I thought it would be good to have a single thread where people could contribute weight and size measurements of the various suspension components for modeling purposes. It would also be great if people were to upload solid models of individual pieces or complete assemblies. This will give people a place to start for calculating natural frequencies and suspension travel paths. It will also help figure out where the most weight can be pulled out of the unsprung components in the car.

Please contribute in your posts and I will update the next three posts as appropriate. Thanks.

 

Component Weights
FRONT
Lower Control Arm - 5.6* (1)
Stock Rotor - 19.4*
Whiteline Balljoint + Tie Rod End - 1.8*
Caliper + Stainless Brake Line - 10.6*
Dust Shield + Moving Hardware - 1.6*
Hub + Axle - 32.4* (2)
PIC Select Strut Assmebly - 7.2* (3)
10kg/200mm/63.5mm No Name Spring - 3.8*
Godspeed Swaybar - 5.4*
Tanabe Swaybar - 7.6

REAR
Lower Control Arm - 3.6*
Trailing Arm - 4.0*
PIC Select Shock Assembly - 5.8* (3)
14kg/180mm/63.5mm No Name Spring - 4.2*
Hotchkiss Swaybar - 6.7*
Rear Caliper - 4.6*
Rear Rotor - 13.4*
Rear Hub Assembly - 42.2* (4)
Rear Subframe - 21.6*



NOTES
* Weighed +/- 0.2 Pounds
(1) No ball joint or sway bar mount, includes Perrin PSRS and custom spherical bearing front joint
(2) Axle, upright, hub, wheel speed sensor
(3) Strut/shock, lower perch and mount only, camber plate and upper perch not included
(4) Axle, upper control arm, toe control arm, hub, hub carrier, wheel speed sensor, emergency brake assembly


Approximate Unsprung Weight (less wheel/tire)
Front - 77.7 pounds/side (for individual component weights on my car ***does not reflect a stock car***)
Rear - 67.3 pounds/side (for individual component weights on my car ***does not reflect a stock car***)

 

Component Measurements
Saved For Future Use

*** I have measured lots of things so far, will update soon***

 

Solid Models and Calculations/Examples
Saved For Future Use

*** I have several solid models of individual pieces, I do not have anywhere to upload though***

 

old thread but... would you be willing to show the math on this? /\

 

It's been a long time so I can't say exactly at this point.

I would imagine I took 50% of the weight that is partly sprung (control arms, struts, springs, axles, etc.) 100% on stuff that moves at the same rate as the wheel (brakes, hub, tie-rod ends, etc.)

If I recall correctly, I think I also pulled the springs and tossed a scale under the suspension and measured it and it came up very close to the same.

I forgot about this thread, maybe I'll add some info some time soon.

 

thanks! I did the math from the weights I measured myself and the weights you/others have posted... and I got similar numbers

 

oh, except for the rear subframe at 21.6lbs, how/why does that come in to play? I'm also leaving out the swaybar weights, the part that's not supported by the frame is probably pretty minimal, no?

 

endlinks weigh about 0.5 lbs each so pretty minimal is my thought. sway bar weight should be mostly sprung weight.

I think the only issue with the swaybar is the stiction on the bushings affecting the time the bar spends in transit to a set position...other than that it is sprung weight

 

Subframe weight is just there for the pound pincher guys that get motivated to do a tubular subframe. Same with the swaybar weights, I weighed them and thought I would add it here for informational purposes.

I would say the sway bars are insignifigant in regards to unsprung weight.