Mazda Rotary Club

General => General Technical => Wheels & Tyres, Suspension & Brakes => Topic started by: Fish on July 21, 2003, 05:23:46 PM

Title: Alignment Settings for FD
Post by: Fish on July 21, 2003, 05:23:46 PM
This is a rought guide on setups for the FD model RX-7. You will need to tinker with the setups until you find one that suits YOUR driving style.

Dan
Title: Alignment Settings for FD
Post by: Oliver on July 27, 2003, 09:54:12 PM
Dan - Those are from Pettit Racing in the States ...correct?

I had my FD checked out in May and used the long track set-up. Very happy with it :)
Title: Alignment Settings for FD
Post by: Fish on July 28, 2003, 08:29:50 AM
I think they are the Pettit settings, but everyone seems to quote the same figures so a bit hard to tell.

Dan
Title: Alignment Settings for FD
Post by: iiyama on May 07, 2004, 05:45:36 PM
are these figures in degrees?

What difference can I expect between the different setups? Ie will long track set up give less tyre wear and less oversteer then a short track setup etc etc?

Ian
Title: Alignment Settings for FD
Post by: davefrith on May 10, 2004, 09:26:13 AM
Are these figures not for a totally std FD ?
ie. you can only use them as a base map if you have aftermarket wheels tyres and suspension

those std settings won\'t be suitable on all cars, as Fish says you will have to start from there and tinker.
Title: Alignment Settings for FD
Post by: iiyama on May 10, 2004, 04:50:17 PM
Ah!!
Well mine aint standard for sure, MS01 17\'s and a GAB coil over set up thats lower then a snakes belly.

I have had it tracked to the short track set up and although I havent driven it since for any length of time the car has been transformed. Tracking was not only a mile out, it was also different on all four corners! SO it has to be said that anything would be better then how it was. The only thing I would say is I think the camber settings for the front are a little over the top, might have to get that pulled back a little before the front tyres wear the insides to nothing!

Ian
Title: Alignment Settings for FD
Post by: cruiser on March 18, 2005, 12:21:27 PM
Anyone knows how to transform that 1/16" toe-in to degrees ?
I dont have the slightest idea how much degrees that is and local alignment shop does the alignment in degrees only.
Title: Alignment Settings for FD
Post by: cruiser on March 18, 2005, 12:23:18 PM
Nevermind, found it on the web :)
I\'ll post it here for anyone else needing it:

Refer to the chart below to convert to minutes or degrees of toe. There are 60 minutes to one degree. A good rule of thumb is 1/16 inch toe in per wheel front and 1/8 inch toe in per wheel rear for a car doing autocrosses/time trials.

NOTE: This chart is based on a toe gauge that is 24 inches wide and will NOT be accurate for other WIDTHs.

Toe measurement 1/16 inch or 0.0625 inch = Toe angle 8.95251minutes
Toe measurement 1/8 inch or 0.125 inch = Toe angle 17.9051 minutes
Toe measurement 3/16 inch or 0.1875 inch = Toe angle 26.8578 minutes
Toe measurement Ľ inch or 0.25 inch = Toe angle 35.8106 minutes
Toe measurement 5/16 inch or 0.3125 inch = Toe angle 44.7638 minutes
Toe measurement 3/8 inch or 0.375 inch = Toe angle 53.7172 minutes
Toe measurement 7/16 inch or 0.4375 inch = Toe angle 1.04452 degrees
Toe measurement ˝ inch or 0.5 inch = Toe angle 1.19375 degrees
Toe measurement 9/16 inch or 0.5625 inch = Toe angle 1.343 degrees
Toe measurement 5/8 inch or 0.625 inch = Toe angle 1.49225 degrees
Toe measurement 11/16 inch or 0.6875 inch = Toe angle 1.64152 degrees
Toe measurement ľ inch or 0.75 inch = Toe angle 1.79079 degrees
Toe measurement 13/16 inch or 0.8125 inch = Toe angle 1.94008 degrees
Toe measurement 7/8 inch or 0.875 inch = Toe angle 2.08938 degrees
Toe measurement 15/16 inch or 0.9375 inch = Toe angle 2.23869 degrees
Toe measurement 1 inch = Toe angle 2.38802 degrees
Title: Alignment Settings for FD
Post by: craigr on May 13, 2005, 08:28:39 AM
Any idea on how to translate these values to 19" alloys ?
Title: Alignment Settings for FD
Post by: Fish on May 14, 2005, 04:38:40 PM
Here is a little excel spreadsheet that can calculate the sizes.

Fish
Title: Alignment Settings for FD
Post by: craigr on May 16, 2005, 08:45:09 AM
Thanks Fish,

Sorry for being ultra-dense, but what do I do now ? In your chart of alignment settings, there are differences in the adjustment settings for 16", 17" and 18".

I need to work out what my starting point is for 19". Shall I just extrapolate the numbers and try from there, or use the numbers for 18\'s ?

Cheers, Craig
Title: Alignment Settings for FD
Post by: Fish on May 16, 2005, 07:34:44 PM
I would just use those from the 18\'s.

