01-11-2017, 12:30 AM
So, after reading online about ride frequencies for auto-x vs street on the Miata I see to stay under 2.0Hz for street vs track/auto-x stay under 2.5Hz. My plan is to either start right above the 2.0Hz line like at 2.05Hz or go middle-ground at 2.2Hz.
2.0Hz puts the car around 400F/325R or 7.1kF/5.8kR
2.05Hz puts the car around 425F/350R or 7.6kF/6.3kR
2.2Hz puts the car around 500F/400R or 8.9kF/7.1kR
The goal is to keep the car mostly streetable as I will daily this car more than auto-x while being able to actually get heat into 245 RE-71R tires and not have too much dive/squat/roll. I plan to keep the stock front sway bar and remove the rear sway bar to help with grip/remove oversteer and helps keep ride comfort better with stock/no sway bars. If that doesn't fix oversteer I will upgrade to a stiffer front bar and put the stock rear on or leave it off.
Since the Ohlins hit 1.96Hz front and 1.65Hz rear I'm going to mark them off the list. Yeah DFV and shit that helps suck up curbing and bigger bumps on the road but is a bit too soft for what I'm going for. Plus the price is a bit high...
I'm looking at going the Feal 441 Road Race route with custom valved dampers per whatever Swift Spring rates you choose or they help you choose. Feal will also re-valve the dampers for a change in spring rates if I either want to go softer or harder.
Calling DJ or others with understanding of ride frequencies and what you think would be okay for the stickier street tires at an auto-x with usually quicker transitions than the track. If it were a track car on the street tires the 2.0Hz rate would be just fine just not sure how well it would do at an auto-x.
2.0Hz puts the car around 400F/325R or 7.1kF/5.8kR
2.05Hz puts the car around 425F/350R or 7.6kF/6.3kR
2.2Hz puts the car around 500F/400R or 8.9kF/7.1kR
The goal is to keep the car mostly streetable as I will daily this car more than auto-x while being able to actually get heat into 245 RE-71R tires and not have too much dive/squat/roll. I plan to keep the stock front sway bar and remove the rear sway bar to help with grip/remove oversteer and helps keep ride comfort better with stock/no sway bars. If that doesn't fix oversteer I will upgrade to a stiffer front bar and put the stock rear on or leave it off.
Since the Ohlins hit 1.96Hz front and 1.65Hz rear I'm going to mark them off the list. Yeah DFV and shit that helps suck up curbing and bigger bumps on the road but is a bit too soft for what I'm going for. Plus the price is a bit high...
I'm looking at going the Feal 441 Road Race route with custom valved dampers per whatever Swift Spring rates you choose or they help you choose. Feal will also re-valve the dampers for a change in spring rates if I either want to go softer or harder.
Calling DJ or others with understanding of ride frequencies and what you think would be okay for the stickier street tires at an auto-x with usually quicker transitions than the track. If it were a track car on the street tires the 2.0Hz rate would be just fine just not sure how well it would do at an auto-x.