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Suspension | Chassis | Brakes -- Sponsored by 949 Racing Relating to suspension, chassis, and brakes. Sponsored by 949 Racing.

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Old 09-15-2014, 01:18 AM   #43
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Not the shocks just the controller, the early ones pre 2008 didn't do anything but set the shock to soft and hard. We have retrofit controllers plug and play that use brake pres, G lat G lng tps streering and a few others to actively remap it in about 30msec this is what I added to my FR-S as a test car. Rides like a Camry handles like a Porsche just needs mo power.
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Wow...are these the prototype damptronic bilsteins that was posted a while back? Sounds amazing. Can't wait to hear more about it when it releases. Though I bet it wont be cheap.

Besides the PASM system on it...Who's doing the hardware parts components on this system? Bilstein?

What are your thoughts on the new Spool Valve system on the new 2015 Camaro Z28? That too sound very progressive, futuristic and amazing. Idk exactly how it works, except from the videos I've seen on it...but it kinda sounds like Ohlins' unique piston valve design, where there are different sized ports in the piston and valves that open and close during different shaft speeds (for ultra digressive performance)..I could be wrong though...

Is the Spool Valve/DSSV (on the Z28) pretty much similar to the piston concept of the Ohlins (like the R&T Ohlins and all their other dampers)?
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Old 09-15-2014, 01:33 AM   #44
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Interestingly the GT86 was the warmup/evaluation car they used on a Porsche experience day (high praise if you ask me). I didn’t get a huge amount of time in the Toyota, just 2 laps of the tightish multi-surface track to make sure I was safe enough to let out in the expensive cars. They said the suspension was stock but the car was rolling on 225/45R17 & 255/40R17 PS2 (all the cars were on Michelin tyres). The other thing was I stepped out of the Toyota straight into their Cayman S (PASM equipped)

On the smooth surface sections the Twin was really good, felt absolutely planted & was very adjustable. Very close to the Cayman in terms of grip & handling ability, I think the Cayman was on PSS not PS2! However on the sections of the track with rough or uneven surfaces I was left with the GT86 skipping off the top of lumps & bumps. On those surfaces the Cayman absolutely destroyed the GT86 due to its composure, the Porsche was also a lot more comfortable in the cabin.

This tells me that fundamentally the Twins are 90% there in terms of a Cayman equivalent chassis but the suspension is lacking in the spring/damping balance compared to a PASM chassis. From what I’ve read the problem lays in the damping being too strong & not letting the wheel move fast enough. So the first order of business with the car is to sort the damping/ spring synergy out which means you do one of two things
1) Get slower/weaker dampers to allow for faster wheel movement.
2) Get stronger springs to allow for faster rebound reaction.

While it maybe cheaper to ‘fix’ the spring weight to get the better movement I think a PASM Cayman will ace a stiffer Twin on UK back roads. So you’re looking at the more expensive route of sorting the damping. Normally I’d head for Bilstein B4 dampers, but it doesn’t seem they exist for the Twins so maybe the B6 dampers.
You've got the right idea, but try playing with some 2 way dampers, and you'll know exactly how you want it done
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Old 09-15-2014, 01:35 AM   #45
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His point was that analog dampers are old tech and active dampers are top tech, and, he is right; pure analog can't outperform a good active damper.

Porsche GT3 is available only with PASM. Their high performance street cars are not very analog...
FTFY

Porsche has a whole different line of track cars not marketed to the masses, the way the GT3 is.
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Old 09-15-2014, 04:03 AM   #46
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You've got the right idea, but try playing with some 2 way dampers, and you'll know exactly how you want it done
*cough* JRZ RS *cough*
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Old 09-15-2014, 07:25 AM   #47
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*cough* JRZ RS *cough*
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Old 09-15-2014, 10:23 AM   #48
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FTFY

Porsche has a whole different line of track cars not marketed to the masses, the way the GT3 is.
Yea, he has 2 of those for the IMSA GT3 cup, he is heading to Austin to race this week, they are coil over spec cars where changing the toe 0.030 can loose you the race, amazing cars. I guess if you put the same 200k into a Scion it would handle and drive like a Porsche.
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Old 09-15-2014, 10:35 AM   #49
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"So you want to make your twin drive like a Cayman? It would be cheaper to buy a Cayman..."
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Old 09-15-2014, 10:53 AM   #50
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"So you want to make your twin drive like a Cayman? It would be cheaper to buy a Cayman..."
Why replicate the real deal, if you can just buy the real deal :p
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Old 09-15-2014, 10:57 AM   #51
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Why replicate the real deal, if you can just buy the real deal :p
My thoughts exactly
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Old 09-15-2014, 12:07 PM   #52
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Because we can! This has fueled the aftermarket for years.
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Old 09-15-2014, 12:10 PM   #53
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Why replicate the real deal, if you can just buy the real deal :p
Show me a Cayman that I can get two bikes in the back ... but anyway as far as I'm concerned a Cayman is a wannabe anyway.
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Old 09-15-2014, 12:27 PM   #54
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A Cayman is a WAY better starting platform than a 911. If Porsche could give it 911 level suspension and engine output it would destroy 911 sales.

I love 911's, but from a physics standpoint a Cayman is far superior.
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Old 09-15-2014, 12:32 PM   #55
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Show me a Cayman that I can get two bikes in the back ... but anyway as far as I'm concerned a Cayman is a wannabe anyway.
911 & FR-S/BRZ are much better at carrying kids around than the Cayman
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Old 09-15-2014, 12:38 PM   #56
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A Cayman is a WAY better starting platform than a 911. If Porsche could give it 911 level suspension and engine output it would destroy 911 sales.

I love 911's, but from a physics standpoint a Cayman is far superior.
I wasn’t thinking of the 911, I was thinking of something altogether smaller & much lighter.. oh and build in the UK

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911 & FR-S/BRZ are much better at carrying kids around than the Cayman
Forget the kids, it's the bikes!
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