New Product RRRacing / Penske Suspension Development for ISF
08-13-15, 12:50 PM
#46
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In theory if you do the square set up you can induce over steer. My car doesnt have an issue with understeer after I went to the F sport rear bar. It tend to over steer on corner exit. My courses seem a bit tighter than the ones I have seen others on. It would be cool to be able to rotate the tires though.
Rafi
08-13-15, 02:06 PM
#47
I figure someone is going to ask this eventually, and I want to know this myself too: but what's the main differentiating factor between these vs. the version offered by FIGS? Looks like both models were developed from the 7500 series offered by Penske. Obviously they're designed and spec'ed based on input from the respective developers, but I'm curious about the differentiating characteristics of the components used and the resulting affect on performance.
08-14-15, 03:57 AM
#49
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I figure someone is going to ask this eventually, and I want to know this myself too: but what's the main differentiating factor between these vs. the version offered by FIGS? Looks like both models were developed from the 7500 series offered by Penske. Obviously they're designed and spec'ed based on input from the respective developers, but I'm curious about the differentiating characteristics of the components used and the resulting affect on performance.
I totally understand this question and where it is coming from, but I would rather just talk about our product. I am sure that anyone considering this purchase can talk to Mike, and to me, and make an informed decision based on that.
If anyone has a specific question like "why use Hypercoil springs" or "why do you use helper springs vs. tender springs," I would gladly go into that.
-Rafi
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08-14-15, 07:04 PM
#50
Tech Info Resource
iTrader: (2)
Once again, if you know the camber curves and the natural frequency of your set up, you won't need to apply band aids like sway bar adjustments.
08-14-15, 08:00 PM
#51
Sways should be the last thing you change. It's far more important to get the spring rates right and the dampers working correctly with the springs. Sway bars make your independent suspension more like a live axle, so they should be used as sparingly as possible.
Once again, if you know the camber curves and the natural frequency of your set up, you won't need to apply band aids like sway bar adjustments.
Once again, if you know the camber curves and the natural frequency of your set up, you won't need to apply band aids like sway bar adjustments.
08-15-15, 10:35 AM
#52
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Sways should be the last thing you change. It's far more important to get the spring rates right and the dampers working correctly with the springs. Sway bars make your independent suspension more like a live axle, so they should be used as sparingly as possible.
Once again, if you know the camber curves and the natural frequency of your set up, you won't need to apply band aids like sway bar adjustments.
Once again, if you know the camber curves and the natural frequency of your set up, you won't need to apply band aids like sway bar adjustments.
Totally agree. I did however perform a slight mod to the front bar which works really well with our Penske setup and 16/14 spring combo. Slight increase in front sway bar stiffness improves the balance and turn-in/transition response. I don't like stiffer rear sway bars because they tend to lead to inside wheels lifting and traction loss.
-Rafi
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08-15-15, 10:36 AM
#53
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We just put together a video of our USRS bushing/housing system compared to stock LCA bushings. We think this setup works really well in conjunction with the RRR/Penske coilovers, and we off a discount for USRS + Coilover package.
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We Engineer Track Proven Upgrades For Your Lexus!
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08-15-15, 07:30 PM
#54
Lexus Fanatic
I agree that the sway bar in the rear is not ideal but it works. I had 255/295 combo on my LS460 and had never ever had under steer. I had under steer the first week I had my ISF that frankly scared me. The rear bar was a great choice to immediately dial out the issue, and I didn't have to lower the car or go down that road of inevitable issues and other " bandaids" to correct the issue of height, tire wear,and the long list of stuff you alter with a change in ride height. ( camber, arms, toe links, etc.). Also when you first buy a car like the ISF there are very few who are immediately out to drop 3-5k for suspension mods and do all the other parts needed to correct the affect of the suspension changes so the $170 plus install is ideal for a very easy very quick fix. I agree with what Lobux and Rafi are saying but I still think F sport rear bar works for 99% of owners who are simply driving their F's on the street
08-15-15, 07:33 PM
#55
Lexus Fanatic
Sways should be the last thing you change. It's far more important to get the spring rates right and the dampers working correctly with the springs. Sway bars make your independent suspension more like a live axle, so they should be used as sparingly as possible.
