1. For downloading SimTools plugins you need a Download Package. Get it with virtual coins that you receive for forum activity or Buy Download Package - We have a zero Spam tolerance so read our forum rules first.

    Buy Now a Download Plan!
  2. Do not try to cheat our system and do not post an unnecessary amount of useless posts only to earn credits here. We have a zero spam tolerance policy and this will cause a ban of your user account. Otherwise we wish you a pleasant stay here! Read the forum rules
  3. We have a few rules which you need to read and accept before posting anything here! Following these rules will keep the forum clean and your stay pleasant. Do not follow these rules can lead to permanent exclusion from this website: Read the forum rules.
    Are you a company? Read our company rules

Tutorial DIY 3D printed Sim Racing Hydraulic pedals SRT

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

  1. 7HUND3R

    7HUND3R Active Member

    Joined:
    May 25, 2020
    Messages:
    145
    Balance:
    1,054Coins
    Ratings:
    +38 / 0 / -0
    My Motion Simulator:
    Arduino
    @Lebois, I am attaching the 2 3d designs of the brake caliper fixer in case you want to put them on your blog.

    Attached Files:

    • Like Like x 1
    • Useful Useful x 1
  2. Lebois

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

    Joined:
    Dec 10, 2018
    Messages:
    266
    Occupation:
    Math teacher
    Location:
    France
    Balance:
    2,016Coins
    Ratings:
    +141 / 2 / -0
    My Motion Simulator:
    2DOF
    Thanks @7HUND3R

    I started to make tuning tutorials on Youtube, feel free to share if you like it ! :)
  3. 7HUND3R

    7HUND3R Active Member

    Joined:
    May 25, 2020
    Messages:
    145
    Balance:
    1,054Coins
    Ratings:
    +38 / 0 / -0
    My Motion Simulator:
    Arduino
    I would like to have something a si @Lebois. Some inverted pedals.

    [​IMG]
  4. Lebois

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

    Joined:
    Dec 10, 2018
    Messages:
    266
    Occupation:
    Math teacher
    Location:
    France
    Balance:
    2,016Coins
    Ratings:
    +141 / 2 / -0
    My Motion Simulator:
    2DOF
    I already tried it a few months ago.. That's a lot of work for nothing... You don't feel the differene. And it's very hard to have a mount that is stiff enough to have no flex...
  5. ibohan00

    ibohan00 New Member

    Joined:
    Oct 5, 2020
    Messages:
    13
    Occupation:
    Engineer
    Location:
    CA, USA
    Balance:
    102Coins
    Ratings:
    +5 / 0 / -0
    I finally had time to test what I have so far with my setup. I have everything set up with a wooden brake lever and the GT throttle pedal.
    IMG_20201107_180157.jpg

    I decided to make a connector board because I hate soldering wires together. Its a very simple board with terminal blocks. Its makes connecting all the wires together a lot easier, but I underestimated how small the wires are in the DB9 connector I used. I think next time I'll design the board to have the DB9 connector on the board (or whatever connector I decide to use). I have 4 more I don't need. If anyone is interested and wants to pay for shipping, I can mail them. I can also order more.
    IMG_20201102_165911.jpg Screenshot 2020-11-07 182737.png

    I did a quick test with an Arduino to see if everything was working. The throttle works great. The brake though is only ranging from 100 to 300. The throttle ranges from 30 to 1000. I need to look into it, maybe 100-300 is fine. The pedal feels fine to me, but I'm having a hard time with the cheap threads leaking on the caliper. Both the banjo and the bleeder is leaking brake fluid. I definitely don't want to bring this into the house until I can fix the leaking.
    • Like Like x 1
  6. Lebois

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

    Joined:
    Dec 10, 2018
    Messages:
    266
    Occupation:
    Math teacher
    Location:
    France
    Balance:
    2,016Coins
    Ratings:
    +141 / 2 / -0
    My Motion Simulator:
    2DOF
    @ibohan00 thanks for your feedback !!

    Did you put joints between the pressure sensor and the banjo bolt ?
  7. 7HUND3R

    7HUND3R Active Member

    Joined:
    May 25, 2020
    Messages:
    145
    Balance:
    1,054Coins
    Ratings:
    +38 / 0 / -0
    My Motion Simulator:
    Arduino
    you have to put Teflon or sealant on the threads of each piece.
  8. ibohan00

    ibohan00 New Member

    Joined:
    Oct 5, 2020
    Messages:
    13
    Occupation:
    Engineer
    Location:
    CA, USA
    Balance:
    102Coins
    Ratings:
    +5 / 0 / -0
    I put new gaskets around the banjo. I think I'll need to take them off and clean the area and replace the gaskets again.

