Questions to those who run Buddy Club RSD with upper pillow ball mounts..
12-31-2012, 08:54 AM
#1
Questions to those who run Buddy Club RSD with upper pillow ball mounts..
Well while tearing down one of my cars this winter. I ran into the coil over problem that i have put off for too long. Now I have seen this mentioned here on the boards a few times but no one really stated there was a solution without messing with the preload. That is just not something I want to touch. The problem is if you drop the car any more than 2" without touching the preload the upper control arms will hit. I do not want to touch the preload so I am thinking of purchasing a slightly shorter spring from swift.
I think this problem is only run into with those who have the upper pillow ball mounts. I have thought about purchasing swift or some other form of aftermarket springs slightly shorter in the front to bring the upper perch up a little higher but I run into the issue of what the actual spring specs might be.
Well I went to the website and looked at the specs listed http://www.buddyclub.com.au/2007/rsd/rsd.html and did some measuring myself. The front and rears on the website state F:10k/H180 R: 10k/H180. Now Im guessing the H stands for height, 180mm? which should put the springs around 7.086 inches. Well Here is what I got.
Front
Rear
So I would guess the springs being much smaller in diameter would mean they are not the same spring rates? I am just looking for some insight on what the actual spring rates are. I am guessing the information in the website is most likely generic and not actual specs. I am also wondering if maybe the springs might have been swapped from front/rear or maybe just not the correct springs from the factory?
Any information or help would be great.
Thanks.
I think this problem is only run into with those who have the upper pillow ball mounts. I have thought about purchasing swift or some other form of aftermarket springs slightly shorter in the front to bring the upper perch up a little higher but I run into the issue of what the actual spring specs might be.
Well I went to the website and looked at the specs listed http://www.buddyclub.com.au/2007/rsd/rsd.html and did some measuring myself. The front and rears on the website state F:10k/H180 R: 10k/H180. Now Im guessing the H stands for height, 180mm? which should put the springs around 7.086 inches. Well Here is what I got.
Front
Rear
So I would guess the springs being much smaller in diameter would mean they are not the same spring rates? I am just looking for some insight on what the actual spring rates are. I am guessing the information in the website is most likely generic and not actual specs. I am also wondering if maybe the springs might have been swapped from front/rear or maybe just not the correct springs from the factory?
Any information or help would be great.
Thanks.
12-31-2012, 12:42 PM
#2
Moderator
http://www.pontiacracing.net/js_coil_spring_rate.htm
A lot of factors come into play. Number of active coils is a major factor, as well as spring height, wire diameter, and coil diameter. Plug your numbers into the calculator (you can ignore compressed length).
At a quick glance, the rear spring has less coils, and this is going to mean a higher spring rate all other things equal.
A lot of factors come into play. Number of active coils is a major factor, as well as spring height, wire diameter, and coil diameter. Plug your numbers into the calculator (you can ignore compressed length).
At a quick glance, the rear spring has less coils, and this is going to mean a higher spring rate all other things equal.
12-31-2012, 12:53 PM
#3
http://www.pontiacracing.net/js_coil_spring_rate.htm
A lot of factors come into play. Number of active coils is a major factor, as well as spring height, wire diameter, and coil diameter. Plug your numbers into the calculator (you can ignore compressed length).
At a quick glance, the rear spring has less coils, and this is going to mean a higher spring rate all other things equal.
A lot of factors come into play. Number of active coils is a major factor, as well as spring height, wire diameter, and coil diameter. Plug your numbers into the calculator (you can ignore compressed length).
At a quick glance, the rear spring has less coils, and this is going to mean a higher spring rate all other things equal.
12-31-2012, 12:58 PM
#4
Moderator
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