Aftermarket Magnetorheological Damping - How long?
#1
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After reading glowing reviews of how the MP4-12C rides over rough surfaces, yet remains taught enough on the race track, it got me wondering about the fancy dampers it uses and how long it'll be until similar technology filters to the aftermarket community.
Making a car better at the track has, for years, meant cars have been too stiff to enjoy on a backroad blast. I'm at the point where I no longer enjoy throwing my car down a B road anymore, which is a real shame.
So - how long until a realistically priced aftermarket Magnetorheological damper system will become available for popular cars? How much would you consider paying for such a system?
Making a car better at the track has, for years, meant cars have been too stiff to enjoy on a backroad blast. I'm at the point where I no longer enjoy throwing my car down a B road anymore, which is a real shame.
So - how long until a realistically priced aftermarket Magnetorheological damper system will become available for popular cars? How much would you consider paying for such a system?
#2
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After reading glowing reviews of how the MP4-12C rides over rough surfaces, yet remains taught enough on the race track, it got me wondering about the fancy dampers it uses and how long it'll be until similar technology filters to the aftermarket community.
Making a car better at the track has, for years, meant cars have been too stiff to enjoy on a backroad blast. I'm at the point where I no longer enjoy throwing my car down a B road anymore, which is a real shame.
So - how long until a realistically priced aftermarket Magnetorheological damper system will become available for popular cars? How much would you consider paying for such a system?
Making a car better at the track has, for years, meant cars have been too stiff to enjoy on a backroad blast. I'm at the point where I no longer enjoy throwing my car down a B road anymore, which is a real shame.
So - how long until a realistically priced aftermarket Magnetorheological damper system will become available for popular cars? How much would you consider paying for such a system?
#4
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I've no idea how effective (or how quick-acting) they are, however the electromechanical bits for dynamically adjustable conventional shocks already exist: http://www.tein.com/products/edfc.html
#5
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Commercial MR shocks have a response time on the order of of 10-50 ms, which is enough time to do "skyhook" damping algorithms. i.e. the damping force is proportional to the velocity of the body motions wrt a virtual inertial reference as opposed to the relative velocity between the wheel and the body. Therefore the dampers will resist body motions but not resist wheel motions (bumps and dips).
The tein adjusters probably don't have the cycle life / durability to be able to dynamically adjust up to several times per second. So a stepper motor on the **** plus a control box with accelerometers, won't cut it.
As for the OP - MR shocks are still expensive (for now) and I don't know if Delphi would license out the patents to any small aftermarket company. The next complication is the software to provide optimal damping. The expertise probably doesn't exist outside of OEs, for now. Even if it did, the tuning is probably vehicle specific, and someone would have to figure out how to write a program and a manual for a user to tune it.
One parallel is the use of traction control. A well set up one will make a driver faster, and one company makes one - Racelogic. AFAIK only a handful of miatas have them. Why not? ..
The tein adjusters probably don't have the cycle life / durability to be able to dynamically adjust up to several times per second. So a stepper motor on the **** plus a control box with accelerometers, won't cut it.
As for the OP - MR shocks are still expensive (for now) and I don't know if Delphi would license out the patents to any small aftermarket company. The next complication is the software to provide optimal damping. The expertise probably doesn't exist outside of OEs, for now. Even if it did, the tuning is probably vehicle specific, and someone would have to figure out how to write a program and a manual for a user to tune it.
One parallel is the use of traction control. A well set up one will make a driver faster, and one company makes one - Racelogic. AFAIK only a handful of miatas have them. Why not? ..
#6
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BTW Koni's FSD is pretty cool. It starts out initially soft, and gets firmer after the shaft has kept moving for a certain amount of time. So rapid events (bumps), see soft damping, but driver inputs (roll etc), see firmer damping. A normal shock only presents a force that is solely a function of shaft speed.
The TireRack test of FSD shows better ride *and* handling than BMW factory and Koni yellow.
The TireRack test of FSD shows better ride *and* handling than BMW factory and Koni yellow.
#8
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I wonder if we'll see either show up in an NA/NB fitment.
It certainly seems as though the DampMatic valve assembly and shaft could, in principle, be retrofitted into a conventional monotube shock body.
It certainly seems as though the DampMatic valve assembly and shaft could, in principle, be retrofitted into a conventional monotube shock body.
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