Street Touring Hatchback (STH) discussion/setup

[bfury5]

For those who are following my progress, I've updated my mods list on page 1 so you can see what I am showing up to the 2021 Solo Nationals with.

See you out there! Jealous that your commute won't be nearly as bad

 

[pseudorealityx]

I have enough camber that the front end gets a little squirrelly under really heavy braking. It's manageable, but also noticeable.

And your current camber/caster settings?

 

[odessa.filez]

I have just around -5 f, -2 r
have not had issues with corner exit, but I'm a piggybacked 1.8 so not as much power as some. I haven't had brake issues but not racing fast courses either.

I'd like to try more up front but haven't figured out how yet. Plan to get more in the back but don't know what stock arms allow.

 

[GTIfan99]

How close is the strut mount to the inside of the body? I was going to slot to add a little more but my camber plate is about to leave the flat part of the body

I'm on the Eurosport camber kit and slotted to get more neg camber. I have enough room.

 

[xXDavidCXx]

See you out there! Jealous that your commute won't be nearly as bad

I don’t even think I can call it a commute, at about 50 min.

 

[xXDavidCXx]

I have just around -5 f, -2 r
have not had issues with corner exit, but I'm a piggybacked 1.8 so not as much power as some. I haven't had brake issues but not racing fast courses either.

I'd like to try more up front but haven't figured out how yet. Plan to get more in the back but don't know what stock arms allow.

Rear is between -2.5 to -3. I have SPC rear uppers and the max is -3

 

[odessa.filez]

Rear is between -2.5 to -3. I have SPC rear uppers and the max is -3

and the SPC is adjustable, correct?

 

[xXDavidCXx]

and the SPC is adjustable, correct?

Yes, adjusted to max.

 

[xXDavidCXx]

Rear is between -2.5 to -3. I have SPC rear uppers and the max is -3

@ my ride height, others may get more at a lower height.

 

[00Zero]

I got an extra .5 with slotting and I'm going to try to get a little more.

On my setup, I'm going for -2.8.

How much slotting did you do to gain the -0.5deg camber?

 

[GTIfan99]

How much slotting did you do to gain the -0.5deg camber?

I don't remember, but I'm planning on doing Koni install this weekend, so I can measure then.

 

[00Zero]

I don't remember, but I'm planning on doing Koni install this weekend, so I can measure then.

Thanks for checking.

I don't know if it is much use but I did get some damping info straight from koni on the sports. This is at full soft, full hard would be double the rebound with no change to the compression.

8741 1571Sport
Tested @.13m/sec
Compression – 380N
Rebound – 650N

Tested @ .33m/sec
Compression – 500N
Rebound – 1000N


8240 1297Sport
Tested @.13m/sec
Compression – 310N
Rebound – 750N

Tested @ .33m/sec
Compression – 450N
Rebound – 1150N

​

Based on my novice back of the envelope calcs and assuming the APR springs are 20% stiffer than stock. (210 and 275lb/in f&r)

The fronts adjusted to about mid range and the rears on full soft should get you about 70% of critical at 3-5in/s all around. I know 65% is usually the target but we are limited by soft on the rears, but the fronts should be easy to turn lower for ride quality while adjustment in the rear is a huge PIA.

The rears seem to have pretty high rebound damping forces at full soft which is probably why some say the yellows are rougher then the Bilstein's (i assume no-one runs them at full soft)

-Jonathan

 

[pseudorealityx]

-3.2 front
-2.7 rear
between 9.1-9.5 caster
zero toe both ends

~13.375" from hub center to fender in front. 13.25" from hub to fender in rear.

 

[bfury5]

And your current camber/caster settings?

I forget what caster is, camber is ~3.6 up front

 

[pseudorealityx]

FYI...
2017 SE, trunk junk pulled out, but still stock cat-back, battery, and a hitch on it. That's with the Apex 17x9s and RT660's
3160 lbs, ~62/38 weight distribution

Got my cross weights too 51/49... close enough.