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  1. ddace

    electronic rust protection

    thanks Brimmer for your input. not convinced but maybe intent; else i would not be here checking. I guess somewere deep inside i wanted the guizmo to work. But lets just say i never lose my scientific critisisim They make it sound like its static electricity that is doing the miracle and I did...
  2. ddace

    electronic rust protection

    this is not the same product ???
  3. ddace

    electronic rust protection

    How would you explain why a reputable retailer like Canadian Tire endorse such a product if its a scam? I was even told that companies like nissan have their own version of those guizmos that they sell and install???
  4. ddace

    electronic rust protection

    I have red that link and it does not seem to be the same technologie used by counteract.
  5. ddace

    electronic rust protection

    hey I would like the experts opinion on the "counteract electronic rust protection system" for automobiles by Canadian Tire thanks
  6. ddace

    electronic rust protection

    hey there I would like to know the pro's opinion on the Canadian Tire "counteract electronic rust protection system" thanks
  7. ddace

    static Electric Discharge hazard (more ???)

    Oxilume Thanks for your time. This unit remains on solid ground. I have decided to go with the dip pipe because of the the risk for static but also because of the emultion(mousse) caused by fuel injection by the top. But i still would like to know how this is handeled in the auto/truck...
  8. ddace

    static Electric Discharge hazard (more ???)

    This is a parallel question regarding the "static electric discharge hazard " thread The thread is quite interesting and has provided me some good information on the subjet. I am curently desining the fuel system, including the day tank, for a mobile diesel genset (approx 100gal/400l). I...
  9. ddace

    Static Electric Discharge Hazard

    This tread is quite interesting and has provided me some good information on the subjet. I am curently desining the fuel system, including the day tank, for a mobile diesel genset (approx 100gal/400l). I would like to know how these concerns are avoided in the transport industry ? I.E. Most...
  10. ddace

    bolt & crown nut with cutter pin

    thanks for the input guys CWIC I like the term "Jesus Nut" lol. I never herd that one before. But I see what you meen. That same principle is applied on front wheel bearings on most rear wheel drive vehicules. P.S What is specifier/regulator? MintJulep What do you mean by "large amount of...
  11. ddace

    bolt & crown nut with cutter pin

    This question might seem lame but I want to know if it is at all possible, for a 1 inch grade 8 bolt torqued at only 200 ft*pound (very little preload) secured with a cutter pin, could come loose ? This is to secure diesel engine mounts on a skid base. So the joint will be exposed to engine...
  12. ddace

    Fan Intake Sizing

    the rule of thumb says you target approx 500ft/min (speed)at intake: 19500/500 = 39 sq ft of free surface area at intake if there is no loovers. With loovers you should consider them like 50 % of free area so you would need 2*39 sq ft. at exhaust is the same but you can target 1000ft/min...
  13. ddace

    Fan Intake Sizing

    I think your problem has to do with the CFM. you went from 12400 to 19500 in the same enclosure. Your intake and/or exhaust surface area are probably to small for that much flow. Please provide more details on sizes of those areas and if there is loovers and/or dampers. Will be easier to...
  14. ddace

    engine hard mounting vs thermal expansion

    Well i guess everyone agree on one thing My idea for allowing joint to slide is not popular... Greg i like your observation and it nice to know that it is difficult to obtain a montage that is stiffer than the max permitted by specs. I will have to check but i think stiffness spec is the same...
  15. ddace

    nylon lock on nut vs loss of preload when torquing

    "ADMINISTRATION KILLS ENGINEERING" I am rigidly mounting a diesel engine with a through hole/slot that is connected to a rigid solid skid base.I am using 1 inch grade 8, coarse tread, zink plated shoulder bolts,washers at both ends and nuts have a nylon lock to help prevent loosening because of...
  16. ddace

    engine hard mounting vs thermal expansion

    Again i repeat myself but this is grrrreat input I will try to answer all questions 1.The purpose of max resistance force (as stated in the installation drawing of engine) is "To protect crankcase and engine mounts from excessive forces caused by thermal expansion." That is why I do not...
  17. ddace

    engine hard mounting vs thermal expansion

    Great input guys Here are a little more details yes it is a rigid mounting with a through hole/slot that is connected to a rigid solid skid base and i am using 1 inch grade 8, coarse tread, zink plated shoulder bolts and nuts have a nylon lock for vibration effect. Flexible mounting is not an...
  18. ddace

    engine hard mounting vs thermal expansion

    "ADMINISTRATION KILLS ENGINEERING" Here it is I am designing a 2.7Mw mobile genset. The engine is a MTU 20v4000 that has four(4) mounts that are attached to a skid base. The installation specs require that mounting must be permissive to thermal expansion 1mm side to side with max...
  19. ddace

    Value for convection coefficient (h)

    I am desperatly trying to establish a good ball-park figure for the value of convection coefficient h in a forced air flow (fan) condition. This will be used to determine heat regection of an exhaust system inside a trailer(enclosure). I understand that h~10 is a rule of thumb for natural...
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