Cartridge Front Struts/Dampers For Daytona GT3 Cup Cars
11-20-2004, 10:59 AM
#4
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Pardon my ignorance, Robert;
I note the spiral configuration of the threaded collars. Is this for merely retaining the spring, or for mildly-to-moderately altering pre-load and/or rate without changing springs?
Lovely stuff, indeed! Too bad people take it out and trash it!
I note the spiral configuration of the threaded collars. Is this for merely retaining the spring, or for mildly-to-moderately altering pre-load and/or rate without changing springs?
Lovely stuff, indeed! Too bad people take it out and trash it!
11-20-2004, 02:09 PM
#5
The spring adjusters travel up and down the strut (and the rear damper) to adjust for height. The spring itself can be put into one of four positions to adjust rate. And, of course, if you do not want to use these adjusters, a standard spring platform comes with the dampers.
P.S. The spring adjusters are M52 x 1.5 and are sold by Porsche Motorsport North America for, I believe, $125 each.
P.S. The spring adjusters are M52 x 1.5 and are sold by Porsche Motorsport North America for, I believe, $125 each.
11-20-2004, 10:05 PM
#7
Actually, although Cartridge supplies them, they are now the official PMNA spring adjuster. As to the differences between these and the older design, they are fivefold:
1. they have an integrated locking mechanism rather than using a double locking ring below --this yields three advantages:
a. you can get the suspension lower as the locking rings add height,
b. height adjustment is quicker in that you turn only the spring adjuster rather than the spring adjuster plus two locking rings and
c. weight is reduced through the elimination of the locking rings;
2. the Cartridge spring adjuster itself is more than 40% lighter than the original design due to re-engineering and finite element analysis;
3. it uses a higher quality stainless steel spring stop and spring stop fastener;
4. the edges are rounded so as to reduce spring abrasion;
5. it is less expensive than the older design.
In short, BLC -- better, lighter, cheaper.
1. they have an integrated locking mechanism rather than using a double locking ring below --this yields three advantages:
a. you can get the suspension lower as the locking rings add height,
b. height adjustment is quicker in that you turn only the spring adjuster rather than the spring adjuster plus two locking rings and
c. weight is reduced through the elimination of the locking rings;
2. the Cartridge spring adjuster itself is more than 40% lighter than the original design due to re-engineering and finite element analysis;
3. it uses a higher quality stainless steel spring stop and spring stop fastener;
4. the edges are rounded so as to reduce spring abrasion;
5. it is less expensive than the older design.
In short, BLC -- better, lighter, cheaper.
Last edited by Robert Linton; 11-20-2004 at 10:25 PM.
