Race Prep Miata race-only chat.
Sponsored by:
Sponsored by:

? for those with 949 big grip kit

Thread Tools
 
Search this Thread
 
Old 09-21-2014, 01:30 PM
  #21  
Supporting Vendor
iTrader: (3)
 
emilio700's Avatar
 
Join Date: May 2005
Posts: 7,322
Total Cats: 2,369
Default

Need exact alignment, ride heights and in car video to diagnose.
__________________


www.facebook.com/SuperMiata

949RACING.COM Home of the 6UL wheel

.31 SNR
emilio700 is offline  
Old 09-22-2014, 08:06 PM
  #22  
Senior Member
 
mx5-kiwi's Avatar
 
Join Date: Dec 2010
Location: Auckland, NZ
Posts: 992
Total Cats: 57
Default

949 alignment is quite aggressive on turn in. I would think if you don't have much seat time that this would be the best method of resolving the problem.

Also checking tyre pressures, tyre heat for Inner, Middle and Out.

This way you can start analysing your setup a bit more. Maybe too much camber, maybe too little camber etc...

BUT I agree with 14 mm bar being about right. I run a 16 and have had to compensate a bit as I was getting MAJOR oversteer in to corners..

A 14mm would be about perfect for my car too.
mx5-kiwi is offline  
Old 09-25-2014, 11:40 AM
  #23  
Junior Member
Thread Starter
iTrader: (3)
 
tomiboy's Avatar
 
Join Date: Oct 2011
Location: Naperville
Posts: 372
Total Cats: 3
Default

Originally Posted by emilio700
Need exact alignment, ride heights and in car video to diagnose.
I think I still have the exact alignment spec. I'll look.

I'll measure ride height.

Does the video have to show me going off? I have only one and it's on a wet track so not sure how worthwhile that is. Plus need to put it on youtube so I can link it here and I'm not much of a computer guy. lol
tomiboy is offline  
Old 09-25-2014, 11:58 AM
  #24  
Elite Member
iTrader: (2)
 
Mobius's Avatar
 
Join Date: May 2008
Location: Portland, Oregon
Posts: 3,468
Total Cats: 365
Default

We could tell you what you did wrong. In explicit excruciating detail

It would still be useful to see.
Mobius is offline  
Old 09-25-2014, 01:10 PM
  #25  
Elite Member
iTrader: (5)
 
Seefo's Avatar
 
Join Date: Dec 2010
Location: Raleigh, NC
Posts: 1,961
Total Cats: 48
Default

Originally Posted by tomiboy
I think I still have the exact alignment spec. I'll look.

I'll measure ride height.

Does the video have to show me going off? I have only one and it's on a wet track so not sure how worthwhile that is. Plus need to put it on youtube so I can link it here and I'm not much of a computer guy. lol
haha, pretty sure we have all gone off. I even have a video of me tapping a tirewall...
(turn to 22:22)
.


No one will make fun of you for it.
Seefo is offline  
Old 09-25-2014, 07:49 PM
  #26  
Junior Member
Thread Starter
iTrader: (3)
 
tomiboy's Avatar
 
Join Date: Oct 2011
Location: Naperville
Posts: 372
Total Cats: 3
Default

I found my alignment:

Front camber -1.9
front caster 4.5
toe 0
pinch point 5"
wheel to fender 12 3/4"

rear camber -1.8
toe 0
pinch point 5 1/4"
wheel to fender 13"
tomiboy is offline  
Old 09-25-2014, 08:24 PM
  #27  
Elite Member
iTrader: (4)
 
hornetball's Avatar
 
Join Date: Mar 2008
Location: Granbury, TX
Posts: 6,301
Total Cats: 696
Default

You're running it pretty high considering your 700/400 spring rates.
hornetball is offline  
Old 09-25-2014, 10:37 PM
  #28  
Supporting Vendor
iTrader: (3)
 
emilio700's Avatar
 
Join Date: May 2005
Posts: 7,322
Total Cats: 2,369
Default

Originally Posted by tomiboy
I found my alignment:

Front camber -1.9
front caster 4.5
toe 0
pinch point 5"
wheel to fender 12 3/4"

rear camber -1.8
toe 0
pinch point 5 1/4"
wheel to fender 13"
Try running OEM rear toe and lower rear 1/8"
__________________


www.facebook.com/SuperMiata

949RACING.COM Home of the 6UL wheel

.31 SNR
emilio700 is offline  
Old 09-26-2014, 03:57 PM
  #29  
Junior Member
Thread Starter
iTrader: (3)
 
tomiboy's Avatar
 
Join Date: Oct 2011
Location: Naperville
Posts: 372
Total Cats: 3
Default

This from a couple of weeks ago. I got one good session in between the rain. The first 3:30 minutes are me getting ready, so you can skip that, just after 15:00 minutes I go off. Be gentle

tomiboy is offline  
Old 09-26-2014, 09:46 PM
  #30  
Supporting Vendor
iTrader: (3)
 
emilio700's Avatar
 
Join Date: May 2005
Posts: 7,322
Total Cats: 2,369
Default

Originally Posted by tomiboy
This from a couple of weeks ago. I got one good session in between the rain. The first 3:30 minutes are me getting ready, so you can skip that, just after 15:00 minutes I go off. Be gentle
Car looks fine. Looks like you were still on the brakes too late and hard (too much trail braking) and spun it. Your reaction wasn't severe enough. It's good to steer slowly into the turn but when you think it's letting go, your corrections should be violent. You could have caught the half spin if you had snapped full lock left the instant you felt it going around.

