GS AWD (lowered suspension data)
05-23-11 | 08:00 AM
#455
im not removing any play in the axles, all im doing is lining everything back up so its not stretched out on an awkward angle when is lowered.
05-24-11 | 11:10 AM
#456
Driver
Joined: Jul 2010
Posts: 105
Likes: 0
From: NA
Originally Posted by GOOGLE
Here is a pic of the CV bucket and the "spider" (the set of 3 roller bearings that go in the CV bucket).
When the car is new the spider rides on a smooth surface in the CV. But as time goes on it makes a wear spot. This starts to happen by around 20k miles or so (this is very rough estimate based on folks who have complained about the vibration after lowering). The pic below shows what the wear spot looks like:
When you lower the car, it moves the spider to a new spot where it normally rides. Based on the geometry, the new spot is very close to the old spot. The vibration is caused by the spider sliding over the edge of the new spot into the old spot. It trammels back and forth there..
When the car is new the spider rides on a smooth surface in the CV. But as time goes on it makes a wear spot. This starts to happen by around 20k miles or so (this is very rough estimate based on folks who have complained about the vibration after lowering). The pic below shows what the wear spot looks like:
When you lower the car, it moves the spider to a new spot where it normally rides. Based on the geometry, the new spot is very close to the old spot. The vibration is caused by the spider sliding over the edge of the new spot into the old spot. It trammels back and forth there..
05-26-11 | 02:17 PM
#460
Driver School Candidate
Joined: Feb 2010
Posts: 3
Likes: 0
From: PA
has anyone looked into "roll center adjusters".
http://www.maxrev.net/site/index.php...sion&Itemid=58
http://www.maxrev.net/site/index.php...sion&Itemid=58
06-06-11 | 01:08 PM
#461
Actually that is an option. Essentially all that needs to be done is extend the length of the axle (at least, that is what the hypothesis is) 187 is doing this by adding a "spacer" in between the axle and the wheel knuckle. If proven, there could potentially be several ways to accomplish this. Custom CV buckets, spacers, custom axles, etc. It all depends on how much you are willing to spend, time, and resources..These spacers would be easy to install and easily mass produced.
06-13-11 | 08:01 AM
#463
Alright new spacers on and took it for a quick drive with the guy. Vibrations have decreased a lot from what I could notice in that 5 mins. Having the car aligned now to get everything squared away. Hopefully no more lights on the ride home. I should have better input after I take the 45 min drive home.
The problem the first time was it was not centered. We had them in the right location just not centered. We had to temp. hold it in place while the axle went back in. Now with everything tight it shouldn't move. I could possibly come up with a more elaborate design for the spacers so you don't have to temp hold them in place but I'm sure the cost would probably triple.
We tested the wheel once it was installed and spun it and it wasn't hitting or rubbing on anything, so I'm keeping my fingers crossed for the ride home.
The problem the first time was it was not centered. We had them in the right location just not centered. We had to temp. hold it in place while the axle went back in. Now with everything tight it shouldn't move. I could possibly come up with a more elaborate design for the spacers so you don't have to temp hold them in place but I'm sure the cost would probably triple.
We tested the wheel once it was installed and spun it and it wasn't hitting or rubbing on anything, so I'm keeping my fingers crossed for the ride home.
06-13-11 | 08:11 AM
#464
06-13-11 | 08:18 AM
#465
Ha I meant more elaborate so you don't have to temp hold it in place. We just used tape to hold it centered and slide it back in. Pretty easy and it only takes about 10 mins per side to install. Just need a 30mm socket for the axle nut.