Bilstein Damptronic pics. - Page 5 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

DougW · 08-20-2013, 08:59 PM

Yes, if you are a track only car then higher spring rates would be required based on the tire grip patch. Your tire is a spring with a breakaway rate based on the contact patch so the spring rate has to match the tire. The shock can change the speed at which the rate is increased before the break away occurs. I guess that's a long way of saying the more grip the more spring/damping needed. Spiderman cape extra not batman, sticky not slippery.
DougW

InvalidJohnny5 · 08-20-2013, 09:04 PM

I think I found what I want...

Dezoris · 08-21-2013, 12:02 AM

While I appreciate this and see great benefit in it...
Personally I would not another electronic variable. The concept of re flashing my shocks on a car with a mostly sloppy stamped steel suspension seems over kill.

Looking forward to seeing how useful this is however.

Quote:

Yo bruh had some right front shock hesitation on that lap gotta pit in a reflash my Visconti damping rates. But have to open a ticket first.

DougW · 08-21-2013, 10:07 AM

I hear you, it's the same efi/carb argument both work in a given window just as well. I wonder what this chassis looks like on a 7 post shaker, maybe I'll call in some favors?
DougW

CSG Mike · 08-21-2013, 11:36 AM

Now if the spring rate could also be variable...

DougW · 08-21-2013, 12:52 PM

Need an upper/lower a arm suspension for that and use a blade spring with 0.250 of total travel, now you are talking about 1500-2000lb springs and high volume shock valving. Not this week.
DougW

mad_sb · 08-21-2013, 01:14 PM

Quote:

Originally Posted by DougW

.... I configured mine to use the Snow/Sport switch since it is an auto, the manual will use a mounted switch next to the cigarette lighter plug in the console, ideas?
Thanks
DougW

Or give us an option to use the currently useless vsc sport button

DougW · 08-21-2013, 05:33 PM

currently useless vsc sport button

So what's wrong with the vsc button?
DougW

Calum · 08-21-2013, 08:11 PM

Quote:

Originally Posted by DougW

currently useless vsc sport button

So what's wrong with the vsc button?
DougW

I have no idea what it does. Honestly, I've tried it once or twice, now I just turn off the traction control all together and be done with it. If you wanted to re-purpose that button I highly doubt anyone buying this system would care.

DougW · 08-21-2013, 08:39 PM

The VSC applies the brakes based on how out of control you are in yaw. It did a good job last winter when I was driving back from Charlotte during an ice storm. Several times I was crossed up and it pulled it back in line, I was playing with it on and off just to see what it does, finally the little picture hung me a bird and hid under the speedo until I got home. Ha Ha but it does work. Maybe include the snow switch for the manuals, don't know the cost.
DougW

Calum · 08-21-2013, 09:07 PM

Quote:

Originally Posted by DougW

The VSC applies the brakes based on how out of control you are in yaw. It did a good job last winter when I was driving back from Charlotte during an ice storm. Several times I was crossed up and it pulled it back in line, I was playing with it on and off just to see what it does, finally the little picture hung me a bird and hid under the speedo until I got home. Ha Ha but it does work. Maybe include the snow switch for the manuals, don't know the cost.
DougW

Ah, ok. I store mine for the winter.

xwd · 08-21-2013, 10:16 PM

Seems pretty cool and they aren't super expensive.

Just for giggles I contacted a local company, Magneshock who makes Magneto-Rheological shocks. Right now they only have the ability to pre-program compression/rebound curves, although the controller can store 2500 different profiles, but they said race teams have built their own realtime controller for them. Not cheap though. >$10K.

DougW · 08-22-2013, 08:38 AM

Yea, I've known those guys for 30 years he got screwed out of the MR patent thanks to a military contract. I used to have a business on Buford highway in the 70s/80s before I moved to the SC mountains. MR fluid is neat stuff but is expensive and abrasive, the new Corvette is going to the Bilstein Damptronics both because of cost and warranty issues. With MR you can build the valve stack in software by just using an orifice but at $750 a pint just can't do it for the street market. Illegal in most pro racing.
DougW

smbstyle · 08-22-2013, 05:25 PM

I'll be available for Road Atlanta and Barber testing!

Or come on down to Sebring and REALLY see how these things hold up....

