12-07-2016, 11:41 PM | #15 |
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Kind of glad I'm waiting for the 2018 MY. By then, hopefully all this experimental crap will be worked out. :P
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12-08-2016, 05:54 AM | #16 |
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Perhaps someone a bit more technically oriented knows the answer to this, but is it typical for the driver and passenger sides to be at a slightly diff height?
The OCD in me wants them exactly the same LOL. Looks great though. I may be stopping by Ricardo.
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12-08-2016, 06:07 AM | #17 |
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+1
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12-08-2016, 07:37 AM | #18 | |
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And what, if anything, was done to deal with the MR system. This seems like a subtle drop. But it really finishes the look off...very impressed with the visual results. |
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12-08-2016, 09:37 AM | #19 |
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I don't see it affecting the MR at all. My understanding of how it works, is the system monitors all the driver inputs, the sensors to know what the car is doing, and any movements in the suspension from bumps or body roll, to make instantaneous adjustments to either stiffen or soften the shocks. I don't think it uses any sensors to detect ride height, because it has no way to change ride height like air shocks or hydraulics do. The BMW S1000RR HP4 has MR shock and forks on it that work the same way and ride height is adjustable to help tailor the bike for the track.
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12-08-2016, 09:47 AM | #20 |
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Yes. If the surface is slightly off, the difference will almost always be larger in the rear than the front, because the front sway bar is typically way stiffer than the rear. A mid or rear engine car might have stiffer bars in the rear or they'll be about equal. Even if you had a vehicle sitting on a perfectly smooth and level surface, you'd have a hard time finding a vehicle with exactly the same measurements all around. The differences seen here are so small, you'll never see them unless you stick a measuring tape to it.
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12-08-2016, 10:10 AM | #21 | ||
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Not sure why the front end was sitting so high. We checked in Touring, Sport, and Track, not much of a difference was made between the different modes. PM Sent Yea, mother nature decided to bring in a cold front here in Houston so we have cloud coverage for the new few days. I am hoping to get some better pics if it clears up. I will get this info, dont have it right now. Quote:
Here are the springs that we used.... BMR |
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12-08-2016, 10:20 AM | #22 | |
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12-08-2016, 10:20 AM | #23 | ||
I used to be Dragoneye...
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For what it's worth (I don't know the Gen 6 specs)...the 5th-gen unilaterally had thicker (stiffer) stabilizer bars in the rear for each model. ....... Personally, I have just two concerns when modifying the suspension on an MR vehicle....1) Does the shock piston have enough travel left to deal with a full compression situation using a lowering spring...and 2) Does the ride height sensor have enough travel left to deal with a full compression situation. IF....if the ride height sensor uses a static measurement...then I would have a third concern: will a lower setting due to new springs, cause the suspension to function in a non-optimal part of the calibration? |
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12-08-2016, 11:07 AM | #24 | |
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12-08-2016, 11:08 AM | #25 |
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Nice pic Mr Wyndham! I still may be right though. Only a MR engineer can tell us for sure, but I would guess that sensor is more to measure the amount and abrubtness of movement. It could also be used for ride height, because I have those on my Escalade and they are used to help the air ride suspension to level the vehicle the best it can, based on load carrying and driving maneuvers. The only reason I don't think the MR really cares about ride height is because all it can do is change the viscosity of the oil in the shock and I'm pretty sure the ride height isn't going to change that, but I could be wrong. They could've very easily programmed the system to stiffen the shocks the more they are compressed to soften bottoming out the suspension. I still don't see that hurting anything other than maybe the ride comfort not being quite as good. The suspension would still have the same bump stops or whatever it uses to limit the compression .....and extension.
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12-08-2016, 11:34 AM | #26 |
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I lowered my 5th gen ZL1 and while the improvement to the stance of the car was fantastic, it did make the ride quality more harsh. Bumps in the road could be especially jaw breaking. I'm hesitant to do it again on my new ZL1 just for that reason.
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12-08-2016, 12:25 PM | #27 |
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I'm with Mr. Wyndham regarding the suspension travel/height sensors... I was in an accident last spring and had to replace some front suspension components, including sensors, and MRC/Steering were completely out of whack (car was too soft and the steering felt like a 90's Deville. TC might have been impacted as well, but I didn't test) when everything was first put back together. The company that owns the body shop also owns one of the bigger Chevy dealers in the area and they had to recalibrate those sensors for everything to work properly again - this is just what I was told - they called GM engineers to find out what to do and had to load a custom calibration program for the Gen6 into their computer. After the sensors were recalibrated (unfortunately I didn't talk to the guys at the dealership and I'm not sure what that entails) the car started driving like it should.
When installing my lowering springs I measured where the sensor arms sit, so I can do the same with new springs and make shorter connecting rods to keep the sensors in the same position as stock. I never got around to doing that second part so I don't know if it actually makes a difference or if a 1" drop affects anything to begin with. My recalibration experience doesn't make sense if those sensors are just for measuring rate of suspension compression/rebound
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12-08-2016, 12:30 PM | #28 | |
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To get the look there are going to be some compromises. Our customer, and us as well, had the same concerns. After driving the car about 20 miles on Houston roads, Hwy 290 and 1960 area to be more specific, we found that the ride was not that bad at all. We were surprised that the ride was not effected all that much. With a 5th Gen I will agree with you, the ride did change dramatically and was very rough for some reason. Not sure why this car is so different but we liked the way the car handled after the springs. |
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