[seespotendo]

saw this about a damper system that uses electromagnetic sensitive fluid to change the feeling of the suspension. could this be used in bike suspension one day?
I've seen one negative as being that a power source would be needed, right?

http://www.youtube.com/watch?v=<object width="560" height="340"><param name="movie" value="http://www.youtube.com/v/A2CIJL4XICo&hl=en_US&fs=1&"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/A2CIJL4XICo&hl=en_US&fs=1&" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="560" height="340"></embed></object>

thoughts?

 

[yuroshek]

so the default is set for aggressive driving... "sorry officer but my car's in aggressive mode, its suppose to be driven like this."

 

[TrueScotsman]

Sorry, IIRC, this has already been used on MTBs.
Back in the day Noleen used this on the Pro-Flex/K2 bikes.

 

[fluider]

I'd like to see that industry's top-most priority is getting rid of (still advocated) derailleurs. But that's not going to happen soon, is it ?

 

[RoboS]

What about Bose electromagnetic suspension

 

[Sandwich]

Sorry, IIRC, this has already been used on MTBs.
Back in the day Noleen used this on the Pro-Flex/K2 bikes.

not exactly. The noleen used a variable damper port with standard shock oil, iirc. The port could open and close based on shaft speed.

This stuff, at least with the GM parts and many others, use shock oil impregnated with iron particles and an electromagnet to thicken the oil when appropriate. Typically these systems use sensors on the suspension arms rather than shaft speed, but I could be wrong.

Definitely has potential, but huge detriments I see are weight of the fluid, the magnets, and the battery to power it. Vs. a standard shock, that could be a lot of weight.

 

[jonKranked]

Sorry, IIRC, this has already been used on MTBs.
Back in the day Noleen used this on the Pro-Flex/K2 bikes.

Actually, the Noleen shock you are referring to used a piezo-electric controlled valving system to (supposedly) adjust oil flow on the fly. Wasn't electromagnetic suspension fluid. Very similar concept, different executions.

http://www.neebu.net/~khuon/cycling/bikes/K2/1999-OzM/smartshock.html

 

[TrueScotsman]

My bad!

 

[IH8Rice]

Definitely has potential, but huge detriments I see are weight of the fluid, the magnets, and the battery to power it. Vs. a standard shock, that could be a lot of weight.

yup.
Rod Millen designed a system specifically desgined for off-road military use in the earlier part of the decade http://www.millenworks.com/html/suspension_systems.htm
http://www.physorg.com/news432.html
http://en.wikipedia.org/wiki/Magneto_rheological_suspension
all these types of system though require numerous support systems to work..mainly a electric source.

 

[w00dy]

That's a pretty interesting concept. I wonder how the fluid holds up. This seems like it would break down a lot faster than the average oil.

 

[IH8Rice]

That's a pretty interesting concept. I wonder how the fluid holds up. This seems like it would break down a lot faster than the average oil.

yeah it does. he showed how it worked on that show Rides...its basically fluid that has a significant amount of metal in it to make it work obviously.

 

[ChrisKring]

Progressive looked into it back around 2002 or so. At the time, it was too expensive.

Yes, it can be done. The challenge would be getting the weight and cost at a point where people will pay for it. I think if it could be made to work better than a shimmed damper with a reasonable weight that factory moto teams would be using it. Road vehicles have significantly different environments and vehicle dynamics.

being a bike nerd, it would be cool since it could be easily tuned.

 

[Victor]

Shock manufacturers are trying to remove liquids as part of the equation not introduce more of it, that putting aside the absolute need for electricity from somewhere into making the electromagnets work, also the load on the bike shocks is far less than on a automobile for example thus issues like these can be solved using air or other gases as fluids.

Btw, ferrari 599 gtb uses those kinda shocks from Delphi called "magneto-rheological" since 2006 on the production model

P.S. hello everyone

 

[illflip]

isnt this what the Cannondale Simon system is trying to do?

 

[IH8Rice]

Btw, ferrari 599 gtb uses those kinda shocks from Delphi called "magneto-rheological" since 2006 on the production model

and the Corvette was using it years before that too

isnt this what the Cannondale Simon system is trying to do?

the Simon is using a piezoelectric motor to actuate the valving

 

[jonKranked]

the Simon is using a piezoelectric motor to actuate the valving

so more like the noleen? any word/reviews as to whether or not they actually got it to work?

 

[rosenamedpoop]

What about Bose electromagnetic suspension

If that is not camera/editing trickery, I am really amazed by these Bose shocks. That car bunnyhopped... rad!






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