@ Noodels

Thanks for your feedback.

 

based on everything i've read and what i'm seeing in the video.

- Square 255 setup
- Less rear wing AoA
- even out your toe L/R if you can
- Camber? You should have at least -3.0 camber up front. Didn't see that yet.

If you're still getting understeer after all of that - it's driver related, which i might be inclined to think is partially the problem. Your comment about switching from your current to staggered setup to your friend's 255 square setup and seeing minimal improvement leads me the believe that there's a driver related component here. Also, trying to sort out your understeer problem first before going to 255 square only means that you'll have an oversteer problem afterwards.

Edit: noticed front RCAs and no rear RCA to match. Either run F/R RCAs or F/R stock, don't mix it up. I used to run front RCAs and no rears - noticed an improvement in balance after pulling the front RCAs out and just running stock.

 

@ Bullwings

Thanks for your feedback.

My friend's square setup was an old set of tires Falken Azenis 615 that were almost bold. I guess that I should have disclosed that. Upon looking at my lap times I was almost 2 seconds faster than with my non-square setup.

 

Is your suspensions ride height adjustable? Try adding static rake to it. I'm happy to talk through some chassis tuning with you over the phone if you want to pm me your number. Ive worked in high level sports car racing (IMSA, WEC, ect) for 11 years...

Cheers

 

@ Levworks

Thanks for your feedback.

Yes, I have coilovers and ride height can be adjusted. I did lowered the front about 1/4 of inch. I also increased camber to almost -4 degrees. It might be all related to worn tires even though they have plenty of thread left, but the outer side is starting to show signs of wear. I've run my non square setup for a year and they have 9 track weekends, 21 track days and 84 track sessions that were 20-30 minutes long which adds up to about 35 hours of tracking time.

I appreciate your offer and will be considering it, but I don't even know how to send a PM through this platform.

I have an appointment scheduled for August 15 with Winning Formula who specializes on suspension setups for S2000 and Miata and will be reporting back. Part of the setup will include corner balancing.

Kind regards,

Victor

 

Correct me if I'm wrong, RCA correction works to effectively make that end of the car stiffer? I can see how that may be affecting the understeer. I think the faster times with nonstagger bald RT615K should say enough about how much better nonstagger is but that's already in the plans.

 

@ Shift9303

I believe that you are correct, although I don't know how much stiffer. I opted to add RCAs instead of going with an after market front sway bar. It kind of made the front push more with my nonstager setup. Before adding the RCAs I was about 1.5 seconds faster. I forgot to mention that I flipped the tires with rotation backwards since I'd have more meat on the outer edge. From what I've read there is not effect on the dry, but who knows. This change could have worsen my front push, but I'm not sure. I asked an experienced driver and he said that he does it all the time with no drop on his lap times. I'm also coming to the conclusion that my tires may have too many heat cycles and grip is just going away.

 

I think you need new tires. That's a lot of heat cycles. also, invest in a good tire pressure/tire temp combo gauge. Long Anchor makes this one if you can swing the cost:


That will help you dial in your camber by measuring the temp across the tire along with tracking the wear of your tire across the contact patch.