08-20-2013, 09:04 PM	#58
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08-20-2013, 08:59 PM	#57
DougW Senior Member Join Date: May 2013 Drives: FR-S stock for now Location: SC Posts: 160 Thanks: 3 Thanked 171 Times in 81 Posts Mentioned: 10 Post(s)	Yes, if you are a track only car then higher spring rates would be required based on the tire grip patch. Your tire is a spring with a breakaway rate based on the contact patch so the spring rate has to match the tire. The shock can change the speed at which the rate is increased before the break away occurs. I guess that's a long way of saying the more grip the more spring/damping needed. Spiderman cape extra not batman, sticky not slippery. DougW

08-21-2013, 10:07 AM	#60
DougW Senior Member Join Date: May 2013 Drives: FR-S stock for now Location: SC Posts: 160 Thanks: 3 Thanked 171 Times in 81 Posts Mentioned: 10 Post(s)	I hear you, it's the same efi/carb argument both work in a given window just as well. I wonder what this chassis looks like on a 7 post shaker, maybe I'll call in some favors? DougW

08-21-2013, 11:36 AM	#61
CSG Mike Join Date: Jul 2012 Drives: S2000 CR Location: Orange County Posts: 14,564 Thanks: 8,942 Thanked 14,214 Times in 6,856 Posts Mentioned: 970 Post(s)	Now if the spring rate could also be variable...

08-21-2013, 12:52 PM	#62
DougW Senior Member Join Date: May 2013 Drives: FR-S stock for now Location: SC Posts: 160 Thanks: 3 Thanked 171 Times in 81 Posts Mentioned: 10 Post(s)	Need an upper/lower a arm suspension for that and use a blade spring with 0.250 of total travel, now you are talking about 1500-2000lb springs and high volume shock valving. Not this week. DougW

08-21-2013, 05:33 PM	#64
DougW Senior Member Join Date: May 2013 Drives: FR-S stock for now Location: SC Posts: 160 Thanks: 3 Thanked 171 Times in 81 Posts Mentioned: 10 Post(s)	currently useless vsc sport button So what's wrong with the vsc button? DougW

08-21-2013, 08:39 PM	#66
DougW Senior Member Join Date: May 2013 Drives: FR-S stock for now Location: SC Posts: 160 Thanks: 3 Thanked 171 Times in 81 Posts Mentioned: 10 Post(s)	The VSC applies the brakes based on how out of control you are in yaw. It did a good job last winter when I was driving back from Charlotte during an ice storm. Several times I was crossed up and it pulled it back in line, I was playing with it on and off just to see what it does, finally the little picture hung me a bird and hid under the speedo until I got home. Ha Ha but it does work. Maybe include the snow switch for the manuals, don't know the cost. DougW

08-21-2013, 10:16 PM	#68
xwd Senior Member Join Date: Feb 2012 Drives: 2013 DGM Subaru BRZ (Subie #9) Location: ATL, US Posts: 2,667 Thanks: 123 Thanked 861 Times in 552 Posts Mentioned: 32 Post(s)	Seems pretty cool and they aren't super expensive. Just for giggles I contacted a local company, Magneshock who makes Magneto-Rheological shocks. Right now they only have the ability to pre-program compression/rebound curves, although the controller can store 2500 different profiles, but they said race teams have built their own realtime controller for them. Not cheap though. >$10K.

08-22-2013, 08:38 AM	#69
DougW Senior Member Join Date: May 2013 Drives: FR-S stock for now Location: SC Posts: 160 Thanks: 3 Thanked 171 Times in 81 Posts Mentioned: 10 Post(s)	Yea, I've known those guys for 30 years he got screwed out of the MR patent thanks to a military contract. I used to have a business on Buford highway in the 70s/80s before I moved to the SC mountains. MR fluid is neat stuff but is expensive and abrasive, the new Corvette is going to the Bilstein Damptronics both because of cost and warranty issues. With MR you can build the valve stack in software by just using an orifice but at $750 a pint just can't do it for the street market. Illegal in most pro racing. DougW

08-22-2013, 05:25 PM	#70
smbstyle Senior Member Join Date: Apr 2013 Drives: 2013 SWP BRZ Location: Forsyth, GA Posts: 1,008 Thanks: 224 Thanked 681 Times in 302 Posts Mentioned: 26 Post(s)	I'll be available for Road Atlanta and Barber testing! Or come on down to Sebring and REALLY see how these things hold up....

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