can someone please explain the suspension on the Q45a's to me please

Post by **JCsQ45** » Fri Jul 01, 2005 10:40 am

i've been hearing a lot about the suspension on the Q45a's and it seems to be pretty interesting. all i really know though is that its been used in race applications and that its supposed to be really good. that's all i really know though. can someone explain it to me please?

Post by **elwesso** » Fri Jul 01, 2005 11:08 am

Id try a search to go in depth.. however its kind of a combination hydraulic/pneumatic suspenion.

There are 4 hydraulically controlled shocks, and 9 nitrogen filled accumulators. The shocks add like regular shocks, to absorb big bumps and swells and to keep the body level, the accumulators act like the springs, to make the ride buttery smooth.....

Post by **maxnix** » Fri Jul 01, 2005 6:15 pm

Look at the FSM? It's not real simple. And it is actually a semi-active as there are springs for higher frequencies.

Reading Previous posts found by searching under the word "active" in the body of the posts will reveal much.

Welcome to an incredible treasure trove of knowledge.

Post by **GreenQ45a** » Fri Jul 01, 2005 8:38 pm

JCsQ45 wrote:i've been hearing a lot about the suspension on the Q45a's and it seems to be pretty interesting. all i really know though is that its been used in race applications and that its supposed to be really good. that's all i really know though. can someone explain it to me please?

RedmanFX did some great write up info about the Active Q45 there the best by far (NOT Including Texasoil's)

Do a search on "Active suspension" and created by "RedmanFX' search "infiniti general" look in previous posts ... you should find a TON of info anything written by Texasoil is GOLD...

Post by **JCsQ45** » Fri Jul 01, 2005 9:15 pm

thanks a bunch guys, i appreciate your help.

Post by **elwesso** » Sat Jul 02, 2005 9:47 am

actually the springs are used primarily just to hold the weight of the car..

Post by **350zQ45a** » Sat Jul 02, 2005 11:18 am

Correct.

It's still only a semi active system, it can only lower the wheel and not raise it.

Same with the ABC system from Merc, which I noticed isn't on any of their newer cars. Another bad run with "active" technology.

Post by **elwesso** » Sat Jul 02, 2005 5:01 pm

350zQ45a wrote:Correct.

It's still only a semi active system, it can only lower the wheel and not raise it.

Same with the ABC system from Merc, which I noticed isn't on any of their newer cars. Another bad run with "active" technology.

Other way around, it can only raise it, not lower it.....

Instead of supporting weight and providing the handling characteristics, it just does the latter where the springs hold the cars weight. This alone compromises little and still allows for a "mostly" active system!

I wouldnt want it anymore active because that would mean it would be more expensive to repair!

Post by **350zQ45a** » Sat Jul 02, 2005 5:16 pm

Post by **GreenQ45a** » Sat Jul 02, 2005 6:14 pm

The car WILL lower and it WILL raise!!!!

The only reason it's not "Full - Active" because it cannot Pull the struts back can only push!!

The car uses gravity to instead of a reversing hydrolic actuator to to pull back the strut and lower the cars height...

Its only real drawback is if all tires leave the ground the car releases all pressure and the car will bottom out.

Post by **redmanfx** » Sat Jul 02, 2005 6:35 pm

You've got mail.

red

Post by **350zQ45a** » Sun Jul 03, 2005 9:23 am

http://www.tonyfoale.com/Artic...g.htm

Post by **350zQ45a** » Sun Jul 03, 2005 9:26 am

The Lotus SID.

http://www.lotusespritworld.co....html

Post by **GreenQ45a** » Sun Jul 03, 2005 9:46 am

Perhaps the people with half a million at their disposal would never consider buying anything as commonplace as a Lotus, but if any one of them could persuade the Norwhich-based car maker to part with the "one and only SID" -

Thats awsome only issue is no failsafe suspension system..The Q45a uses the springs to support the Q while parked also as a backup failsafe suspension..

If the Q45a can't maintain pressure then the springs support the cars weight...

I would love to have that LOTUS though.

