Announcement

Collapse
No announcement yet.

Front spindle discussion

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Front spindle discussion

    Hello friends -- figured I'd start a thread as I have a question and looking for any feedback.

    Still getting some pad knockback from my brakes that I can't chase down. I've done new wheel bearings at all 4 corners now to try and fix it, and no change. Only have a long pedal when the car is really loaded up in a corner. The only thing that's not 100% right with my setup is that the rear brake calipers are shimmed a touch offset for increased clearance to the spoke. This is a f/r Core4 setup btw.

    Local motorsport guy says that spindle flex is a thing he's seen in his 30 years of building racecar things, and when I told him my spindles were cut&weld (courtesy of logr on here from many many years ago) he suggested that that is probably the issue I'm facing.

    With that said I'm considering my options (which is awesome that there are so many).

    First up is the Gktech drift/grip knuckle. I like this because GKTech has good customer service and I want quicker steering as it's one of my favorite elements of what I have now.
    At Gktech we now have three different variants of our world-renowned front drop knuckles! All of them are designed and build similar, sharing the following;- Light weight- Robust design- S13/ S14 variations- 4130 Chromoly- CMM measured, CAD designed and FEA tested- E-coated (Electrophoresis Coating)We have tailored the knuckles to suit all types of motorsport that your S-Chassis is used for, the options we have are… Grip knucklesThese have been specifically designed for Grip/ Time-Attack racing in mind, we have lowered the balljoint height 1.96' (50mm) for roll center correction while also lowering the steering mount 2.51' (64mm) for bump steer correction.Being that they are Grip/ Time-Attack specific we have kept the OEM ackerman and OEM steering arm length, in the factory positioning.- Ball joint height lowered 1.96' (50mm)- Steering mount lowered 2.51' (64mm)- Lightweight (S13 version is 6.9lbs and S14/S15 is 7.2lbs)- Provision for ABS sensor NOTE: Due to the 2.51' (64mm) of bump steer correction some tie rods may interfere with the inside of your rim. This is entirely dependent on both the inside diameter of the rim and the length/type of tie rod that you are running however as a general rule a 17" rim or larger will be required.From there, we have the hybrid of the Grip knuckle and the Drift knuckle, which is the;Drift/Grip knucklesThese have the best of both worlds, with the driveability that the grip knuckles have, the balljoint height has been lowered 1.96' (50mm) for roll centre and bump steer correction while also having around up to 60 degrees of steering lock available.They have been designed with a linear steering response making them super smooth and predictable to drive with. They are still a super competitive knuckle to drive on in terms of drifting, but just don’t have the extra edge the pro knuckles do (as seen below).This knuckle is perfect for the all-rounder, who enjoys both Drifting and Grip/Time-Attack.To get the maximum amount of rack travel and see the full potential with these knuckles we recommend the bolt on rack spacers if your rack is moved forward, otherwise, you may get steering bind. If it is not moved forward and is not something you are able to do, we do recommend the offset rack spacers which do move the inner tie rods forward, which mitigates bind and still offer the rack travel needed.- Ball joint height lowered 1.96' (50mm)- Lightweight (S13 version is 6.6lbs and S14/S15 is 7lbs)- Provision for ABS sensorLastly we have;Pro Drift KnucklesThese knuckles have specifically been designed to be used for drifting only.These bad boys have had their ball joint height lowered 1.96' (50mm) for roll centre and bump steer correction and are able to achieve around 70 degrees of steering lock with ease!They are not for the faint hearted being our pro knuckle they feature caster trail and adjustable Ackerman, that's right, adjustable Ackerman so that you can really dial in your front end and be unstoppable.As mentioned above, to get the maximum amount of rack travel and see the full potential with these knuckles we recommend the bolt on rack spacers if your rack is moved forward, otherwise, you may get steering bind. If it is not moved forward and is not something you are able to do, we do recommend the offset rack spacers which do move the inner tie rods forward, which mitigates bind and still offer the rack travel needed.These knuckles are too awesome to have provision for ABS, this does mean there is no provision for ABS.- Ball joint height lowered 1.96' (50mm)- Lightweight (S13 version is 6.4lbs and S14/S15 is 6.6lbs)- Offset caster trail- Adjustable Ackerman All the listed knuckles are best suited to be used with our Super Lock LCA's which can be seen here;https://us.gktech.com/cnc-machined-4130-chromoly-super-lock-lower-control-arms If you were planning on purchasing the Super Lock LCA's with the knuckles listed above, we do have them in a 15% discounted combo as seen here;https://us.gktech.com/240sx-super-lock-angle-kit-combo-15-off Want more technical information, product benefits and a look into the design process? Click here: https://blog.gktech.com/blog/gktech-s-chassis-steering-drop-knuckles/


    Second up is the FDF Knuckle which uses a 350z wheel bearing -- love this approach. Not sure about the track width dicussion as I have literally no room to give in pushing the wheel out further lol:


    Open to whatever feedback or options anyone has.

    Thank you!




  • #2
    I picked up those gktech knuckles a while ago for the s13 and they seem to be quality.

    Comment


    • #3
      I've been running S13 Grip knuckles and don't have any complaints. That being said, I literally just bought second hand, new open box S14 drift/grip knuckles to replace my S13 grip versions. Because
      1. I want the quicker steering
      2. S14 hubs come with tone rings still


      I've looked at the FDF knuckles before and wasn't too intrigued by them. That much increased track width is kind of a deal breaker for me. The 350z wheel bearings seem like the best bonus of going that route.
      SM 63 KA-t 470hp 480tq G30-660 A2W IC

      Comment


      • #4
        I haven't heard back from them on clarifying if they actually add the width or not, but I assume they do.

        Comment


        • #5
          The FDF knuckles look intriguing... I had the same idea to use 350z front hubs (since I have spares for my G35) with a fabricated knuckle, but I ended up buying the GKTech grip (S14) knuckles and modifying them (more roll center correction and slightly more ackerman due to the corresponding bumpsteer adjustment). They've been pretty solid so far and are a lot better than the modded OE knuckles I had prior.

          Comment


          • #6
            Thanks PJ, appreciate your input.

            I think I'll just pull the trigger on those.

            I am sad we didn't get to chat at Nats -- next year for sure! Congrats on a great showing for panda.

            Comment

            Working...
            X