Nismo Z mass dampers?
11-17-2008, 02:31 PM
#107
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For those who are interested in the solid bars, understand that they do not serve the same purpose as the mass dampers. It's merely additional weight.
I can't speak for the Yamaha unit, but a mass damper or inerter is used for tuning mechanical grip by minimizing rapid load variation in the tire contact patch by acting as a mechanical capacitor (storage) of inertia (kinetic energy) from the suspension's mass that's transmitted through the chassis in frequencies (vibrations).
Anyone following F1 would've heard of a very advanced version of this technology in the Renault spying case last year
The damper has to be in tune with the suspension's natural frequencies to avoid cycling and stress to the system itself (the engineers at Nissan would've done that for the Nismo Z's suspension, but most likely without regard for your aftermarket coil-overs
), some believe this was the cause for Masa's suspension failure at Monza last year.
DerekW
I can't speak for the Yamaha unit, but a mass damper or inerter is used for tuning mechanical grip by minimizing rapid load variation in the tire contact patch by acting as a mechanical capacitor (storage) of inertia (kinetic energy) from the suspension's mass that's transmitted through the chassis in frequencies (vibrations).
Anyone following F1 would've heard of a very advanced version of this technology in the Renault spying case last year
The damper has to be in tune with the suspension's natural frequencies to avoid cycling and stress to the system itself (the engineers at Nissan would've done that for the Nismo Z's suspension, but most likely without regard for your aftermarket coil-overs
), some believe this was the cause for Masa's suspension failure at Monza last year.DerekW
11-17-2008, 02:36 PM
#108
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yep - the J Damper
http://www.forumula1.net/forum/viewt...hp?f=12&t=3345
there is a very good article in this months (or last months?) Race Car Engineering about it. Edit, couple months old, sorry
http://www.racecar-engineering.com/a...ally-work.html
these are far more sophisticated than the mass dampers are, but cool stuff to read about nevertheless
obviously I can't comment on how they perform with other suspensions, as my car just has the 1 setup. But they play very nicely with my HKS RS coilovers, and totally changed the nose behaviour for the better
http://www.forumula1.net/forum/viewt...hp?f=12&t=3345
there is a very good article in this months (or last months?) Race Car Engineering about it. Edit, couple months old, sorry
http://www.racecar-engineering.com/a...ally-work.html
these are far more sophisticated than the mass dampers are, but cool stuff to read about nevertheless
obviously I can't comment on how they perform with other suspensions, as my car just has the 1 setup. But they play very nicely with my HKS RS coilovers, and totally changed the nose behaviour for the better
Last edited by Z1 Performance; 11-17-2008 at 02:41 PM.
11-17-2008, 03:15 PM
#109
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J-damper is McLaren's code name for their mass damper, we can call it what it is, no one is spying for Renault on this forum
It is apparent that we have some similar magazine subscriptions, but some of my information came from other sources
I'm not here to downplay on other people's setup, the information felt useful enough for me to share it with other drivers who might find (edit) it interesting. I'm glad that your suspension setup improved with the mass dampers and the HKS coil-overs, but what I wrote regarding tuning the suspension with the damper mostly applies in critical conditions; as in prolonged track use where the upper physical limitations of the damping system is reached.
In any case, the Nismo mass damper is designed with the Nismo Z suspension in mind. Please don't take this personally, I quite like your car actually
Derek
It is apparent that we have some similar magazine subscriptions, but some of my information came from other sourcesI'm not here to downplay on other people's setup, the information felt useful enough for me to share it with other drivers who might find (edit) it interesting. I'm glad that your suspension setup improved with the mass dampers and the HKS coil-overs, but what I wrote regarding tuning the suspension with the damper mostly applies in critical conditions; as in prolonged track use where the upper physical limitations of the damping system is reached.
In any case, the Nismo mass damper is designed with the Nismo Z suspension in mind. Please don't take this personally, I quite like your car actually
Derek
11-17-2008, 03:48 PM
#110
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no worries I just tried them because I knew the feedback my Subaru customers had provided us with these dampers on their car and I was eager to see if was as noticeable a difference on the Z. I was extremely pleased with them, so they stayed on the car
I just tried them because I knew the feedback my Subaru customers had provided us with these dampers on their car and I was eager to see if was as noticeable a difference on the Z. I was extremely pleased with them, so they stayed on the car
01-01-2010, 07:15 AM
#112
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there are several posts here with people's impressions
they are not popular because of their cost, and I guess people don't 'think' they would do much. If the car has coilovers with linear rate springs, they make an immediate, noticeable difference. I have not tried them in combination with any progressively sprung coilovers yet (KW, Bilstein, etc)
they are not popular because of their cost, and I guess people don't 'think' they would do much. If the car has coilovers with linear rate springs, they make an immediate, noticeable difference. I have not tried them in combination with any progressively sprung coilovers yet (KW, Bilstein, etc)
12-28-2010, 05:31 PM
#114
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In case anybody might still be interested in these. I have a set for sale with all the brackets and bolts.
https://my350z.com/forum/suspension/...ml#post8860997
https://my350z.com/forum/suspension/...ml#post8860997
01-11-2011, 11:46 AM
#115
Hate to revive an old thread but does anyone have pictures of the rear damper and could anyone possibly measure the distance between the mounting holes on the bracket for the rear damper. I know the front one will fit a G , but I'm trying to see if the rear one might fit as well (doubt it)
01-20-2011, 06:48 PM
#116
For future reference if anyone comes across this, the rear damper DOES fit a G35 coupe, the bolts line up perfectly with existing holes. Seemed to make the rear end feel a tiny bit smoother around some turns, but can't properly review since I'm on winter tires...I'll withhold judgment for now.
08-13-2011, 05:26 AM
#117
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For future reference if anyone comes across this, the rear damper DOES fit a G35 coupe, the bolts line up perfectly with existing holes. Seemed to make the rear end feel a tiny bit smoother around some turns, but can't properly review since I'm on winter tires...I'll withhold judgment for now.
What year G, and can you take a pic or two? If no pics, where exactly are you talking about?
Also, did you manage to see if the front damper fits on a G?
08-14-2011, 10:52 AM
#118
I think I may have taken pics, I just need to find them. The damper mounts on the divider that's about a foot forward of the spare tire and at about the same height. The divider separates the spare tire well and the rear seat compartment. Its the bottom portion of the large opening behind the rear seats. There are holes pre-drilled and everything fits perfect although its a bit of a pain to get in there and bolt up.
The front damper fits as there have been other people that installed it so I know it bolts up, but I don't have it so I haven't attempted to install it myself.
