Penske regressive valving - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

7thgear · 09-22-2015, 12:57 PM

what makes this technology only available in high end products, what are the component complexities and costs that prohibit this being used universally?

RBbugBITme · 09-22-2015, 01:06 PM

Nothing but money. It'll fit on pretty much any Penske shock.

http://shop.penskeshocks.com/PENSKE-...ALVE-ASSEMBLY/

cdrazic93 · 09-22-2015, 01:28 PM

I bet half the parts alone for a penske shock could pay for some Teins.

fika84 · 09-22-2015, 01:35 PM

Quote:

Originally Posted by cdrazic93

I bet half the parts alone for a penske shock could pay for some Teins.

Raceseng has the Penske shock prices starting at $7K...

http://www.raceseng.com/penske-shock...ubaru-brz-2013

7thgear · 09-22-2015, 03:02 PM

Quote:

Originally Posted by RBbugBITme

Nothing but money. It'll fit on pretty much any Penske shock.

http://shop.penskeshocks.com/PENSKE-...ALVE-ASSEMBLY/

is that mostly R&D cost?

If demand was much higher (say, OEM) would the cost go down significantly?

RBbugBITme · 09-22-2015, 03:13 PM

Not R&D, just quantity limits. OEMs would not be paying anywhere near that much.

cdrazic93 · 09-22-2015, 09:12 PM

Quote:

Originally Posted by fika84

Raceseng has the Penske shock prices starting at $7K...

http://www.raceseng.com/penske-shock...ubaru-brz-2013

Just about the same as two sets of SRCs

drewbot · 09-22-2015, 11:00 PM

Quote:

Originally Posted by cdrazic93

Just about the same as two sets of SRCs

Did you see it can rise to $12k!!!!

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Captain Snooze · 09-23-2015, 01:40 AM

Given the exchange rate atm the double adjustables without springs would end up costing approximately AUD18k with import taxes. Yeah, I guess I'm passing on these

ajc209 · 09-23-2015, 04:50 AM

Oh looorrrrd wont you buy me a 2way-set-of-penzkes? my friends all have Ohlins-DFV, I must make amenze......

bfrank1972 · 09-23-2015, 08:45 AM

I just have to wonder, with all these complex (and expensive) valve designs, when aftermarket computer controlled/magnetic dampers are really going to hit their stride. Like these people: http://www.magneshocks.com/roadracing.htm

Program any curve you want, have selectable curves based on terrain. Heck have a Nurburgring setting that knows via gps when you're about to hit the carousel and adapts accordingly. I have to think it will eventually obsolete designs discussed in this thread.

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RBbugBITme · 09-23-2015, 08:52 AM

For the performance aftermarket, not likely going to happen. Magnetorheological dampers are literally the worst thing you could do for a performance damper. Its the fluid equivalent of sand paper, we developed the first set for McLaren over a decade ago and they couldn't match curves before and after a test due to wear of everything internal.

bfrank1972 · 09-23-2015, 08:57 AM

Quote:

Originally Posted by RBbugBITme

For the performance aftermarket, not likely going to happen. Magnetorheological dampers are literally the worst thing you could do for a performance damper. Its the fluid equivalent of sand paper, we developed the first set for McLaren over a decade ago and they couldn't match curves before and after a test due to wear of everything internal.

Ahh interesting. Do you know how the factory magnetic setups (like GM) are getting around this longevity problem?

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RBbugBITme · 09-23-2015, 09:00 AM

Other than starting with looser tolerances to hide it and minimal damping rates, they're not.

09-22-2015, 12:57 PM	#15
7thgear i'm sorry, what? Join Date: Jan 2012 Drives: Canada Location: I rock a beat harder than you can beat it with rocks Posts: 4,399 Thanks: 357 Thanked 2,506 Times in 1,268 Posts Mentioned: 40 Post(s) Tagged: 3 Thread(s)	what makes this technology only available in high end products, what are the component complexities and costs that prohibit this being used universally? __________________ don't you think if I was wrong, I'd know it?

