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  1. johnab

    Hex tor trivalent coating

    what exactly the dacro is? Can you explain in brief the hex & tri coating?
  2. johnab

    Hex tor trivalent coating

    There has been ongoing issue from Hex to Trivalent chrome conversion. Just a few questions since I forgot the basics for coating. Does Dacro coating always a hexavelent chrome? What are the methods for hex to trivalenet chrome free - Does geomet is an alternative for Hex to Trivalenet...
  3. johnab

    Few questions

    (1) For the given cumulated dimension, I need to have symbol 1 to be filled circle instead of crossed circle. I don't see any option to change the current symbol. ( I tried to loook into Tools ----options but didn't help) (2) For the manufacturer's mark - how to write in a dual text format...
  4. johnab

    Sheet size

    It did work, Thnks for reply,
  5. johnab

    Sheet size

    I have only limited format available (max size is A0 format) but don't see any custom format available? Can you tell me how to customize sheet format?
  6. johnab

    Sheet size

    I able to turn off the Display but when I save as .pdf, I lost many content.(!0 was the sheet size & due to many details I need more space) Does someone have solution?
  7. johnab

    Drafting question

    Under the cumulated dimension, I don't see zero parallel to other dimension. I checked under the properties____Symbol but somehow it doesn't allow to edit Basically, I see the circle marked with 'x' mark but offset from otehr dimension. But,wanted to have zero parallel with other dimension...
  8. johnab

    Sheet size

    Looks like i'm facing difficulties since started using v5 after some time. I'm using A0 Size sheet size for dwg & due to extensive detail dwg, I crossed the limit of sheet size. One way, I can see to reduce the size of view that I don't want to do so any other suggestion?
  9. johnab

    update issue for dwg

    I have 3d model & working on associated detail dwg. As you know, when we draw the view from 3d models than need to delete a lot of extra lines to avoid misunderstanding. Also, I deleted section line hatch mark. Now, Even there is no change to model, sometimes i receive update command while...
  10. johnab

    link modified solid part with dwg

    It did help! thnks a lot !
  11. johnab

    link modified solid part with dwg

    Need more help, I tried to look into properties but couldn't find any info. You want me change solid part file link or dwg link or new modified solid part link? considering - Original solid Part X. CATPART & dwg X.CATDwg New modifie part with new part name Y.CATPART (Its same as X but having...
  12. johnab

    link modified solid part with dwg

    I have solid part name called "X.CATpart" & associated "X.CATdwg" with many diemensions included. For the same solid part "X", I received modified soild geometry with different part name. Now, I just want to incorporate only changes to dwg & thats why I tried to save the new modified part...
  13. johnab

    Drafting question

    Under Catia V5 drafting, I want to create dimension (arrow at one end only for larger dimension in detail view) but couldn’t find the proper command. It was easy with Catia V4 but not able to find option with Catia V5. Tried to use techoloical feature dimension but couldn't get/understand it...
  14. johnab

    Air Flow results comparison

    I was just comparing air flow pressure drop for intake system - analytical results (start CFD- by out side vendor) vs actual testing For the same flow - Analytical results showing more pressure drop (say 7 kPa) while actual testing shows around 3 kPa? Does it mean Analytical Flow calculation...
  15. johnab

    printing issue

    Since its a pdf file when I open its default open with Acrobate reader. Do you want me install any program/software?
  16. johnab

    printing issue

    I have few pdf dwg from originally Auto CAD & when i tried to print it - the quality of print is very bad. blurr print. Can anyone knows the solution? Instant reply will be appreiciated.
  17. johnab

    view from 3D

    It may be the easy question but can someone explain how to use command "view from 3D" under Catia v5 drafting mode? Its been a long time since I used V5 so step by step will be helpful.
  18. johnab

    software comparison for intake/exhause developement?

    Can anyone share experience for GT power & Ricardo wave in terms of Intake & exhaust developement? If need to go for training than any preference/suggestion for GT power vs Ricardo wave?
  19. johnab

    engine efficiency related

    Regarding 2nd question from above post The question was raised because - to increase the volumetric efficiency, we need to boost more air at the valve closing time that requires keeping specific length of intake (considering sound speed 1343 fps). Assume it takes 0.015 seconds between when the...
  20. johnab

    engine efficiency related

    As the pistion accelerates downward and air will drawn to cylinder will cause a presseure depression behind the valve.The pressure depression travels away from the valve at the speed of sound and reflected at the open end with 180 degree phase difference. Pressure pulse will arrive back around...
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