RWS by the numbers
10-30-2013, 09:07 AM
#31
Race Director
10-30-2013, 09:21 AM
#32
Nordschleife Master
Honda RWS has been discussed on this forum ever since it was announced in the GT3. I personally have no experience with the old Honda system besides what I've read and it is not the same. That's an antiquated system that didn't last.
What caught my attention in the 2014 Acura RLX is that is using a RWS system similar to the new GT3,except 1.8 degrees wheel movement instead of 1.5 and that it is designed to work with an AWD set up.
What caught my attention in the 2014 Acura RLX is that is using a RWS system similar to the new GT3,except 1.8 degrees wheel movement instead of 1.5 and that it is designed to work with an AWD set up.
10-30-2013, 12:53 PM
#34
Rennlist Member
1. I'm not sure that the front toe will have to be changed in order to facilitate turn-in as the RWS will take care of that. It will be interesting to see what adjustments are necessary once these cars get tracked.
2. I expect the usual camber issues will be the same F&R so an increase there will probably be necessary for the higher cornering G's on tracks.
3. Rear toe is really the big issue here IMO. My understanding is that the RWS eliminates the need for rear toe which should increase the life of the rear tires considerably.
I am not sure what the diff/RWS will do, if anything, to increase stability under heavy braking. It's interesting that the Acura system "In high-speed braking, each rear wheel angles inward, increasing braking ability and stability"
Mike do you know how the Porsche RWS system handles this issue?
10-30-2013, 03:40 PM
#35
Rennlist Member
I can see the future…There will be a app that come with your car called "hot lap". You simply drive to a track, launch the app, and the program will drive your car around the track fast (using GPS) while you sit in the car and enjoy the ride. No more warranty issues, no safety issues, etc. etc.
10-30-2013, 04:00 PM
#36
Race Director
Thread Starter
I am not sure what the diff/RWS will do, if anything, to increase stability under heavy braking. It's interesting that the Acura system "In high-speed braking, each rear wheel angles inward, increasing braking ability and stability"
Mike do you know how the Porsche RWS system handles this issue?
Mike do you know how the Porsche RWS system handles this issue?
As we know, under 50kph the rear wheels turn counter to front steering input up to 1.5 degrees and over 80kph they turn in the same direction as the front wheels up to 1.5 degrees ("harmonized" in Porsche marketing speak). What may be less commonly known is that between 50kph and 80kph there is a continuous transition between RW counter steering and harmonized steering depending on the driving situation. But no angling inward under braking, AFAIK.
10-30-2013, 05:17 PM
#37
Race Director
I can see the future…There will be a app that come with your car called "hot lap". You simply drive to a track, launch the app, and the program will drive your car around the track fast (using GPS) while you sit in the car and enjoy the ride. No more warranty issues, no safety issues, etc. etc.
11-03-2013, 08:14 PM
#38
Just a quick real life RWS and PCCB experience to share:
I took delivery of a 991 Turbo S Thursday, took it to the track Saturday (by the time I got to the track, it had 114 miles, which was good enough for breaking in, I hope). Since this is a GT3 thread, I won't bother you with Turbo specific heart pounding experience events but the RWS, while indeed imperceptible, was clearly making the car turn in much easier, especially in moderately fast (80+) mph min speed) sweepers. Initially, I consistently turned in a tad too soon, which I can only contribute to RWS, as I was using my usual turn in points in a track I have run extensively. Once I adjusted, it was so sweet. My min speed was a few mph faster but it is difficult to say if this was just RWS because I moved form a C4S to Turbo S, which obviously differ in power and weight as well as more torque percentage now being delivered to the fronts on the Turbo. Same tires on both cars, Pirelli P Zeros. My point is that RWS will make a noticeable difference in turning. You can still overcook a turn (ask me how I know).
The PCCB are likewise as we have read all along, remarkable. I initially used earlier breaking points as the Turbo was a lot faster but at the end of the day, I was using the SAME breaking points. Nothing short of amazing. Zero fade but it was 69 degrees. I'm still looking for the 380 mm steel rotor swap because of cost or replacing ceramic rotors, as I track a lot.
Just wanted to share. I'm not claiming expertise, just what I noticed.
