Recent picture of my car at a lapping day, is this rear roll normal? - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Suspension, Brakes, Drivetrain discuss the wondrous effects of boost and your miata...

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 08-14-2013, 10:34 AM   #1
Junior Member
Thread Starter
 
Join Date: Apr 2012
Posts: 65
Total Cats: -2
Default Recent picture of my car at a lapping day, is this rear roll normal?

https://fbcdn-sphotos-a-a.akamaihd.n...15384301_n.jpg



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?)

Last edited by Braineack; 08-14-2013 at 01:12 PM.
Hungry-R is offline   Reply With Quote
Old 08-14-2013, 11:11 AM   #2
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,093
Total Cats: 90
Default

That looks weird. Something doesnt seem right. I'll try to find a picture of my car from the same angle later.
Leafy is offline   Reply With Quote
Old 08-14-2013, 11:17 AM   #3
Junior Member
Thread Starter
 
Join Date: Apr 2012
Posts: 65
Total Cats: -2
Default

this is a mid exit of a right hand corner before straight around 50mph../
Hungry-R is offline   Reply With Quote
Old 08-14-2013, 12:27 PM   #4
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,038
Total Cats: 407
Default

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.
y8s is offline   Reply With Quote
Old 08-14-2013, 12:40 PM   #5
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,093
Total Cats: 90
Default

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.



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.
Attached Thumbnails
Recent picture of my car at a lapping day, is this rear roll normal?-7818104682_8cc19012a6_o.jpg  
Leafy is offline   Reply With Quote
Old 08-14-2013, 01:11 PM   #6
Elite Member
iTrader: (21)
 
Join Date: Jun 2007
Location: Rochester, NY
Posts: 5,689
Total Cats: 560
Default

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.
rleete is offline   Reply With Quote
Old 08-14-2013, 02:28 PM   #7
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,038
Total Cats: 407
Default

banked turn?
y8s is offline   Reply With Quote
Old 08-14-2013, 02:31 PM   #8
Junior Member
iTrader: (1)
 
Join Date: Aug 2009
Posts: 48
Total Cats: 0
Default

That corner is also pretty bumpy. Any chance of a video or a few other pics at that corner?
SmokeSR is offline   Reply With Quote
Old 08-14-2013, 02:42 PM   #9
Junior Member
Thread Starter
 
Join Date: Apr 2012
Posts: 65
Total Cats: -2
Default

here are the shots from the corner







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
Attached Thumbnails
Recent picture of my car at a lapping day, is this rear roll normal?-klde.jpg   Recent picture of my car at a lapping day, is this rear roll normal?-xz44.jpg   Recent picture of my car at a lapping day, is this rear roll normal?-xln1.jpg   Recent picture of my car at a lapping day, is this rear roll normal?-6zut.jpg   Recent picture of my car at a lapping day, is this rear roll normal?-v6bo.jpg  

Hungry-R is offline   Reply With Quote
Old 08-14-2013, 02:49 PM   #10
Junior Member
Thread Starter
 
Join Date: Apr 2012
Posts: 65
Total Cats: -2
Default

for ***** 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

Attached Thumbnails
Recent picture of my car at a lapping day, is this rear roll normal?-cscs-2013-round-1-season-opener-gp_amf-155.jpg  
Hungry-R is offline   Reply With Quote
Old 08-14-2013, 03:19 PM   #11
Senior Member
iTrader: (3)
 
Join Date: Aug 2005
Location: Gig Harbor, WA
Posts: 504
Total Cats: 3
Default

Was the ride height set with you in the car? If not, it looks normal considering there are two of you in the car.
TurboRoach is offline   Reply With Quote
Old 08-14-2013, 03:42 PM   #12
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,899
Total Cats: 1,792
Default

where's can i buy the flesh colored helmet?
Braineack is offline   Reply With Quote
Old 08-14-2013, 03:48 PM   #13
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,093
Total Cats: 90
Default

Quote:
Originally Posted by Braineack View Post
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.
Leafy is offline   Reply With Quote
Old 08-14-2013, 03:50 PM   #14
Junior Member
Thread Starter
 
Join Date: Apr 2012
Posts: 65
Total Cats: -2
Default

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.
Hungry-R is offline   Reply With Quote
Old 08-14-2013, 03:56 PM   #15
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,899
Total Cats: 1,792
Default

shouldnt the policy be: helmets for all or no driving?
Braineack is offline   Reply With Quote
Old 08-14-2013, 04:11 PM   #16
Elite Member
iTrader: (8)
 
Join Date: Dec 2008
Location: Kingston, Ontario
Posts: 2,791
Total Cats: 71
Default

go to the gym.

corner with you in it will squat less going around a corner.
shlammed is offline   Reply With Quote
Old 08-14-2013, 04:37 PM   #17
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

Looks fine.
hustler is offline   Reply With Quote
Old 08-14-2013, 05:34 PM   #18
Junior Member
iTrader: (1)
 
Join Date: Aug 2006
Location: Ellicott City, MD
Posts: 458
Total Cats: 6
Default

Quote:
Originally Posted by shlammed View Post
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?
MicaCeli is offline   Reply With Quote
Old 08-15-2013, 01:03 AM   #19
Junior Member
 
Join Date: Apr 2013
Location: toronto
Posts: 124
Total Cats: 7
Default

This is tmp/cayuga. Picture is normal as there are actually 2 massive dips on that corner. Lap times?
endura is offline   Reply With Quote
Old 08-15-2013, 08:37 AM   #20
Elite Member
iTrader: (12)
 
Join Date: Sep 2007
Location: Charlotte, NC
Posts: 6,868
Total Cats: 66
Default

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.

Attached Thumbnails
Recent picture of my car at a lapping day, is this rear roll normal?-img_6731.jpg  
Doppelgänger is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
91 1.6l turbo complete part out. Tony the Tiger Miata parts for sale/trade 63 12-29-2016 03:23 AM
Prepping my '95 for track asmasm Build Threads 82 05-26-2016 05:37 PM
elesjuan's mediocre 95 Miata adventure (google fiber edition) elesjuan Build Threads 8 02-16-2016 09:36 PM
Turbo 1995 Miata Low mileage Clean Tekel Cars for sale/trade 29 02-05-2016 05:16 PM
Re-Spring Tein FLEX or replace? Mazdaspeeder Suspension, Brakes, Drivetrain 21 10-03-2015 07:45 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 02:33 AM.