Nissan 370Z Forum - View Single Post - Spring Pre-Load: Help me understand the physics.

synolimit · 02-10-2014, 11:15 AM

Preload shouldn't control ride height. A good set like FA moves the whole lower shock instead of the perch the spring sits on. That way ride height is separate from preload. 2 completely different turning coils.

No idea but if not loaded in a point where the car gets a wheel airborne that spring will be completely lose and flop around and then make a hell of a noise when you come back down. Preloaded, the spring will stay tight in the coilover. Also I believe preloaded keeps the wheel pushed down to the ground and whenever airborne or just weight is transferred off the wheel you don't just want gravity pulling the wheel out of the wheel well. You want it pushed out so it meets the ground and keeps traction up. Again no idea, just guessing.

02-10-2014, 11:15 AM	#4 (permalink)
synolimit A True Z Fanatic Join Date: May 2013 Location: Columbus, OH Posts: 5,051 Drives: 2013 Silver 370z Rep Power: 3389	Preload shouldn't control ride height. A good set like FA moves the whole lower shock instead of the perch the spring sits on. That way ride height is separate from preload. 2 completely different turning coils. No idea but if not loaded in a point where the car gets a wheel airborne that spring will be completely lose and flop around and then make a hell of a noise when you come back down. Preloaded, the spring will stay tight in the coilover. Also I believe preloaded keeps the wheel pushed down to the ground and whenever airborne or just weight is transferred off the wheel you don't just want gravity pulling the wheel out of the wheel well. You want it pushed out so it meets the ground and keeps traction up. Again no idea, just guessing. __________________ 13 370z- Last edited by synolimit; 02-10-2014 at 11:18 AM.