I took delivery of a 991 Turbo S Thursday, took it to the track Saturday (by the time I got to the track, it had 114 miles, which was good enough for breaking in, I hope). Since this is a GT3 thread, I won't bother you with Turbo specific heart pounding experience events but the RWS, while indeed imperceptible, was clearly making the car turn in much easier, especially in moderately fast (80+) mph min speed) sweepers. Initially, I consistently turned in a tad too soon, which I can only contribute to RWS, as I was using my usual turn in points in a track I have run extensively. Once I adjusted, it was so sweet. My min speed was a few mph faster but it is difficult to say if this was just RWS because I moved form a C4S to Turbo S, which obviously differ in power and weight as well as more torque percentage now being delivered to the fronts on the Turbo. Same tires on both cars, Pirelli P Zeros. My point is that RWS will make a noticeable difference in turning. You can still overcook a turn (ask me how I know).
The PCCB are likewise as we have read all along, remarkable. I initially used earlier breaking points as the Turbo was a lot faster but at the end of the day, I was using the SAME breaking points. Nothing short of amazing. Zero fade but it was 69 degrees. I'm still looking for the 380 mm steel rotor swap because of cost or replacing ceramic rotors, as I track a lot.
Just wanted to share. I'm not claiming expertise, just what I noticed.
Last edited by SamFromTX; 11-03-2013 at 09:09 PM. Reason: typo
11-03-2013, 08:29 PM
#39
One of the problems is that a lot of this is just bench racing until the car is delivered and driven on the track.
11-04-2013, 03:31 PM
#41
Rennlist Member
Great to hear, would you be willing to post a write-up regarding the other aspects of the car in the 991TT section? A lot of us are waiting for ours w/ bated breath. 
Just a quick real life RWS and PCCB experience to share:
I took delivery of a 991 Turbo S Thursday, took it to the track Saturday (by the time I got to the track, it had 114 miles, which was good enough for breaking in, I hope). Since this is a GT3 thread, I won't bother you with Turbo specific heart pounding experience events but the RWS, while indeed imperceptible, was clearly making the car turn in much easier, especially in moderately fast (80+) mph min speed) sweepers. Initially, I consistently turned in a tad too soon, which I can only contribute to RWS, as I was using my usual turn in points in a track I have run extensively. Once I adjusted, it was so sweet. My min speed was a few mph faster but it is difficult to say if this was just RWS because I moved form a C4S to Turbo S, which obviously differ in power and weight as well as more torque percentage now being delivered to the fronts on the Turbo. Same tires on both cars, Pirelli P Zeros. My point is that RWS will make a noticeable difference in turning. You can still overcook a turn (ask me how I know).
The PCCB are likewise as we have read all along, remarkable. I initially used earlier breaking points as the Turbo was a lot faster but at the end of the day, I was using the SAME breaking points. Nothing short of amazing. Zero fade but it was 69 degrees. I'm still looking for the 380 mm steel rotor swap because of cost or replacing ceramic rotors, as I track a lot.
Just wanted to share. I'm not claiming expertise, just what I noticed.
I took delivery of a 991 Turbo S Thursday, took it to the track Saturday (by the time I got to the track, it had 114 miles, which was good enough for breaking in, I hope). Since this is a GT3 thread, I won't bother you with Turbo specific heart pounding experience events but the RWS, while indeed imperceptible, was clearly making the car turn in much easier, especially in moderately fast (80+) mph min speed) sweepers. Initially, I consistently turned in a tad too soon, which I can only contribute to RWS, as I was using my usual turn in points in a track I have run extensively. Once I adjusted, it was so sweet. My min speed was a few mph faster but it is difficult to say if this was just RWS because I moved form a C4S to Turbo S, which obviously differ in power and weight as well as more torque percentage now being delivered to the fronts on the Turbo. Same tires on both cars, Pirelli P Zeros. My point is that RWS will make a noticeable difference in turning. You can still overcook a turn (ask me how I know).
The PCCB are likewise as we have read all along, remarkable. I initially used earlier breaking points as the Turbo was a lot faster but at the end of the day, I was using the SAME breaking points. Nothing short of amazing. Zero fade but it was 69 degrees. I'm still looking for the 380 mm steel rotor swap because of cost or replacing ceramic rotors, as I track a lot.
Just wanted to share. I'm not claiming expertise, just what I noticed.
11-04-2013, 03:34 PM
#42
Would love to, can you send me a link to the section? I tried to look for it but failed (not very tech savy). I have lots to share.
11-04-2013, 03:39 PM
#43
Rennlist Member
11-04-2013, 03:46 PM
#44
Racer
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