Aero and Suspension Tuning With True Type Coilovers

Hotrodz · 07-08-2019, 09:07 PM

Quote:

Originally Posted by gomer_110

Why use other peoples' corner weights instead of just putting your car on a set of scales? I have to imagine you'd be able to find someone to let you borrow a set of scales from.

That is the problem...my car is a roller (blown motor) and there is no one in my small town that has scales. I don't think it is going to make that big a difference as the variance in all the cars is not all that great so an average will work. We all pretty much run the same spring rates anyway and it is based on the average weight of a Z.

Rusty · 07-08-2019, 10:38 PM

Quote:

Originally Posted by Spooler

That is actually a nice looking wing and I can't stand big Wangs….

You will end up with a wing.

Spooler · 07-08-2019, 11:26 PM

Quote:

Originally Posted by Rusty

You will end up with a wing.

I am trying my best not too. Tracspec vents is supposed to be the end. I want a street car, not a track car. The wife did like that wing though. It is one expensive one. Guess that's why I like it. LMAO.

Eagle · 07-09-2019, 04:15 AM

Quote:

Originally Posted by Hotrodz

Awesome!

Sent from my SM-G965U using Tapatalk

Eagle · 07-09-2019, 02:54 PM

Quote:

Originally Posted by Spooler

That is actually a nice looking wing and I can't stand big Wangs….

Honestly, there aren't many wings out there that can claim that they've been track proven in a wheel to wheel racing series like Super Taikyu on the 370Z and 350Z platforms. I think CWEST is maybe the only other one but they never made anything for the Z34. It's definitely a nice kit, I'm considering replacing the end plates with something similar to the Singular pieces Hotrodz is running.

Rusty · 07-09-2019, 06:54 PM

Quote:

Originally Posted by Eagle

Honestly, there aren't many wings out there that can claim that they've been track proven in a wheel to wheel racing series like Super Taikyu on the 370Z and 350Z platforms. I think CWEST is maybe the only other one but they never made anything for the Z34. It's definitely a nice kit, I'm considering replacing the end plates with something similar to the Singular pieces Hotrodz is running.

I believe the one APR wing was used in WC. But that wing, you have to make your own uprights.

Spooler · 07-09-2019, 07:40 PM

Quote:

Originally Posted by Eagle

Honestly, there aren't many wings out there that can claim that they've been track proven in a wheel to wheel racing series like Super Taikyu on the 370Z and 350Z platforms. I think CWEST is maybe the only other one but they never made anything for the Z34. It's definitely a nice kit, I'm considering replacing the end plates with something similar to the Singular pieces Hotrodz is running.

I like the endplates shown. You're doing right. Don't skimp, get what works and be done with it.

Hotrodz · 07-09-2019, 09:24 PM

Quote:

Originally Posted by Spooler

I like the endplates shown. You're doing right. Don't skimp, get what works and be done with it.

It is function over form. The big end plates aid in moving air more efficiently around the outside of the wing.

Eagle · 07-10-2019, 01:00 PM

Quote:

Originally Posted by Hotrodz

It is function over form. The big end plates aid in moving air more efficiently around the outside of the wing.

Those endplates seem to be pretty effective at increasing downforce without increasing drag and I'm all about that

RN SHARK · 07-20-2019, 03:42 AM

Quote:

Originally Posted by Eagle

Those endplates seem to be pretty effective at increasing downforce without increasing drag and I'm all about that

Not meaning to jack a thread (I've already sub'd to it), but Eagle, who did you order the Ings+1 wing from? I am looking into getting the regular ZPower wing with the taller uprights.

Spec Jay · 07-20-2019, 02:50 PM

Very interesting thread

If I remember right, SPL says that going from OEM bucket to true type increases effective spring rate by 1.66.

Currently running a custom front splitter with air dam with around +.5 degree AOA with 3" of protrusion. Rear wing is a Aeromotions 72" (DO NOT BUY. It works well but a **** company.) with 6 degreesl AOA. Spring rates are 14k F rear 12k in OEM bucket.

So if I went to a true type I'd need somewhere around 7.2kg springs to maintain the current balance.

Balance of the car is setup to understeer slightly right now. with a degree less in the wing it was almost perfectly balanced.

I was running these spring rates without aero and now with. I definitely feel that I could use a bit more rate purely going off my amateur seat of pants feel.

Here's SPL's spring size calculator but it's where I grabbed the info about the spring location modifier (spring motion ratio)
http://www.splparts.com/content/SpringCalculator.xls

OptionZero · 07-20-2019, 03:53 PM

what fender vents?

they look a hell of alot like the 2020 GTR NISMO's...