09-22-2015, 01:06 PM	#16
RBbugBITme Senior Member Join Date: Jun 2014 Drives: S60R/Corvette Location: Reading, PA Posts: 104 Thanks: 4 Thanked 236 Times in 59 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	Nothing but money. It'll fit on pretty much any Penske shock. http://shop.penskeshocks.com/PENSKE-...ALVE-ASSEMBLY/ __________________ Ryan M. Strange Engineering Director of Suspension Development

09-22-2015, 01:28 PM	#17
cdrazic93 Junior Join Date: Aug 2013 Drives: a car Location: Probably at school Posts: 4,341 Thanks: 3,184 Thanked 2,512 Times in 1,502 Posts Mentioned: 20 Post(s) Tagged: 0 Thread(s)	I bet half the parts alone for a penske shock could pay for some Teins. __________________ "Ah! What music! They could have never imagined, those pioneers who invented the automobile, that it would posses us like this, our imaginations, our dreams. Men love women, but even more than that, men love CARS!"-Lord Hesketh

09-22-2015, 03:13 PM	#20
RBbugBITme Senior Member Join Date: Jun 2014 Drives: S60R/Corvette Location: Reading, PA Posts: 104 Thanks: 4 Thanked 236 Times in 59 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	Not R&D, just quantity limits. OEMs would not be paying anywhere near that much. __________________ Ryan M. Strange Engineering Director of Suspension Development

09-23-2015, 01:40 AM	#23
Captain Snooze Because compromise ® Join Date: Jan 2012 Drives: Red Herring Location: australia Posts: 7,736 Thanks: 3,999 Thanked 9,376 Times in 4,136 Posts Mentioned: 60 Post(s) Tagged: 0 Thread(s)	Given the exchange rate atm the double adjustables without springs would end up costing approximately AUD18k with import taxes. Yeah, I guess I'm passing on these __________________ My car is completely stock except for all the mods.

09-23-2015, 04:50 AM	#24
ajc209 Senior Member Join Date: Dec 2011 Drives: GT86 Cosworth Location: UK Posts: 753 Thanks: 361 Thanked 270 Times in 188 Posts Mentioned: 9 Post(s) Tagged: 1 Thread(s)	Oh looorrrrd wont you buy me a 2way-set-of-penzkes? my friends all have Ohlins-DFV, I must make amenze......

09-23-2015, 08:45 AM	#25
bfrank1972 Senior Member Join Date: Jul 2013 Drives: 2013 FR-S Argento Location: Westport,CT Posts: 1,855 Thanks: 517 Thanked 1,039 Times in 616 Posts Mentioned: 7 Post(s) Tagged: 1 Thread(s)	I just have to wonder, with all these complex (and expensive) valve designs, when aftermarket computer controlled/magnetic dampers are really going to hit their stride. Like these people: http://www.magneshocks.com/roadracing.htm Program any curve you want, have selectable curves based on terrain. Heck have a Nurburgring setting that knows via gps when you're about to hit the carousel and adapts accordingly. I have to think it will eventually obsolete designs discussed in this thread. Sent from my iPhone using Tapatalk

09-23-2015, 08:52 AM	#26
RBbugBITme Senior Member Join Date: Jun 2014 Drives: S60R/Corvette Location: Reading, PA Posts: 104 Thanks: 4 Thanked 236 Times in 59 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	For the performance aftermarket, not likely going to happen. Magnetorheological dampers are literally the worst thing you could do for a performance damper. Its the fluid equivalent of sand paper, we developed the first set for McLaren over a decade ago and they couldn't match curves before and after a test due to wear of everything internal. __________________ Ryan M. Strange Engineering Director of Suspension Development

09-23-2015, 09:00 AM	#28
RBbugBITme Senior Member Join Date: Jun 2014 Drives: S60R/Corvette Location: Reading, PA Posts: 104 Thanks: 4 Thanked 236 Times in 59 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	Other than starting with looser tolerances to hide it and minimal damping rates, they're not. __________________ Ryan M. Strange Engineering Director of Suspension Development

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