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  1. braddles90

    Dana spicer 13-15-17

    13-15-17 refers to the BCD of the bolts that connect the flexplates on the converter to the flywheel on the engine (13", 15", 17"). Need to check on the engine flywheel what dimensions you have then specify that when ordering. If you're working directly with Dana or through a distributor...
  2. braddles90

    batch conversion of CANBUS logged data

    My previous experience may have been a bit caveman-level, but I found it was possible to rename the .ASC files to .CSV and then make a simple MATLAB code to convert the raw CAN numbers into the signals of interest I was reading. It was pretty straightforward to have a batch Matlab script load...
  3. braddles90

    Is This Measurement Method Accurate?

    The problem is you're using an indirect method of calculating the pin forces, so it depends on what you are trying to work out. Validating design calcs? Maybe OK. Trying to reverse engineer pin failures? Maybe not OK. Most likely you won't pick up any shock loading on the pins due to damping...
  4. braddles90

    WhatsApp Groups made for projects- what are my rights?

    This is an interesting discussion - I work in China for a component supplier (different industry but same challenges) and this is typically the MO for working over here, it's basically an expectation that *some* level of communication will happen through WeChat (Chinese WhatsApp). I've had...
  5. braddles90

    Maintaining Track of my notes

    I bought an iPad Pro for work a couple of years ago with the pencil, and I think it's very convenient for taking notes at work. Not a perfect solution, but I can keep a single note file for clients (instead of worrying about leaving blank pages, etc). The pencil is real smooth and accurate...
  6. braddles90

    Access to currency when traveling abroad

    I would have a chat with your banks to make sure they've opened up the access to foreign currency withdrawals before travelling (I guess you have, but just a general comment). Honestly for China, the easiest is just to withdraw a stack of RMB before you get there, and make sure work will...
  7. braddles90

    BSPP STRAIGHT THREAD TORQUE REQUIRED TO COMPRESS RUBBER WASHER SEAL

    What's the application here - you mention water pump, is this a hose fitting for an engine or something? Considering the type of hosetail fitting you're showing here, in real life I would doubt that anyone actually working on this is reaching for a torque wrench or considering the number of...
  8. braddles90

    Oil sending unit circuit

    Not an electrical solution, but can you replace the lines with stainless braided hoses (or similar)? I used to work in mining trucks where broken hoses causing fires is a huge issue. Engine/Truck OEM's won't change from the rubber hoses, but (at least in Aus) operators were strongly encouraged...
  9. braddles90

    FEA verification with hand calculations

    I wonder if there is some confusion between calling them 'hand calculations' and the intent of telling someone 'do some hand calculations' - I mean, the example regarding the egg would be terrible to do on paper, but could be put into a spreadsheet in a couple of hours. No one (well, probably no...
  10. braddles90

    SHS to top plate weld - Calculation Throat

    There are a bunch of research papers for flare bevel weld effective throat thicknesses - try this one: https://www.aisc.org/globalassets/aisc/research-library/effective-throat-for-flare-bevel-and-flare-groove-welds.pdf
  11. braddles90

    Tapped Hole for Lifting Eyebolt - Edge Distance

    Most people think you're trying to lift it in a horizontal orientation, but it sounds to me like you're trying to tap the outer diameter (i.e. through the thickness of the flange)? Is there a reason you couldn't put a D-shackle through one of the bolt holes in the flange instead, to lift the...
  12. braddles90

    The problem with MOOCs

    My wife did a statistics course through CourseRA and John Hopkins last year - she paid to get the course accredited which included doing a typing test (to create a typing 'fingerprint' and taking a photo with the webcam for each assessment she sat). Not sure how effective this is at preventing...
  13. braddles90

    Maintenance of explosion proof motors by plant personnel.

    We deal with Ex gear for underground mines, and basically every piece of electrical equipment that carries an Ex rating can only be worked on by technicians with proper qualifications. If your motors are Ex, there should be protection methods around the terminal enclosure as well (either that...
  14. braddles90

    Surface Callout for air-tight mating

    To give you some numbers, we manufacture parts that are typically 10-20mm flange face width (from pressure side to atmospheric side), surface finish 1.6, face flatness to 0.2mm and they will leak no matter what. To be honest I'm not sure how far you could go to make a gas-tight seal - as...
  15. braddles90

    Masters degree in Australia

    Is this really the case? My old university in Aus recently just restructured their bachelor degree programs in all disciplines. They are also now offering a 1 year Masters "extension" if you finished the bachelor with them, to entice current students to stay a year longer, or older students to...
  16. braddles90

    Team work schedules

    To be honest, the best and simplest system I ever worked in was a whiteboard where every person had a different colour Post-it note, and the board was divided into Inbox, Ongoing, Review and Completed. Every morning the team gets together and spends no longer than 15 minutes reviewing what was...
  17. braddles90

    Pneumatic or hydraulic time delay control

    Parker and Festo both have pneumatic versions, we have used them on different applications. Parker part number is PRT-D10 (for example), Festo has the VZA or VZB valves. These are purely logic valves, but you can use them to drive further circuitry to reset whatever you need to do. Parker's...
  18. braddles90

    Flywheel fastener design, clamping force and dowel shear strength

    We recently had to design a new flywheel for a ~170kW 6 cylinder diesel for an off-road machine application, and our fabricator came back to us with the same concerns when we altered the OEM interface, which didn't use any dowels. There was just a machined spotface in the back of the flywheel...
  19. braddles90

    Jacket Cooling Water Bypass (Where/When to bypass?)

    I'm not sure what manufacturer your engine is, but for example CAT engines have cooling system installation manuals, where they run through basically everything you need to consider in setting up the engine cooling system (layouts, inlet vs outlet controlled cooling systems - and what that means...
  20. braddles90

    CFD For Engines

    Hey Panther, For those operating simulations you've noted above I think you need a mix of both simple CFD and the 1D simulation software. Trying to run CFD on a full cylinder cycle with moving intake/exhaust valves is the stuff of PHD theses/heavy heavy calculations. YOu need things like...

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