    NPT threads and bleeder valves are designed to be sealed without sealer and *shouldn't* need any. The brake fluid actually dissolves Teflon, but I may end up using a different thread sealer. I'm guessing the cheap caliper wasn't threaded correctly.
  9. 7HUND3R

    7HUND3R Active Member

    Joined:
    May 25, 2020
    Messages:
    145
    Balance:
    1,054Coins
    Ratings:
    +38 / 0 / -0
    My Motion Simulator:
    Arduino
    I have Teflon on it. If I don't put Teflon there are leaks. And if that is true, the brake fluid breaks the Teflon. But as I mentioned, if I don't put Teflon on it, there are leaks.
  10. Lebois

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

    Joined:
    Dec 10, 2018
    Messages:
    266
    Occupation:
    Math teacher
    Location:
    France
    Balance:
    2,016Coins
    Ratings:
    +141 / 2 / -0
    My Motion Simulator:
    2DOF
    Guys. A tip given by an high end pedalsets seller : use liquid coolant !
  11. 7HUND3R

    7HUND3R Active Member

    Joined:
    May 25, 2020
    Messages:
    145
    Balance:
    1,054Coins
    Ratings:
    +38 / 0 / -0
    My Motion Simulator:
    Arduino
    Use liquid coolant? of car? coolant? as brake fluid?
  12. Lebois

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

    Joined:
    Dec 10, 2018
    Messages:
    266
    Occupation:
    Math teacher
    Location:
    France
    Balance:
    2,016Coins
    Ratings:
    +141 / 2 / -0
    My Motion Simulator:
    2DOF
    yes, instead of the brake fluid. It won't damage the joints.
  13. 7HUND3R

    7HUND3R Active Member

    Joined:
    May 25, 2020
    Messages:
    145
    Balance:
    1,054Coins
    Ratings:
    +38 / 0 / -0
    My Motion Simulator:
    Arduino
    Well, I'll have to try.
  14. Chris Indeherberge

    Chris Indeherberge Designer / dreamer

    Joined:
    Aug 1, 2018
    Messages:
    11
    Occupation:
    Graphics Designer
    Location:
    Belgium
    Balance:
    171Coins
    Ratings:
    +2 / 0 / -0
    I've read from some other builders that paraffine oil and transmission oil also would be good options.
  15. 7HUND3R

    7HUND3R Active Member

    Joined:
    May 25, 2020
    Messages:
    145
    Balance:
    1,054Coins
    Ratings:
    +38 / 0 / -0
    My Motion Simulator:
    Arduino
    But I don't understand why those fluids are better than brake fluid. Brake fluid is supposed to be made for the same purpose. So I don't understand why coolant is better than brake fluid.
  16. Chris Indeherberge

    Chris Indeherberge Designer / dreamer

    Joined:
    Aug 1, 2018
    Messages:
    11
    Occupation:
    Graphics Designer
    Location:
    Belgium
    Balance:
    171Coins
    Ratings:
    +2 / 0 / -0
    Brake fluid is very aggressive. You don't want to spill it on something. It literaly eats carpaint for breakfast.

    It is also made to withstand very high temperatures (+300-400 degrees C) caused by friction when braking. In sim racing we don't have those high temperatures.

    But no one will stop you to use real brake fluid if you want too use it.
    Last edited: Nov 12, 2020
  17. ibohan00

    ibohan00 New Member

    Joined:
    Oct 5, 2020
    Messages:
    13
    Occupation:
    Engineer
    Location:
    CA, USA
    Balance:
    102Coins
    Ratings:
    +5 / 0 / -0
    I guess all we need is some kind of hydraulic fluid. I think in food processing they use vegetable oil for hydraulic fluid, but I'm not sure if its the same mix as what we buy in the grocery store. I think I'll try that and see what happens. Mineral oil might work too.
  18. 7HUND3R

    7HUND3R Active Member

    Joined:
    May 25, 2020
    Messages:
    145
    Balance:
    1,054Coins
    Ratings:
    +38 / 0 / -0
    My Motion Simulator:
    Arduino
    I know that brake fluid is abrasive, but it can burn something if you spill it. If you are careful when handling the brake fluid there is no problem. You do not manipulate the brake fluid, daily, you only manipulate it the day you fill the circuit but after that you no longer have to remove the brake fluid at all. That's why I don't see any point in not using the brake fluid. If you tell me that the coolant or mineral oil improves the feel of the pedal, then if I see a reason to use fluid other than brakes.
  19. ibohan00

    ibohan00 New Member

    Joined:
    Oct 5, 2020
    Messages:
    13
    Occupation:
    Engineer
    Location:
    CA, USA
    Balance:
    102Coins
    Ratings:
    +5 / 0 / -0
    The biggest issue I see is that we need some kind of sealant to keep it from leaking, and if you're using teflon tape, eventually the brake fluid would eat away the teflon and it will start leaking again. I don't want to damage my carpet, so I would rather use teflon tape with some other fluid that's safer.

    edit: Another thing that I just thought about is if the brake fluid would eat away the pressure sensor. I'm not sure what material the sensor is using to seal the fluid.
  20. Lebois

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

    Joined:
    Dec 10, 2018
    Messages:
    266
    Occupation:
    Math teacher
    Location:
    France
    Balance:
    2,016Coins
    Ratings:
    +141 / 2 / -0
    My Motion Simulator:
    2DOF
    @ibohan00 I don't think that it can damage the pressure sensor, I never had any problem (they are even use on commercial hydraulic pedals)