Dampening and Spring Rates

[savahn]

Does anybody know the damping and spring rates of the stock FD and FC?

The numbers I pulled out are as follows but I do not know the unit measurement - likely to be pounds as I got these from the "Mazda RX7 Performance Handbook" by Mike Arcas. And I havent been able to get an answer from most suspension distributors I've met so far.

1st Gen:
Front: 100
Rear: 85

2nd Gen:
Front: 95
Rear: 90

3rd Gen:
Front: ?
Rear: ?

Purpose of asking is so I have something to work on when I get new struts - looking at GAB.

 

[kariayam]

U may find everything u need here: Suspension Upgrades

Goodluck!!!

 

[Alchemis]

seriously speaking... don't waste your money at GAB product....
if you want... i can customize you a set...who doesn't know i run a shocks factory.. :)

my shocks are tuned for my likings and for pure handling purposes only.
my idea is 12 for the front, 10 for the rear.. you need a grippy tire with that settings..
it's for the gymkhana and touge run...

for track... it's sufficient as well but on a certain corners you'll feel it's not enough...
but it can be countered by stiffening the damping properties of the shock...

let me know what is your purpose of shocks.. i can build it at the price of GAB's retail.

---------- Post added at 10:51 AM ---------- 6 hour anti-bump limit - Previous post was at 10:51 AM ----------

to top that up... GAB's highest range i'm refering to.

 

[K_Takuya]

Alchemis,

currently i have a GAB white one (i think the old model) used with stock wira se spring... what customization you can offer? PM me the price

Thanks

 

[Brew]

Oo..anyone running Tein Type HA springs? Wanna know some settings u guys are using too.

 

[savahn]

@Alchemis - I didnt know you ran a shocks factory. 12-10 is KG/mm? Sounds pretty damn hard for an FC.

I'm very interested.

 

[Alchemis]

ohhhh FC ar.... different story.... coz FC is macpherson strut front multi link rear. FD is double wishbones front and rear.

so optimum will be around 10 fronts and 8 rears. make sure you have good tires with such spring rates...

softer setup will be 8 fronts 6 rears.... that's if you think you don't want a damaged spine from long term driving.

have to consider the body of FC is much stiffer than FD... something wierd... i guess it's the structure.

 

[savahn]

10 - 8 or 8-6 sounds more reasonable. I really had to go check all my sources again when you wrote 12 - 10 :p

I'm thinking around 8-7. I really like my driving to be pleasurable.

FC is stiffer than FD? I find that rather odd.

 

[Alchemis]

it is... because of the design of the arms and such... small spring rates gives huge difference due to the motion ratio of the suspensions. but not necessary better handling.. :)

 

[Horny93]

How do i check that the spring rate is equal on both sides after adjusting the coilovers? The mechanic just use ruler to measure the distance between the threads. How do i set up the car so that i get a planted feel? Now i feel that the car is skittering all over the place.
Thanks.

Justin

 

[RERider]

do a weight distribution for all wheel, at N1 Racing