wont turn going in

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  • badfast47
    Senior Member
    • Dec 2008
    • 139

    #1

    wont turn going in

    I have a metric clip with nova lowers using a 650 RF spring, 4/6 shock, 600 LF spring 5/3 shock. LR 7/2 shock in front, 200 spring in back on a slider 4 bar floated. RR 3 link set up clamped. Rod is at about 5 degrees up. 200 spring on top and 94 shock behind rear end. I'm using a shorty bar at pinion and 3 inches of rake to the frame. There is about a 1/4 inch of lead in the RR. The car wont turn enough when i enter the corner. It can be very unpredictable because once i DO get it to turn
    (if it doesn't push) it doesn't give me the bite i need till i get straight. See any thing i can do to help this ?
  • Hagen14t
    Senior Member
    • May 2011
    • 167

    #2
    How much bite?

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    • xxxmod
      Senior Member
      • Jan 2012
      • 111

      #3
      Square up the rear end and put in 4 degrees caster split.

      Comment

      • TCmod
        Member
        • Aug 2008
        • 94

        #4
        Originally posted by badfast47 View Post
        I have a metric clip with nova lowers using a 650 RF spring, 4/6 shock, 600 LF spring 5/3 shock. LR 7/2 shock in front, 200 spring in back on a slider 4 bar floated. RR 3 link set up clamped. Rod is at about 5 degrees up. 200 spring on top and 94 shock behind rear end. I'm using a shorty bar at pinion and 3 inches of rake to the frame. There is about a 1/4 inch of lead in the RR. The car wont turn enough when i enter the corner. It can be very unpredictable because once i DO get it to turn
        (if it doesn't push) it doesn't give me the bite i need till i get straight. See any thing i can do to help this ?
        I would trail the RR just by looking at what you got here. I really wouldn't worry about forward bite till you can get you entry fixed first.

        Comment

        • OCrace2
          Junior Member
          • Apr 2012
          • 2

          #5
          I've had that problem before. Take the short bar and put on a jbar, dont need tons of angle. It will corner a lot better. Also go softer on the RF spring. Either LF 650 RF600 or just soften RF to 600. Trailing the rear end will kill forward, no need for that. Jbar should make the corner a lot smoother and since youll go through the corner well, you will have more momentum, fw bite etc good luck
          Last edited by OCrace2; 04-12-2012, 07:28 PM.

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          • washeduptoo
            Senior Member
            • May 2007
            • 1353

            #6
            Your rr bar is 4-5 inches longer than lr bars? I would swap the front springs, we also ran the rr trailed .25-.5 compared to lr. Also do the caster split. The Jbar will also make the car easier to handle. Just some suggestions and good luck

            Comment

            • Mosidebite
              Senior Member
              • May 2007
              • 717

              #7
              When I ran my Hoffman car 4 bar/ 2-bar the biggest thing that made it turn was RR bar angle. We ran 5 degrees to start with too but learned that when these cars roll over as far as they do with only 5 degrees of upward angle the bar levels out and sometimes ends up past level shortening the right side wheel base up and makes it TIGHT. While all that is happening you also have no drive in the right rear due to no angle left to drive off the right rear. Jump it up to 10* at ride height the next time the track is good and hooked up and go from there.

              Comment

              • thfleshman
                Junior Member
                • Oct 2011
                • 20

                #8
                I for one agree with the softer rf spring. It will help loosen the car in and better corner entry= better exit. Once you have fixed the corner entry , and your still lacking side bite, raise your straight bar on the frame side. Helps(in my oppinion) corner exit as well as long as it dont tighten it up too bad .the j bar is much smoother than a straight bar, but seems to me you can get a ton more drive and side bite with a straight bar. also you could try something if you are at the track and hurting on time if you want to loosen the car up something as simple as a deeper offset on rr (example: if you are running a 3 off swap to a 2 off) or add a wheel spacer to rr. You could also try a deeper offset on rf or wheel spacer b/c in essence that's all you basically are doing is lowering spring rate when you take the wheel further away from the spring just my 2 cents

