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-   -   This is the roll center, suspension pickup, and steering angle modification thread. (#/f/showthread.php?t=296725)

MyblackS13 01-07-2017 02:36 PM

Looks like Strange Engineering struts on the drag car, spindle integrated into the bottom of the strut.

NiSilS14 01-07-2017 03:10 PM

it's using typical promod/A-arm for front suspension. Not much left of that car that's actually 240sx. He's got a build thread on ka-t.org

http://i62.photobucket.com/albums/h8...scamera623.jpg
http://i62.photobucket.com/albums/h8...119_230521.jpg

Black R 01-08-2017 01:38 PM

Quote:

Originally Posted by TheRealSy90 (Post 6127876)
That doesn't make sense. I'm running +25mm s13 flca, GKTech RC kit and 17x10+0 up front and I don't rub on anything.

I have a similar setup and 7.5deg of caster: I rub front bumper / fender in that same area.
285's tho...

Rocket bunny front flares, so another 50mm wider than my previously rolled fenders.

MamangSorbetero 01-11-2017 01:26 PM

These are the coolest extended FLCA I've ever seen. They are also priced amazingly:

https://technotoytuning.com/sites/de...sarm1small.jpg

https://technotoytuning.com/nissan/s...arms-s13-240sx

TheRealSy90 01-11-2017 05:46 PM

This is the roll center, suspension pickup, and steering angle modification thread.
 
Look cool, and heavy. Also no inner heim joint so caster adjustment is limited. Weird that they're wider than stock.


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ka-titties 01-12-2017 08:00 AM

yeah, the lack of inner heim makes me flaccid.

the increased width would limit drift applications, but could be nice for road racing.

LuckyX2 01-12-2017 09:16 AM

Anybody see the new grip oriented knuckles from GKTech? Probably going to be selling my GKTech drift knuckles for those.

Pimpnyou204 01-19-2017 03:42 PM

Quote:

Originally Posted by LuckyX2 (Post 6154717)
Anybody see the new grip oriented knuckles from GKTech? Probably going to be selling my GKTech drift knuckles for those.



I'm about to purchase their front set and they only sell the V3 on their site? Am I missing something? PBM came out with a new set is that what you mean?

derass 01-19-2017 07:26 PM

In-cabin adjustable rear sway bar on Chris Forsberg's Z. I'm guessing there's a cam profile inside that tube.

https://scontent.fybz1-1.fna.fbcdn.n...36&oe=590C8652

derass 01-19-2017 09:37 PM

Acostal Motorsport Development kit. First I've ever seen of it.

https://scontent.fybz1-1.fna.fbcdn.n...75&oe=591C7FEF

ka-titties 01-20-2017 07:10 AM

Quote:

Originally Posted by Pimpnyou204 (Post 6157111)
I'm about to purchase their front set and they only sell the V3 on their site? Am I missing something? PBM came out with a new set is that what you mean?

They posted it on their Instagram. They're not for sale yet.

PoorMans180SX 01-20-2017 07:16 AM

Quote:

Originally Posted by derass (Post 6157179)
In-cabin adjustable rear sway bar on Chris Forsberg's Z. I'm guessing there's a cam profile inside that tube.

https://scontent.fybz1-1.fna.fbcdn.n...36&oe=590C8652

IIRC, an adjustable swaybar like that works because as you rotate that flat endlink, it's resistance to bending changes. No need for a cam profile.

Quote:

Originally Posted by derass (Post 6157243)
Acostal Motorsport Development kit. First I've ever seen of it.

Yeah it's been out for a while. The cost is a little exhorbitant IMHO, but it's interesting to see a caster-biased kit. Stewy loves caster haha.

One of these days I'll update the OP, I swear, hahah.

slider2828 01-20-2017 12:08 PM

Quick question guys. I am putt on my front driftworks knuckly. The top of the spindle is hitting the bottom bracket of the coilover ever so slightly.

I have two options,

1. flip the coilover bracket

2. grind a little of the knuckle <1.5mm on the edge. (I went with this one, but the coilover bolts on a little tight to the knuckle...

What you guys think?

Thanks!

Razi 01-20-2017 12:45 PM

Quote:

Originally Posted by LuckyX2 (Post 6154717)
Anybody see the new grip oriented knuckles from GKTech? Probably going to be selling my GKTech drift knuckles for those.

I'm definitely getting a set.
It'd be cool if they made the steering arm a touch shorter to speed up the steering a tiny bit.:2f2f:

TheRealSy90 01-20-2017 09:33 PM

So get the drift knuckles lol.


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ka-titties 01-22-2017 11:03 AM

Quote:

Originally Posted by TheRealSy90 (Post 6157577)
So get the drift knuckles lol.


Sent from my iPhone using Tapatalk

The ackerman setup on the drift knuckles doesn't work well for road racing.

