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Tutorial DIY 3D printed Sim Racing Hydraulic pedals SRT

Discussion in 'DIY peripherals' started by Lebois, Jan 26, 2020.

  1. Sieben

    Sieben Active Member

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    Just try to turn fully better on the transducer with a wrench. I sealed only the adapter to the braking line T-joint, but may depends.
  2. Lebois

    Lebois (maybe I am wrong, but who knows...)

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    Yeah I think I will definitely advice some teflon tape or seals...
    Well those times I don't where to go... I didn't manage to use a 3d printed torsion spring... I now have ordered this one, but it won't be there before a long time... I should probably go back to the 3d printed torsion spring, but that means that I will need to print a lot of parts again...
    Then I could add many upgrades to the current accelerator version, but I would prefer to work with the new springs..
  3. Lebois

    Lebois (maybe I am wrong, but who knows...)

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    I think I will wait that some guy with new parts do the test :)
  4. Sieben

    Sieben Active Member

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    Well I mean, when I thought it was already tightened up good, it was a room where to go some more to make it a good sealed joint. Might be a case.
  5. HCR Mad Bull

    HCR Mad Bull Member

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    If you have to do it up that tight then a crush washer will defiantly help so that you don't end up damaging any parts.
  6. Ben Schippers

    Ben Schippers New Member

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    I am very curious how you set up. The electronics to go from the sensors to plugging into usb and being seen on computer as an input device.

    Any guides or reading materials you can suggest
  7. Lebois

    Lebois (maybe I am wrong, but who knows...)

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    There is various solutions. Basicaly, if you have a pedal set plugged into your wheel, you can direclty plug the plastic pedals into your wheel (mine are plugged into the simucube). You can also plug the pedal into an arduino.
  8. Sieben

    Sieben Active Member

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    Did you work with npt threads before?
    Do you know how the NPT threads looks like and works compared to metric? )
  9. HCR Mad Bull

    HCR Mad Bull Member

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    Nope not at all tbh I've hardly ever heard of them before being mentioned here. Just seems a bit off that you have to tighten it down that hard and can't use something to seal it properly.
  10. Lebois

    Lebois (maybe I am wrong, but who knows...)

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    Well, I am french, here we are using almost exclusively the metric system. May I suggest that NPT system are more common for english and american people ? :)
    the NPT system is something completly new for me.
  11. Sieben

    Sieben Active Member

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    It seals itself good by means of that ) That's the point. If Lebois tightened it up as it should be, but still has loose connection, the crush washers are not what should be used with npt's)
  12. CTF

    CTF New Member

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    NPT threads are indeed used in the US. The threads are not continuous like in the standard or metric system where the thread is the same all along the screw, but are actually tapered and usually become more and more shallower as they get further from the opening. This helps with sealing, but pipe sealant can be used I believe in most cases.
    • Agree Agree x 1
  13. HCR Mad Bull

    HCR Mad Bull Member

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    Thanks for that information, I've never heard of that kind of screw and thread before and didn't even think of such a design would be made before.
  14. Lebois

    Lebois (maybe I am wrong, but who knows...)

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    I gave up the idea of using a pla spring... You can't print a pla spring that is compact, stiff, and with long travel...
    I now work on improving the previous version. I will release brake v5.2 soon too.
  15. HCR Mad Bull

    HCR Mad Bull Member

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    Good timing about that post, I just got my 3d printer today and have been setting it up and was going to start making your pedals in the next couple of days
  16. Lebois

    Lebois (maybe I am wrong, but who knows...)

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    The printer spent all the night printing the old pedal instead of the new one :(
    Don't worry @HCR Mad Bull , it's coming ^^
    BTW. How will you fix it to your support ?
  17. HCR Mad Bull

    HCR Mad Bull Member

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    I haven't quite figured that one out yet, also just waiting on the hydraulic assembly to be delivered.
  18. HCR Mad Bull

    HCR Mad Bull Member

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    Yep I've already done that wasn't quite an all night print yet though, frustrating isn't is.

    Looking forward to the new update on the pedals! What's changed about them?
  19. HCR Mad Bull

    HCR Mad Bull Member

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    Just had a thought about the accelerator pedal, wouldn't it be better to have it in a similar configuration to the brake pedal? As in have a rod attached to the pedal with a potentiometer/hall sensor on the other side to detect the movements? That way you don't need to design everything so close together at the bottom on the pedal and just have a spring.
  20. Lebois

    Lebois (maybe I am wrong, but who knows...)

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    Hmm... in fact, I would have say the opposite... The strategy is to design a really cheap (yet effective) accelerator pedal. Then, people could build an brake pedal the same way. It would make a two pedals set for... 30€ ? BTW I also wanted a compact and light pedal, because I was using a 2DOF simulator that lacked a bit of power...
    Later, I am thinking of designing an all new accelerator pedal that would have a classic design, like fanatec v3 accelerator pedal. It would you a linear bearing and be a bit more expensive...
    To conclude, you could build the accelerator pedal the way you build the brake pedal. But it would be quite expensive, and you wouldn't have the possibility to tune the start and end stops, or the spring preload.

    I will publish a changelog latter. But I can already say that the mc support is now using M6 screws. The holes make a 110x44mm rectangle. I am designing small parts that allow to use wood screws too.