                Comment

                • racin6mod
                  Senior Member
                  • Feb 2008
                  • 2172

                  #9
                  I agree with the others go to a j-bar and swap the front springs. I would add put the spring on the rr on a slider or coil over in front of the axle the spring on top maybe the reason the car is unpredictable from center out. that set up works well with a z-link but I had the same issue with a 4 bar set up on the rr once I switched to spring in front the car had good forward bite and the car was consistant.
                  Last edited by racin6mod; 04-15-2012, 09:35 AM.

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                  • HRJ
                    Member
                    • Dec 2008
                    • 62

                    #10
                    Are you entering the corner on the gas or off?

                    Comment

                    • powerslide
                      Senior Member
                      • May 2007
                      • 2696

                      #11
                      Originally posted by thfleshman View Post
                      I for one agree with the softer rf spring. It will help loosen the car in and better corner entry= better exit. Once you have fixed the corner entry , and your still lacking side bite, raise your straight bar on the frame side. Helps(in my oppinion) corner exit as well as long as it dont tighten it up too bad .the j bar is much smoother than a straight bar, but seems to me you can get a ton more drive and side bite with a straight bar. also you could try something if you are at the track and hurting on time if you want to loosen the car up something as simple as a deeper offset on rr (example: if you are running a 3 off swap to a 2 off) or add a wheel spacer to rr. You could also try a deeper offset on rf or wheel spacer b/c in essence that's all you basically are doing is lowering spring rate when you take the wheel further away from the spring just my 2 cents
                      Please explain to us how a softer RF spring loosens corner entry.

                      Original poster.
                      If your Right side wheel base is shorter than the left i would get that fixed and go try again. I would try it straight up to 1/4in longer on the right side. HRJ does pose a good question. If you are trying to enter on the gas on a tacky track it is very likely not wanting to turn try coming completely out of the gas.

                      It would also be nice to know your %'s and how much driver weighs

                      Comment

                      • Mosidebite
                        Senior Member
                        • May 2007
                        • 717

                        #12
                        Just a quick question...how many have ran 4 bar left with spring behind and RR on a clamped up 2- link?

                        Comment

                        • washeduptoo
                          Senior Member
                          • May 2007
                          • 1353

                          #13
                          If your talking about rr on axle tube with the spring behind lr, we have. Didn't run it very long before going 4-4, couple of races. We did run the rr bar about 10 degrees.

                          Comment

                          • OCrace2
                            Junior Member
                            • Apr 2012
                            • 2

                            #14
                            Originally posted by powerslide View Post
                            Please explain to us how a softer RF spring loosens corner entry.
                            I wouldn't say it really loosens entry...it makes the car have more sidebite which is what the poster seemed to need and from my experience gives the car a lot better feel going through the corner.
                            The reason it works>when you go into the corner, weight transfers to the front of the car. If the RF spring is softer less weight will transfer from the RR tire to the RF tire due to the spring being softer, therefore you will have less wedge during the corner and more sidebite.



                            All the suggestions seem reasonable but for the original poster....just try one thing at a time, I wouldn't suggest getting carried away changing bar lengths and your RR trail. NO QUESTION a Jbar will help smooth out the corner. Short bars make you "feel" like you are getting a lot of drive but it doesn't matter if you cant get through the corner. Let us know how it works, good luck

                            Comment

                            • Dirtrunner35
                              Senior Member
                              • May 2010
                              • 632

                              #15
                              On my stock car 3 link, I had the RR trailing arm lower on the chassis than I did on the axle to limit rear steer on that side. At least square the axle up, thrust line to the left will tighten the car on entry. A lower short bar will give you more chassis roll but less weight transfer and will make a tighter car. I had mine at 10 inches. It all depends on the rest of your set up.

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