Hotrodz · 07-20-2019, 04:03 PM

Quote:

Originally Posted by Spec Jay

Very interesting thread

If I remember right, SPL says that going from OEM bucket to true type increases effective spring rate by 1.66.

Currently running a custom front splitter with air dam with around +.5 degree AOA with 3" of protrusion. Rear wing is a Aeromotions 72" (DO NOT BUY. It works well but a **** company.) with 6 degreesl AOA. Spring rates are 14k F rear 12k in OEM bucket.

So if I went to a true type I'd need somewhere around 7.2kg springs to maintain the current balance.

Balance of the car is setup to be slightly neutral right now. with a degree less in the wing it was almost perfectly balanced.

I was running these spring rates without aero and now with. I definitely feel that I could use a bit more rate purely going off my amateur seat of pants feel.

Here's SPL's spring size calculator but it's where I grabbed the info about the spring location modifier (spring motion ratio)
http://www.splparts.com/content/SpringCalculator.xls

Thanks for the info as it is in line with much that has been posted. I am definitely running way to much rear wing for the my GT 300. I will be starting over as Daniel recommended: " Dial the center of the wing so the angle is actually more like -5 degrees to start with (with the front slightly higher than the rear of the wing), so it’s being used at its most efficient. Then, check for high speed understeer/oversteer and adjust from there.

If it has high speed understeer, lower the front of the car. If it has oversteer, maybe take the main plain of the wing to 0 degrees (parallel to the ground). If it still oversteers, raise the front of the car to reduce front down

I enjoy following you on Instagram!

Spooler · 07-20-2019, 04:21 PM

Here are my weights with 200lbs in the drivers seat without the swaybars disconnected. They will be doing this with it disconnect to check the corner balance. She is a hefty girl now. This was a quick throw the scales under it after it was aligned.

LF: 1055 RF:971

LR: 859 RR: 848

Front: 51.27%
Rear: 45.73%

Cross weights: 49.02
Total Weight: 3733lb

Spec Jay · 07-20-2019, 06:44 PM

Quote:

Originally Posted by OptionZero

what fender vents?

they look a hell of alot like the 2020 GTR NISMO's...

I got it from a guy on instagram, username https://www.instagram.com/n00dler

Quote:

Originally Posted by Hotrodz

Thanks for the info as it is in line with much that has been posted. I am definitely running way to much rear wing for the my GT 300. I will be starting over as Daniel recommended: " Dial the center of the wing so the angle is actually more like -5 degrees to start with (with the front slightly higher than the rear of the wing), so it’s being used at its most efficient. Then, check for high speed understeer/oversteer and adjust from there.

If it has high speed understeer, lower the front of the car. If it has oversteer, maybe take the main plain of the wing to 0 degrees (parallel to the ground). If it still oversteers, raise the front of the car to reduce front down

I enjoy following you on Instagram!

I definitely have more wing than necessary too, mine is just one slot up from minimum. I need to redo my front splitter to make it protrude 5" and figure out a way to run some splitter diffusers so I can take better advantage of my wing.

https://professionalawesome.com/prod...iffusers-pair/

I like it balanced to have to slight understeer just cause it makes me a little more comfortable getting on the go pedal on corner exit. you may like it since you and I have more than enough power to correct understeer with go pedal haha.

Right now I have a 0.5" of rake. It made a huge difference from when I initially did the aero. Heres a before and after. Granted it's on the front straight but it gives a good visual about how suspension and aero settings work at balancing the car. Wing was set at the middle setting around 10 degrees front had a positive 3 or 4 on the splitterwithout the air dam and zero rake. Was terminally understeer heavy.

Thanks for the compliments!

07-20-2019, 03:53 PM	#57 (permalink)
OptionZero A True Z Fanatic Join Date: Apr 2011 Location: Sacramento Posts: 3,229 Drives: 15 370Z Nismo 6MT Rep Power: 214100	what fender vents? they look a hell of alot like the 2020 GTR NISMO's... __________________ OptionZero Build Thread

07-20-2019, 04:21 PM	#59 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,803 Drives: 2013 Nismo 370z Rep Power: 2684392	Here are my weights with 200lbs in the drivers seat without the swaybars disconnected. They will be doing this with it disconnect to check the corner balance. She is a hefty girl now. This was a quick throw the scales under it after it was aligned. LF: 1055 RF:971 LR: 859 RR: 848 Front: 51.27% Rear: 45.73% Cross weights: 49.02 Total Weight: 3733lb Rusty and Hotrodz like this. Last edited by Spooler; 07-20-2019 at 04:29 PM.

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