Droped Spindle??
Le Mans Master
Joined: Sep 2009
Posts: 6,937
Likes: 348
From: My interests are mobile
Lowering a car by wedges (or adjusting coil over sleeves up) changes the geometry as the suspension is now in a different place in it's travel. This changes all sorts of things, such as bump steer, roll center, and instant center.
By lowering it with drop spindles, the suspension will stay in the exact same place in it's travel, keeping the geometry where it was originally designed. I haven't done an analysis of the suspension to see what happens when you lower it, but BrianCunningham might be able to chime in.
Mustangs, for example, are notorious for having geometry problems when lowered. The front roll center will drop below ground level, and this causes all kinds of issues, one of them being increased body roll.
I would be interested, but the real issues with aftermarket spindles, particularly aluminum ones, would be a proper FEA analysis, as some of the Mustang spindles have been known to break (which puts you in a world of hurt). LG makes drop spindles for C5's and C6's, but I've never seen such a product for a C4.
By lowering it with drop spindles, the suspension will stay in the exact same place in it's travel, keeping the geometry where it was originally designed. I haven't done an analysis of the suspension to see what happens when you lower it, but BrianCunningham might be able to chime in.
Mustangs, for example, are notorious for having geometry problems when lowered. The front roll center will drop below ground level, and this causes all kinds of issues, one of them being increased body roll.
I would be interested, but the real issues with aftermarket spindles, particularly aluminum ones, would be a proper FEA analysis, as some of the Mustang spindles have been known to break (which puts you in a world of hurt). LG makes drop spindles for C5's and C6's, but I've never seen such a product for a C4.
Le Mans Master
Joined: Sep 2005
Posts: 6,551
Likes: 36
From: Jenks OK
There's some good discussion going on but I'll leave it to the people who know more then me.Out of curiosity does anyone have a diagram showing the difference between the suspension geometry with a dropped spindle versus just lowering the car?
I'm having a hard time visualizing this and I'm on the road so I can't just stick my head under my car....
Thanks for humoring my ignorance.