I notice your heel-toe's are hit and miss. Sometimes perfect, sometimes clunky, sometimes no heel-toe. It's important to be consistent with that to have your corner entries and trail braking overlapping smoothly. In teh turn you spun, you were not overlapping smoothly and hung onto the brakes too long.

Because you have some power, I'd suggest the OEM toe in on rear and lower rear 1/8". Car looks good otherwise.
__________________


www.facebook.com/SuperMiata

949RACING.COM Home of the 6UL wheel

.31 SNR
emilio700 is offline  
Old 09-26-2014, 10:13 PM
  #31  
Junior Member
Thread Starter
iTrader: (3)
 
tomiboy's Avatar
 
Join Date: Oct 2011
Location: Naperville
Posts: 372
Total Cats: 3
Default

Thanks!!
tomiboy is offline  
Old 09-27-2014, 07:51 PM
  #32  
Elite Member
iTrader: (4)
 
hornetball's Avatar
 
Join Date: Mar 2008
Location: Granbury, TX
Posts: 6,301
Total Cats: 696
Default

Seat time my friend. Lots and lots of seat time.
hornetball is offline  
Old 09-27-2014, 07:55 PM
  #33  
Elite Member
iTrader: (4)
 
Efini~FC3S's Avatar
 
Join Date: Sep 2006
Location: Charlotte, NC
Posts: 3,309
Total Cats: 98
Default

Originally Posted by hornetball
Seat time my friend. Lots and lots of seat time.
THIS

And what Emilio said. A little toe-in in the rear and lowering the rear end of the car should make it more to your liking.
Efini~FC3S is offline  
Old 09-27-2014, 09:25 PM
  #34  
Junior Member
iTrader: (1)
 
circuitmstr74's Avatar
 
Join Date: Aug 2013
Posts: 223
Total Cats: 13
Default

Originally Posted by hornetball
Seat time my friend. Lots and lots of seat time.
Your biggest benefit would be to hire a coach.
circuitmstr74 is offline  
Old 09-27-2014, 11:41 PM
  #35  
Supporting Vendor
iTrader: (3)
 
emilio700's Avatar
 
Join Date: May 2005
Posts: 7,322
Total Cats: 2,369
Default

Originally Posted by circuitmstr74
Your biggest benefit would be to hire a coach.
I would put one day with a good coach up against 100 trackdays hacking around by yourself any day. Coaching, coaching, coaching. Even (and especially) pros have coaches.
__________________


www.facebook.com/SuperMiata

949RACING.COM Home of the 6UL wheel

.31 SNR
emilio700 is offline  
Old 09-28-2014, 02:37 AM
  #36  
Junior Member
iTrader: (1)
 
circuitmstr74's Avatar
 
Join Date: Aug 2013
Posts: 223
Total Cats: 13
Default

yup
circuitmstr74 is offline  
Old 09-28-2014, 02:59 AM
  #37  
Elite Member
iTrader: (2)
 
Mobius's Avatar
 
Join Date: May 2008
Location: Portland, Oregon
Posts: 3,468
Total Cats: 365
Default

Seat time will give you the reflexes to drive the car how you want. A coach will get you to understand what exactly it is you want the car to do, and where, on that particular track.
Mobius is offline  
Old 09-28-2014, 04:21 PM
  #38  
Junior Member
Thread Starter
iTrader: (3)
 
tomiboy's Avatar
 
Join Date: Oct 2011
Location: Naperville
Posts: 372
Total Cats: 3
Default

Originally Posted by circuitmstr74
Your biggest benefit would be to hire a coach.
Funny...I was thinking about doing this. There are a couple of veteran ex-professional race car drivers who offer coaching at my home track at a reasonable price!

Thanks to all!!
tomiboy is offline  
Old 09-28-2014, 06:04 PM
  #39  
Senior Member
iTrader: (1)
 
spoolin2bars's Avatar
 
Join Date: May 2008
Location: south texas
Posts: 1,415
Total Cats: 10
Default

Was that your first off? No offense but it doesn't look like you've had that much track time to be worried about perfecting your setup. Not really pushing the limits in the corners. If your not throwing a tiny bit of counter in, your not finding the limits. A fast auto-x course is a good place to practice this and get your timing, car sliding butt-o-meter, etc. calibrated. And at less scary, less car or tire damaging speeds.
spoolin2bars is offline  
Old 10-01-2014, 10:12 AM
  #40  
Junior Member
 
tyhackman15's Avatar
 
Join Date: Mar 2014
Location: ATX
Posts: 169
Total Cats: 13
Default

I see you're in IL. I ran at the GPS track times day @ Blackhawk Farms the other week. They had some truly amazing instructors available to ride along or drive your car and coach. I'd recommend that event to anyone. I learned a ton.
tyhackman15 is offline  


Quick Reply: ? for those with 949 big grip kit



All times are GMT -4. The time now is 12:06 PM.