Once again, if you know the camber curves and the natural frequency of your set up, you won't need to apply band aids like sway bar adjustments.
Once again, if you know the camber curves and the natural frequency of your set up, you won't need to apply band aids like sway bar adjustments.
08-29-15, 04:47 AM
#56
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Hi All,
Just wanted to give you guys a heads up on another new project we are working on ..... We will be adding full electronic adjustability to our ISF and soon to be released RCF Penske coilovers.
What does that mean?
(1) Full on-the-fly cabin adjustability of each corner
(2) Allows programing of preset modes, such as "comfort, sport, race" at the press of a button.
(3) Allows GPS based speed sensitive adjustments
Should be awesome, we will update this thread as we get the components machined and tested.
-Rafi
Just wanted to give you guys a heads up on another new project we are working on ..... We will be adding full electronic adjustability to our ISF and soon to be released RCF Penske coilovers.
What does that mean?
(1) Full on-the-fly cabin adjustability of each corner
(2) Allows programing of preset modes, such as "comfort, sport, race" at the press of a button.
(3) Allows GPS based speed sensitive adjustments
Should be awesome, we will update this thread as we get the components machined and tested.
-Rafi
__________________
We Engineer Track Proven Upgrades For Your Lexus!
SUPERCHARGERS : ECU TUNING : SUSPENSION : EXHAUST : PPE MASTER DEALER
SUPERCHARGERS : ECU TUNING : SUSPENSION : EXHAUST : PPE MASTER DEALER
08-29-15, 05:32 AM
#57
RRRacing / Penske Suspension Development for ISF
Originally Posted by RRRacing
Hi All,
Just wanted to give you guys a heads up on another new project we are working on ..... We will be adding full electronic adjustability to our ISF and soon to be released RCF Penske coilovers.
What does that mean?
(1) Full on-the-fly cabin adjustability of each corner
(2) Allows programing of preset modes, such as "comfort, sport, race" at the press of a button.
(3) Allows GPS based speed sensitive adjustments
Should be awesome, we will update this thread as we get the components machined and tested.
-Rafi
Just wanted to give you guys a heads up on another new project we are working on ..... We will be adding full electronic adjustability to our ISF and soon to be released RCF Penske coilovers.
What does that mean?
(1) Full on-the-fly cabin adjustability of each corner
(2) Allows programing of preset modes, such as "comfort, sport, race" at the press of a button.
(3) Allows GPS based speed sensitive adjustments
Should be awesome, we will update this thread as we get the components machined and tested.
-Rafi
Last edited by ZaxF; 08-29-15 at 10:55 AM.
08-29-15, 07:11 AM
#58
Hi All,
Just wanted to give you guys a heads up on another new project we are working on ..... We will be adding full electronic adjustability to our ISF and soon to be released RCF Penske coilovers.
What does that mean?
(1) Full on-the-fly cabin adjustability of each corner
(2) Allows programing of preset modes, such as "comfort, sport, race" at the press of a button.
(3) Allows GPS based speed sensitive adjustments
Should be awesome, we will update this thread as we get the components machined and tested.
-Rafi
Just wanted to give you guys a heads up on another new project we are working on ..... We will be adding full electronic adjustability to our ISF and soon to be released RCF Penske coilovers.
What does that mean?
(1) Full on-the-fly cabin adjustability of each corner
(2) Allows programing of preset modes, such as "comfort, sport, race" at the press of a button.
(3) Allows GPS based speed sensitive adjustments
Should be awesome, we will update this thread as we get the components machined and tested.
-Rafi
08-29-15, 12:22 PM
#59
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Thread Starter
iTrader: (1)
No worries, it will be priced very reasonably. A lot of people were surprised when we priced the coilovers at just $3500, I expect that we will be able to hold the price down to less than $4000 with electronic dampening.
Rafi
08-31-15, 04:25 AM
#60
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iTrader: (1)
It will adjust rebound only, compression on the Penske's is adjusted from below. Generally speaking though, once you set the compression correctly, rebound affects ride and handling more than compression.
-Rafi
__________________
We Engineer Track Proven Upgrades For Your Lexus!
SUPERCHARGERS : ECU TUNING : SUSPENSION : EXHAUST : PPE MASTER DEALER
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