any hydraulic faults..? I'm think of making a ghost name and...
  9. hydromech

    CAN BUS + PROPORTIONAL HYDRAULICS

    Hello... I'm on self help crash course about CAN BUS networks. I just have one question about them with regard to proportional and servo amplifiers. Can't get the answer off the interweb... I think they work like this... The PLC puts an output to the CAN transmitter...
  10. hydromech

    Surface Finish Symbols

    Hey... Is there a way to turn off the surface finish symbols in the model view without removing them from the drawing? When the symbols are layered off in the model they disappear from the drawing which is not always easy to spot. Thanks in advance Hydromech
  11. hydromech

    Insert Here?

    Is there a way of specifying the required position of the Insert Here arrow? In a large file I find it's a pain to drag the arrow up and down. I want to be able to specify the features that I want to place it between. Anyone Know? Thanks Hydromech
  12. hydromech

    Inventor - Pro-Engineer

    Hello All... A straight forward question... Ignoring performance and other "stuff"... I am very proficient with Inventor Pro 10...I am starting a job on Monday(20th March)at a place that uses Pro Engineer...how will I get on??? I am of the opinion that if you can use parametric solid...
  13. hydromech

    Stress Analysis Units

    Is it possible to change the stress analysis units in Inventor 10? The standard units are Newtons for force and Pascals for pressure and I want to use Kilo's and BAR.
  14. hydromech

    Generic Question

    To anyone who knows the answer... It is said that energy cannot be created or destroyed, only transformed into another state. My question is...into what form is kinetic energy transfered? A wheel for example...you push it and it moves. You have transfered energy into it. It stops rolling...
  15. hydromech

    Pictures in Sketches

    I am trying to insert a picture into a sketch. I assumed it would be straight forward. I have tried *.BMP & *.JPG files Does anyone know why they wont go in...am I missing something.
  16. hydromech

    Pictures in Sketches

    I am trying to insert a picture into a sketch. I assumed it would be straight forward. I have tried *.BMP & *.JPG files Does nayone know why they wont go in...am I missing something.
  17. hydromech

    CAD ADMINISTRATOR/STYLE LIBRARY

    Can anyone help me with my style library? I want to create some new material styles and the style editor is only "read only". IV9 help says only the CAD Administrator can change the style library. My question is...how do I become the CAD Administrator?
  18. hydromech

    HIDING LINES?

    Is it possible to remove the lines that show the segments on a sweep or a loft?
  19. hydromech

    Transitional Constraints make IV9 Crash

    Does anyone else have trouble with transitional constraints? When I try to drive the constraint Inventor crashes.

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