Miata Turbo Forum - Boost cars, acquire cats.

Miata Turbo Forum - Boost cars, acquire cats. (https://www.miataturbo.net/)
-   Suspension, Brakes, Drivetrain (https://www.miataturbo.net/suspension-brakes-drivetrain-49/)
-   -   Recent picture of my car at a lapping day, is this rear roll normal? (https://www.miataturbo.net/suspension-brakes-drivetrain-49/recent-picture-my-car-lapping-day-rear-roll-normal-74428/)

Hungry-R 08-14-2013 09:34 AM

Recent picture of my car at a lapping day, is this rear roll normal?
 
https://fbcdn-sphotos-a-a.akamaihd.n...15384301_n.jpg

https://www.miataturbo.net/attachmen...ine=1376496755

I just saw this picture from recent track day, and the rear driver side tire is being tucked really bad giving more camber than front. Is this normal?

I am running xida 700/400, front rb thick tubular on soft, super miata race alignment, and 4.25 ride height front and rear.


Also, when you start setting your dampers, do you guys start at softest settings and start limiting traction by making them harder or do you start middle of the adjustable range? (right now, i start at 3/4 hardness and then if I feel that my car is pushing, i soften front and vice versa, is this how you guys adjust your dampers as well?)

Leafy 08-14-2013 10:11 AM

That looks weird. Something doesnt seem right. I'll try to find a picture of my car from the same angle later.

Hungry-R 08-14-2013 10:17 AM

this is a mid exit of a right hand corner before straight around 50mph../

y8s 08-14-2013 11:27 AM

If you're at max cornering under acceleration, you're going to compress the outside rear wheel.

What suspension mods do you have? And keep in mind that if you prevent that movement, you may be losing grip and going slower.

Leafy 08-14-2013 11:40 AM

1 Attachment(s)
To compare, here's the closest picture of my car that I have, xidas 650/400 rb race bar on soft, no rear bar, 4.25/4.5, something like the 949 alignment, 85k miles rubber stock bushings. About a 40-50mph turn, sharper than yours and I'm almost to the middle of the turn.

https://www.miataturbo.net/attachmen...ine=1376494859

I think it might just be that 1/4" ride height difference. I've never been that low in the rear and I've never had that much negative camber in a turn.

rleete 08-14-2013 12:11 PM

Yeah, but it looks like your DS rear is lifting, while his outside tire is still (mostly) planted. I'd say that was the result of bar vs. no bar in rear.

y8s 08-14-2013 01:28 PM

banked turn?

SmokeSR 08-14-2013 01:31 PM

That corner is also pretty bumpy. Any chance of a video or a few other pics at that corner?

Hungry-R 08-14-2013 01:42 PM

5 Attachment(s)
here are the shots from the corner
https://www.miataturbo.net/attachmen...ine=1376502175
https://www.miataturbo.net/attachmen...ine=1376502175
https://www.miataturbo.net/attachmen...ine=1376502175
https://www.miataturbo.net/attachmen...ine=1376502175
https://www.miataturbo.net/attachmen...ine=1376502175


Also , can you guys share how you dial in your dampening adjustments?
The turn is not banked and I have the rusty stock rear sway bar in place

Hungry-R 08-14-2013 01:49 PM

1 Attachment(s)
for shits and giggles, here is a picture of my car at the same corner (entry portion of the double apex corner) Before rb sway bar and on stock suspension

https://www.miataturbo.net/attachmen...ine=1376502553

TurboRoach 08-14-2013 02:19 PM

Was the ride height set with you in the car? If not, it looks normal considering there are two of you in the car.

Braineack 08-14-2013 02:42 PM

where's can i buy the flesh colored helmet?

Leafy 08-14-2013 02:48 PM


Originally Posted by Braineack (Post 1043598)
where's can i buy the flesh colored helmet?

Shhh, I really want to take a 3d -> 2d picture of my head and have it printed as a vinyl wrap for my helmet.

Hungry-R 08-14-2013 02:50 PM

first time for my buddy to come to track, the organizer's policy say helmets for all heads or no helmets. Unfortunately we had to choose the latter.

Braineack 08-14-2013 02:56 PM

shouldnt the policy be: helmets for all or no driving?

shlammed 08-14-2013 03:11 PM

go to the gym.

corner with you in it will squat less going around a corner.

hustler 08-14-2013 03:37 PM

Looks fine.

MicaCeli 08-14-2013 04:34 PM


Originally Posted by shlammed (Post 1043611)
go to the gym.

corner with you in it will squat less going around a corner.

What are the weights of the driver and pass?

endura 08-15-2013 12:03 AM

This is tmp/cayuga. Picture is normal as there are actually 2 massive dips on that corner. Lap times?

Doppelgänger 08-15-2013 07:37 AM

1 Attachment(s)
It's hard to compare Leafy's picture to yours as he is not under hard acceleration exiting the turn like you are. Depending on your whp number, the track, your tires and your swaybar...it's completely comprehensible to see your car behaving like that.

Also, what is the static ride height of your car?


About the only pic I could find of me under acceleration on exit is at an auto-X (appx 40-45mph)- I'm definitely more level, but I am also running Goodwin Special Ohlins DFVs, Whiteline rear sway and Kumho V710 tires.

https://www.miataturbo.net/attachmen...ine=1376567139


All times are GMT -4. The time now is 12:19 AM.


© 2024 MH Sub I, LLC dba Internet Brands