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HOW TO: Ultimate budget front LCAs

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  • #31
    How is the camber curve up front now that you moved the FLCA down some?
    http://sosideways.wordpress.com/

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    • #32
      It's got to be better. I haven't taken it to the track since I finished this obviously.
      '18 Chevrolet Volt - Electric fun hatch for DD duty!


      DefSport Koni Sleeve and Spring Perch Buy!!!
      http://www.nissanroadracing.com/showthread.php?t=5902

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      • #33
        Well, you could probably droop the wheel and jack it up and see if it stays about the same, gains negative camber, or gains positive camber as it compresses

        Oh I almost forgot.

        Def, if you have the time, could you please measure how much metal there is past the spherical bearing on your Godspeed FLCAs? I want to see how much more clearance there is to gain from going with the Godspeed arms compared to using the stock arms.
        Last edited by SoSideways; 11-27-2009, 01:01 PM.
        http://sosideways.wordpress.com/

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        • #34
          The front suspension is easy to "eyeball" the camber gain. It's going to gain camber under compression now for quite a bit of travel since the angle wrt the strut is much less than 90 degrees.
          '18 Chevrolet Volt - Electric fun hatch for DD duty!


          DefSport Koni Sleeve and Spring Perch Buy!!!
          http://www.nissanroadracing.com/showthread.php?t=5902

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          • #35
            Gain camber, as in negative camber? Or positive camber?
            http://sosideways.wordpress.com/

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            • #36
              Gain negative camber, you're putting things closer to stock geometry.
              '18 Chevrolet Volt - Electric fun hatch for DD duty!


              DefSport Koni Sleeve and Spring Perch Buy!!!
              http://www.nissanroadracing.com/showthread.php?t=5902

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              • #37
                Awesome. Thanks for the clear up.

                I really want to do this now... except I probably won't be able to fund this project for awhile...
                http://sosideways.wordpress.com/

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                • #38
                  Hey Def, just got linked this thread by CodyAce via Zilvia PM... great budget setup!

                  I can get Godspeed stuff pretty cheap, and have the Midwest Control stuff in stock for the most part all the time, so I'd just have to hit up McMaster (right up the street from my work) and pick up the rest of the hardware and those shims to put together a kit.

                  What's the collective feeling on changing the front track by threading in the heim that connects to the subframe? It will have changes on overall LCA length and the angle with the knuckle, as well as the angle with the coilover (changed with top mounts), but I'm having trouble deciding what geometry changes it would make...

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                  • #39
                    Shortening the LCA will affect the steering geometry and to some lesser extent, the camber curve and ackerman.
                    Originally posted by SoSideways
                    I don't care what color they are as long as they are LONG AND HARD.
                    '04 G35 Sedan 6MT- The DD
                    '96 240SX- The Track Toy

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                    • #40
                      With these arms, the only real option is stock length with a little grinding, or longer than stock. For 99% of the cars out there I'd probably just leave it the stock length and correct the roll center.
                      '18 Chevrolet Volt - Electric fun hatch for DD duty!


                      DefSport Koni Sleeve and Spring Perch Buy!!!
                      http://www.nissanroadracing.com/showthread.php?t=5902

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                      • #41
                        Originally posted by GSXRJJordan View Post
                        Hey Def, just got linked this thread by CodyAce via Zilvia PM... great budget setup!

                        I can get Godspeed stuff pretty cheap, and have the Midwest Control stuff in stock for the most part all the time, so I'd just have to hit up McMaster (right up the street from my work) and pick up the rest of the hardware and those shims to put together a kit.

                        What's the collective feeling on changing the front track by threading in the heim that connects to the subframe? It will have changes on overall LCA length and the angle with the knuckle, as well as the angle with the coilover (changed with top mounts), but I'm having trouble deciding what geometry changes it would make...
                        BTW - curious to see the thread on Zilvia. I'd like to see what all the "engineering experts" who probably struggled to graduate high school have to say about the whole thing.
                        '18 Chevrolet Volt - Electric fun hatch for DD duty!


                        DefSport Koni Sleeve and Spring Perch Buy!!!
                        http://www.nissanroadracing.com/showthread.php?t=5902

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                        • #42
                          What is the length of the stock ball joint (compared to your 2 measurments)

                          Also whats the reasoning for using an AIB-12T and not a COM-12T?
                          Strength or just because its a closer dimension to the Godspeed arms?

                          I just wouldve thought using the COM-T would be sufficient and also save you the hassle because you already used them in the shock bearings.

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                          • #43
                            Typed out a long response and lost it due to my internet crashing. Stock spindle to outer pivot measurement was probably 0.6-0.75"(hard to tell where center of pivot is on balljoint). Mine now is about 2" to center of pivot.

                            AIB-12T is much closer to the Godspeed bearing in all dimensions - that's the only reason I went with it.
                            '18 Chevrolet Volt - Electric fun hatch for DD duty!


                            DefSport Koni Sleeve and Spring Perch Buy!!!
                            http://www.nissanroadracing.com/showthread.php?t=5902

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                            • #44
                              Originally posted by Def View Post
                              Typed out a long response and lost it due to my internet crashing. Stock spindle to outer pivot measurement was probably 0.6-0.75"(hard to tell where center of pivot is on balljoint). Mine now is about 2" to center of pivot.

                              AIB-12T is much closer to the Godspeed bearing in all dimensions - that's the only reason I went with it.
                              if I push my ball joint over, you can kinda see where its pivoting.
                              Measuring the new ones off the shelf I come up with this.
                              About 31mm.


                              I have also sent off an order to have some snap ringed mono ball housings made up, so that you can do this mod to your stock arms.
                              Im still not sure what to do about the clearance to the rotors, I know the japs just take the shields off...

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                              • #45
                                There's no way a stock balljoint is 31 mm from the bottom of the spindle to the center of its rotation. Mine had the boot pretty compressed, and the boot is probably just over an inch above the pivot fully extended.
                                '18 Chevrolet Volt - Electric fun hatch for DD duty!


                                DefSport Koni Sleeve and Spring Perch Buy!!!
                                http://www.nissanroadracing.com/showthread.php?t=5902

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