KYB builds the DRC system?
02-08-2009, 03:50 PM
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KYB builds the DRC system?
personally, I think the system is conceptually flawed...not a manufacturing issue, but a design issue...
it's a hydraulic system, with high pressures, even when static...
all hydraulic systems leak, not such thing as a perfect seal...
look at any Cat with hydraulic rams...oil everywhere...
but they 'fixed' the probelm....how?
they have a fluid resevoir and a pump as the motive force...so if pressure/fluid is leaked, the pump just takes more fuil and maintains pressure...
our system is charged once, and if it leaks, it's kaput...
I'm convinced they all have failed to some degree, or will in time...
hope they come up with a fix...<ul><li><a href="http://www.kyb.ru/en/kyb_corp/press-center/detail.php?ID=2097">http://www.kyb.ru/en/kyb_corp/press-center/detail.php?ID=2097</a</li></ul>
it's a hydraulic system, with high pressures, even when static...
all hydraulic systems leak, not such thing as a perfect seal...
look at any Cat with hydraulic rams...oil everywhere...
but they 'fixed' the probelm....how?
they have a fluid resevoir and a pump as the motive force...so if pressure/fluid is leaked, the pump just takes more fuil and maintains pressure...
our system is charged once, and if it leaks, it's kaput...
I'm convinced they all have failed to some degree, or will in time...
hope they come up with a fix...<ul><li><a href="http://www.kyb.ru/en/kyb_corp/press-center/detail.php?ID=2097">http://www.kyb.ru/en/kyb_corp/press-center/detail.php?ID=2097</a</li></ul>
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02-09-2009, 05:00 AM
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All shocks (gas charged) have this design. They don't fail as easily at the sliding seal
I posted before...it's not the DRC valves, it's the shock seals, which all cars have, and are under hydraulic pressure 24/7.
Why are these seals failing?
Why are these seals failing?
02-09-2009, 01:23 PM
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true, but there are significant differences...
they transfer pressure from one corner to another...
under static load 1600 psi/corner
dynamic maybe 2200 and 1000, for example...
a normal shock is a sealed system...and overall pressure is constant...although it is higher in the section being compressed the other section is lower, and the gas or fluid is transferred thru a divider oriface, which disapates the energy via pressure drop (and gas temp rise), the size of orifice ~ to shock stiffness...
and gas is compressible, fluid is not...
I could see these working under a nice steady state type system, but not one with rapid changes and impulses...you will have major forces, and something will give...in this case the seals...
under static load 1600 psi/corner
dynamic maybe 2200 and 1000, for example...
a normal shock is a sealed system...and overall pressure is constant...although it is higher in the section being compressed the other section is lower, and the gas or fluid is transferred thru a divider oriface, which disapates the energy via pressure drop (and gas temp rise), the size of orifice ~ to shock stiffness...
and gas is compressible, fluid is not...
I could see these working under a nice steady state type system, but not one with rapid changes and impulses...you will have major forces, and something will give...in this case the seals...
