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  1. Arthur Beloso

    Master Cylinder Design

    No. Just the o'ring by itself.
  2. Arthur Beloso

    Master Cylinder Design

    We believe the o'ring fail because of excessive wear ( it is EPDM ). For the finishing we use the recommened by our supplier ( Rf < 4µm for the bore and Rf<16µm for the piston ). Yes, the MC is made of aluminium ( SAE 6351 ).
  3. Arthur Beloso

    Master Cylinder Design

    I get your point MikeHalloran. Actually, some years ago we used to buy our parts, and do tests with them, just like you said. But with the time, we thought in designing by ourselves, not only to ( maybe) improve the perfomance, but also to develop a better understaning of the manufactiring and...
  4. Arthur Beloso

    Master Cylinder Design

    Oh, sorry, i wrote wrong the material. Yes, we actually use EPDM o'rings like TugboatEng said. About buy it ou design it. Well, since it is a racing competition I think is good to design our system, first because we reduce mass but also because we have a lot of more points to talk about in the...
  5. Arthur Beloso

    Master Cylinder Design

    Hello everyone. I’m part of a Baja team from Brazil and I am having some problems on the design of our new master cylinder. In the last prototype we used PTFE o’rings to seal the brake fluid. But the lifetime of the o’ring is way too low, like 4h in the maximum. I though in use some U-ring’s but...

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