2GodBDGlory

Eurobricks Dukes
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Posts posted by 2GodBDGlory

  4. Posted

    Another option that might have slightly less stress on those gears would be to build it such that the axlehole on the gear only goes to pinholes on the steering beam. Normally, that would make the gear do nothing, but if you left that 2L beam on the top, it would fit between two of the teeth and fix the gear to the arm. It would just then have the advantage that the beam isn't forcing the gear to rotate a half-tooth away from where the axle fits it. Nice work, though!

  5. Posted

    I like the gearbox complexity! Looks like you're putting some real effort into it. I also like the torsen diff! It's something that seems to be thrown around as a concept a lot, but rarely ever put into a model. That design is about as practical as it gets, though! I haven't seen the one with a turntable on each side, and it could be made skinnier by replacing one of them with a connector, but maybe the extra strength is worth it

  6. Posted

    29 minutes ago, SNIPE said:

    I guess you could replace one shock abroeber on each side with a medium linear actuator, for the adjustable ride height, however a worm gear arrangement may be better (with lots of bracing). The actuator should not compress the spring, and only change the wishbone angle.

    I'm not sure I understand the thinking there. If you directly replaced a shock with a linear actuator, wouldn't you lose all suspension? Wouldn't the actuator take all the weight of the car, and prevent the shock from ever compressing? Or are you talking about something else

  11. Posted

    3 hours ago, Seasider said:

    Regarding the Panhard rod, found this for you …

    “The R was for roadholding, and it added much-needed suspension enhancements that were dictated by then engineering director, Mike Dunn. These changes included stiffer anti-roll bars and firmer damping, along with a Panhard rod to limit the lateral movement of the rear subframe. It worked.“

    I can tell you that Bentley uses isolated rear subframes (mounted to the body via bushes, not hard bolted) and so adding a Panhard rod would limit the Subframes lateral movement in a similar way to a live axle on leaf springs.

    Wow, a Panhard rod to keep the subframe from moving! That's some wild engineering!

  14. Posted

    1 hour ago, damian_kane_iv said:

    Idk if you've considered this either, but the new wheel hubs that the 1:5 motorcycles use might also work nicely. 

    You could embed a 9.5L or a 6.5L stock into the top and build the necessary steering links around the sides

    I've looked into that, but there's surprisingly few wheels that actually clear the shock absorber in that setup, and it doesn't give any kingpin inclination. It is an interesting idea, though!

  16. Posted · Edited by 2GodBDGlory

    This looks like it might be the correct topic to talk about this issue in...

    I'm working on a project using a Mindstorms EV3 running EV3dev with Python coding. I had written my code and gotten everything working the way I wanted, and had successful tests, but then the rechargeable AA batteries I was using in it died. I'd been wanting to have it powered from the wall eventually, so while I was charging them, I rigged up a basic battery eliminator sort of thing, with the positive and negative contacts wired to the contacts of a USB-chargeable 9V battery, which I then plugged in via USB. After doing this, it booted up just fine, but a couple other issues became apparent. When I went to the File Browser on the brick and tried to select my program as before, nothing would happen, except that a new file under it would appear with the name main.py.err.log, and the same thing would happen for any program loaded on to the brick. Second, when I plugged it back into my computer over USB and tried re-connecting to VSCode, it would start the process, and then fail, giving me me an "Exit code 127" message. After that I wondered if I just didn't have enough amperage, so I plugged it in to a 9V transformer, with the same symptoms of powering on but not working. I then put AA batteries back in, and it still didn't work right! I also tried removing the EV3Dev SD card, rebooting, powering down, reinserting it, and rebooting again, but nothing changed.

    Does anyone have any idea what's going on here? It's a core part of a larger project that I've been working hard at for a good while, and that I had pretty much just got working, so I'd be really disappointed if I couldn't get it working again!

    Any help would be appreciated!

    [EDIT] My next step will probably be restoring the stock firmware and seeing if I can get programs to run on it. If that works, perhaps I could just rewrite my code in whatever the standard is for EV3 and go with that? Or maybe I need to try reflashing the EV3dev SD card

  18. Posted

    1 hour ago, dantheman12 said:

    Some more progress:

    Did some work on the engine bay with the sr20, quite happy with it so far, still can add a few little details and need to make the intercooler for the front, but that will require redoing some of the front part of the frame.

    IMG_1430[1] by dan.vperger, on Flickr

    After 2 more designs of the hubs i'm finally happy.

    This monstrosity using a 3L bar to hold the bottom of the hub in place so that the geometry of the strut was perfect, but meant there was heaps of camber, and wasnt as sturdy as I wanted:

    IMG_1427[1] by dan.vperger, on Flickr

    The finalised design:

    IMG_1433[1] by dan.vperger, on Flickr

    does not have perfect geometry but pretty close, so far it's working fine.

    Put some steering in, but I'm going to need to tweak it a bit, and also need to do some more rebuilding of the frame to accomodate the larger wheels. 

    IMG_1435[1] by dan.vperger, on Flickr

     

    Haven't decided if I should tackle the front bodywork or work on the rest of the mechanical parts of the car like the gearbox and the back suspension. The bodywork is not my strong point, as I never get to that stage on my projects  :laugh:

     

    edit: attached wrong picture

    also does anyone know if I can change the title of this post? Should probably make it WIP not MOC

    The detailed engine bay looks nice!

    You should be able to change the title of the topic by editing the first post in it

  24. Posted

    14 hours ago, JCT250 said:

    Anyone know when the new version will be released. Just changed to a new iPhone and the app didn’t install. Apparently it’s no longer in the App Store. Based in New Zealand and likewise have a number of sbricks. Going to be a bit annoyed if the app has been removed from the global store and is only available is certain markets. 

    Ooh, that sounds annoying! As an Android user, I can often just download apk. files to install apps not in the store, but I'm not sure if that method works with Apple or not