Too bad theres only ONE.

Post by **350zQ45a** » Sun Jul 03, 2005 10:27 am

That lotus is also 11 years old, imagine the advancements that have occured, or could occur.

Supposedly Lotus is assisting in chasis and suspension tuning on the next GTR, should be very exciting to hear what they have helped on.

Next GTR will be one, if not the most technologically sophisticated car on the road irregardless of price.

Can't wait

Post by **AZhitman** » Sun Jul 03, 2005 11:03 am

Ryan can explain WHY better than I can, but people really need to comprehend JUST HOW GOOD and ahead of its time the actsus system IS and WAS.

No one (yet) has developed an equivalent system (with the exception of MAYBE Mercedes, and that's debateable).

Amir Bose's system, which has been in development for nearly a decade, may approximate what Infiniti did a decade ago.

Post by **elwesso** » Sun Jul 03, 2005 1:18 pm

AZhitman wrote:Ryan can explain WHY better than I can, but people really need to comprehend JUST HOW GOOD and ahead of its time the actsus system IS and WAS.

No one (yet) has developed an equivalent system (with the exception of MAYBE Mercedes, and that's debateable).

Amir Bose's system, which has been in development for nearly a decade, may approximate what Infiniti did a decade ago.

And certainly no one has made one thats as cheap to maintain!!!!!!

Post by **350zQ45a** » Sun Jul 03, 2005 3:00 pm

Ironic isn't it, that MERC had their system when Infiniti did, yet sacked it due to poor reliability and poor MPG.

So roughly 10 years after Infiniti launched theirs, Merc introduces the same thing just offering advacement in CPU processing and overall speed, yet it is as unreliable as it probably was a decade ago.

I never read anything but praise for MERC's system, yet I see it on none of their new vehicles, instead they appear to be using an active damping system or something toned down.

Post by **GreenQ45a** » Sun Jul 03, 2005 3:39 pm

theres a thing called a patend merc ABC system couldn't be put in to production in the US cars... same with LEXUS Soarer (CS400 non-US)

After the 10 year patend had ended they saw what happend to the Q45a and what americans do to cars and how no one will buy them.

5% US sales were Active 93% JP sales were Active

LEXUS said F**K that...

I buy the Merc active ZH fluid for my Active Q

Post by **350zQ45a** » Sun Jul 03, 2005 6:25 pm

The Merc ABS system was put on the new SL class cars starting in the new millenium, but it hasn't been introduced on any models.

They have had breakdowns and the car going berzerker, not what you want when you shell out 90k+ for a lux-o roadster.

Toyota knew we were worthless americans, so we never got their system.

Post by **elwesso** » Mon Jul 04, 2005 4:16 am

350zQ45a wrote:The Merc ABS system was put on the new SL class cars starting in the new millenium, but it hasn't been introduced on any models.

They have had breakdowns and the car going berzerker, not what you want when you shell out 90k+ for a lux-o roadster.

Toyota knew we were worthless americans, so we never got their system.

Unfortunately I think thats true. Americans want cars that are reliable and start complaining if it costs money to maintain or fix.

The bottom line is only a small percentage would apprecaiate any active system in a car....

Post by **GreenQ45a** » Sun Jul 10, 2005 11:17 am

elwesso wrote:
Unfortunately I think thats true. Americans want cars that are reliable and start complaining if it costs money to maintain or fix.

The bottom line is only a small percentage would apprecaiate any active system in a car....

Who are you calling a "small percentage"? Is it because my last name is Sandoval?

Just kidding...

Nissan and To-yoda both applied for the patend at the same time but Nissan won because the HG50 (active Q45) was made 1st...

To-yoda Soarer is a great car I would get one in a heartbeat...

However, you can't bring them into the states unless they pass the DOT crash test.

You would need to crash THREE of them. Same with the Nissan President:eek:

Thats a sin in itself.

can someone please explain the suspension on the Q45a's to me please

can someone please explain the suspension on the Q45a's to me please

Re: can someone please explain the suspension on the Q4 ... (JCsQ45)

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