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Please Note:

 Steps #3 - #5 can be both time consuming and frustrating for the uninitiated. 

Iron Canyon Motorsports has recently released an ICM Alignment System to assist in 
“stringing” your Spec Miata. Visit http://www.ironcanyonmotorsports.com for more 
information. 

Step #3 (LF Toe, Camber and Caster) 

 
Time to get that kite string and jack stands out.    Adjust 2 stands where they are slightly 
above the center wheel hub height.    Tie your string securely to the portion of the stands that 
is adjustable.      Now make final corrections so the string is level with the center line of the 
wheel hubs and tight enough to not be drooping.    Ok, the Miata is wider in the rear, this is a 
pain.    You should now have a string tied to the stands with it level with the hubs centerline 
with the stands stretched out about 3’ past the front and rear wheels string tight.    Basically, 
you will see a string running along the side of your car connected to the stands.    Move the 
stands around until you have a 1” gap on the LR between the string and the wheel lip front 
and rear of that wheel.    Once this is done, you have aligned the string to the wheel that you 
already aligned to the chassis, coming together for you now?    As you set toe and make other 
adjustments, you will have to continue to square up the string to the LR wheel.    BUT, after 
we get further along, we will drop the string and use toe plates, stay with me.   

   
Move to the front left wheel, measure from the string to the wheel lip, front and rear of the 
wheel, and inline with the string.    Since the rack is centered and locked down and you 
have that 1” gap on the rear, you are looking at how far the toe is off verse the centerline of
the car.    Adjust toe on the LF to zero.      Of course, you will have to re-square your string 
each time you roll the car.   

   
While doing this corner, you are going to set your camber to -2, your caster to +3-5 (just make 
sure the other side matches on caster later).    Once the toe is zero, and the other settings are 
correct, secure this corner but do not tighten all the way just yet.   
   
Step #4 (RR Toe and Camber)   
   
We now are going to move to the passenger side of the car.    Dust off them toe plates, their 
up now.      Start by using your toe plates to get the RR to zero toe.    While there, you guessed
it, set the camber to -2.    Once you are done, move to the RF corner.   
Remember, tighten to keep form moving only, no need to gorilla it at this point.   
   
Step #5 (LF Toe, Camber and Caster)   
   
Use the toe plates to match the left side, just like you did in the rear.    Set the caster and 
camber to match the left front.   
   
At this point, the car is aligned with the centerline of the car, our ride height is set and our 
settings are in basic form.    I call this the pre-scale setup.    Good for you, these cars are not 
that corky, meaning not much chasing compared to other types of race cars.   

Содержание Chassis Tuning

Страница 1: ...s need to be done to the car a few assumptions have to be made and a couple techniques explained 1 The sway bars need to be disconnected on one side I like the left side 2 You need to find the center of the steering rack then lock down the column with a pair of vice grips and a bungee cord This would be a good time to adjust the steering wheel adapter if it is off center from the rack s center I u...

Страница 2: ...ght It Begins Step 1 Ride Height Using the spring perches adjust the ride height to 5 1 4 at the pinch weld on the bottom of the car at the rocker panel see Picture 2 3 It is normal for the LR to have more threads showing on the bottom compensating for the driver s weight This will take sometime as you get used to how the car moves on one corner while you adjust another BE PATIENT keep going back ...

Страница 3: ... BUT after we get further along we will drop the string and use toe plates stay with me Move to the front left wheel measure from the string to the wheel lip front and rear of the wheel and inline with the string Since the rack is centered and locked down and you have that 1 gap on the rear you are looking at how far the toe is off verse the centerline of the car Adjust toe on the LF to zero Of co...

Страница 4: ...o be made so we will concentrate on Wedge cross weight while maintaining ride height NOTE If a car has 49 of CW cross weight it is considered de wedged If it has 51 CW it is considered wedged De wedge helps the car turn left while tightening up the balance on rights Vise versa with 51 wedge I ll explain it more later The fun begins You are either REAL lucky and have a 50 car it happens or you see ...

Страница 5: ...pletion Once you are finished either because it is right or because you just gave up we have more things to do First set the sway bars to full stiff up front and full soft in the rear NO PRELOAD Then remove the vise grips from the column and let the guy that has been sitting in the car this whole time get out or remove the weight you used to simulate your body weight The car will not look right wi...

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Страница 9: ...Picture 4 ...

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