LuckyX2 01-23-2017 06:40 AM

I currently have the GKTech drift knuckles but I autocross, not drift. They're better than stock knuckles for me but the grip knuckles would be even better in my case. If you want the extra lock and adjusted ackerman, go drift knuckles, if you just want the fixed geometry, go grip knuckles.

Slider, I'd say you're fine having ground off a bit of the knuckle, those things are pretty beefy and 1-2mm isn't gonna change much.

Razi 01-23-2017 01:53 PM

Quote:

Originally Posted by TheRealSy90 (Post 6157577)
So get the drift knuckles lol.


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Umm.
No.

I don't want fast as hell steering while going 100+mph.

PoorMans180SX 01-23-2017 02:08 PM

Quote:

Originally Posted by ka-titties (Post 6157996)
The ackerman setup on the drift knuckles doesn't work well for road racing.

Where are you getting this?

Quote:

Originally Posted by Razi (Post 6158370)
Umm.
No.

I don't want fast as hell steering while going 100+mph.

You've never driven a car with shorter tie rod pickups have you? You still have 2.25 turns lock to lock, it's nothing crazy.

Turb 01-29-2017 12:38 AM

Been looking into getting an angle kit for my s13, and came across the "Unicorn Angle Kit"
LINK:http://www.driftknuckles.com/product...corn-angle-kit

Seems to be a pretty basic setup just seems the rank would over center like a mofo, can't seem to find any reviews or anything online of it, any feedback?

gaz_moose 01-29-2017 09:14 AM

^^if they have cut and shut the knuckles like we do over here then you would want to move the rack forward an inch and not a few MM like those offset bushes do^^.

Pimpnyou204 01-30-2017 05:28 PM

I've searched Silvia and google and can't quite get an answer. I've messaged gktech and pbm and they both vary from answers.

The pbm top camber plate (16mm) and spacer (7mm) according to pbm are able to be used and would avoid cutting of the strut top.

According to messsges from gktech they say you will need their top plate (20mm) and if it's an s13 a 8mm spacer in order to not cut the strut top.

Short story pbm says 23 mm clears gktech says 28mm has anyone actually purchased either of these sets would like to elaborate on which is the correct one or what makes them vary in size other than I assume the allowable clearance of the dampener screw top.

TheRealSy90 01-31-2017 08:37 PM

They're probably both correct due to design differences between each brand's plate. PBM's requires the 23mm to clear and GkTech requires 28 like they said. Doesn't mean either is incorrect it means they're designed differently.


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xpinoyxmk 02-12-2017 09:24 AM

Who does rack relocations in the states?! Price helps too!

derass 02-12-2017 01:17 PM

Quote:

Originally Posted by Razi (Post 6158370)
I don't want fast as hell steering while going 100+mph.

Quote:

Originally Posted by PoorMans180SX (Post 6158376)
...a car with shorter tie rod pickups... still [has] 2.25 turns lock to lock, it's nothing crazy.

Agreed. I had MA Motorsports knuckles and a HICAS steering rack. There was a ton of angle (too much actually); but honestly, the steering response didn't feel any different than stock. Not twitchy or anything.

Also, I know these are terribly wrong, but not sure exactly how. I figured you guys would have fun tearing them apart.

http://i.imgur.com/LKiIvlI.jpg

MyblackS13 02-12-2017 02:13 PM

Those arms hurt my eyes. They will sit flatter/lower like they are correcting roll center, but the centerline of the ball joint to the centerline of the spindle is all that matters. Plus putting the kink in the arm introduces a potential bending stress since there is no longer metal in a straight line between the ball joint and the pivot pt of the bushing.

stuckonfresh 02-12-2017 04:15 PM

Quote:

Originally Posted by xpinoyxmk (Post 6165419)
Who does rack relocations in the states?! Price helps too!

The guys at HeatMaker helped me with a rack relocation. Moves rack brackets 25mm forwards.
225

Link:
http://heatmaker.bigcartel.com/produ...nt-crossmember

PoorMans180SX 02-27-2017 02:22 PM

Just FYI guys, over the course of this week I'm going to be overhauling the original posts, so if they're all jacked up for a bit, you now know why, haha.

PoorMans180SX 03-03-2017 08:34 AM

Driftworks just released pre-orders for Geomaster V3! compilation with wisefab. Drift and grip settings on front knuckle. New rear knuckle with revised kinematics.

http://i.imgur.com/4LIk55y.jpg

http://i.imgur.com/N8AqFLvh.jpg

http://i.imgur.com/SyaMdvDh.jpg

http://i.imgur.com/8tBKroqh.jpg

PoorMans180SX 03-04-2017 01:36 PM

First two posts updated. Let me know what you guys think, or if you have any input!


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