Fish
Title: Alignment Settings for FD
Post by: Warthog on May 16, 2005, 08:47:02 PM
I took my rx over to Steve, he runs the RX-8 racing team, he has his own business as well, doing TVR\'s etc. He set my 4 wheel allinement and Tein suspension up. I run 18\'s. No under/oversteer spot on. We were at Bedford track the next weekend and being a rading driver himself i let him take me out in my rex to test the set up. Perfect. I never knew a rex could stick like that to a track wonderful time.
He will set your car up give him a ring. But remember every car is different so there is no perfect calculation. My view was i will get the best to set it up and approve it to his standards, which are no less than perfect, then i have one less thing to think about on track or up the strip. His phone number is 01327 878425.
Steve GUGLIELMI Motorsport Ltd. Pop his name into Google see how many pages you get up, enough said. Respect.:wave
Forgot to say -- he sorted out my track and road settings for my suspension. It had been set up for drifting in japan and not put back properly for road use. Back end don\'t move now.:cool
Title: Alignment Settings for FD
Post by: Mart160plus on May 18, 2005, 10:08:49 PM
Top thread, especially as having my car set up for when I hit the Ring will be mega.
Phoned The Guglielmi establishment but waiting for a call back (sure they are in high demand).
Can anyone recommend a laser alignment place either close to Milton Keynes or Durham (yeah, like there are garages up here!) that\'s open on a Saturday ?

I only have 5 or so weeks to get my Rex sorted before I put it to maximum use !!!

Cheers,

Mart.
Title: Alignment Settings for FD
Post by: Jono FD3 on September 13, 2005, 05:11:15 PM
Just a quick one to say that this was a fantastic help in setting the car up.

I had the car set to the long track setting but put -1 degree camber on the front instead of the 0.9, and then proceeded up the A483 to liverpool to see the other half........ Handles like a go-kart  :D  :D although there was one instance of: :3gears-lh but that was because of some nonce in a Civic type R...... needless to say he wasn\'t around for long!!!

If anyone wants to test the handeling of their car and can get to the A483 without a major detore, do it its a blinding road especialy the Newtown - Bilth Wells section :yes !!

Cheers, you\'ve helped me out again guys

Jono
Title: Alignment Settings for FD
Post by: M@r]{ on March 22, 2006, 11:06:39 AM
My car is VERY low, a lot lower than standard.  anyone know how this will affect the settings?

Quote from: Fish
This is a rought guide on setups for the FD model RX-7. You will need to tinker with the setups until you find one that suits YOUR driving style.

Dan
Title: Alignment Settings for FD
Post by: clive on March 22, 2006, 11:45:22 AM
I would advise getting the car laser aligned due to the negative camber you now have on both the front and the rear, as well as having an adverse affect on the geometry on all the suspension you will have rapid tyre wear on the insides of the treads.

You will also possibly find the car wont have as much traction as standard due to not having the tyre correctly in contact with the road and also it may not be as stable as it was as standard due to the alteration of castor angles on the front.

Hope this helps
Title: Alignment Settings for FD
Post by: M@r]{ on March 22, 2006, 01:15:33 PM
Oh yes im planning on getting all that done - thats why I asked about the settings at the top of the thread?  Can I use those?  Are they the same no matter if your car is lowered etc?

Mark

Quote from: clive
I would advise getting the car laser aligned due to the negative camber you now have on both the front and the rear, as well as having an adverse affect on the geometry on all the suspension you will have rapid tyre wear on the insides of the treads.

You will also possibly find the car wont have as much traction as standard due to not having the tyre correctly in contact with the road and also it may not be as stable as it was as standard due to the alteration of castor angles on the front.

Hope this helps
Title: Alignment Settings for FD
Post by: FD3SNuttah on July 24, 2006, 06:01:00 PM
mark i used the street setup and now the alloys sit perfect in the arches and should wear much mroe evenly

my car is lowered on RSR springs and has bilstein shocks.
Title: Alignment Settings for FD
Post by: Ricco_04 on September 17, 2006, 12:12:13 AM
Going to have my car done in the next 2 weeks.

The garage says there new computer & gubbins have all the settings they need but me thinks they will be for standard FD. Will this be ok for an FD using Superstreet\'s or is there an advised setup? :3Confused
Title: Alignment Settings for FD
Post by: shaunwil on September 17, 2006, 12:35:14 PM
Hi, im getting mine done next weekend. Just out of interest is this the same as what is said in the mazda manual with all the fluids topped up and a full tank of fuel with it unlaidend.

Should i go for long track for IOM ????

Cheers

Shaun
Title: Alignment Settings for FD
Post by: Magicmat on August 01, 2009, 11:36:58 AM
anyone got some settings for drifting?
Title: Alignment Settings for FD
Post by: RobMatthews on August 01, 2009, 02:16:01 PM
surely for propper drifting you want max grip so you would use the same settings as a track car? apart from having more steering lock to lock which is nothing to do with the settings anyway?
Title: Alignment Settings for FD
Post by: AtomicRex on August 01, 2009, 02:44:49 PM
Yeah you want max grip on the front....but the rear needs to be reasonably loose?
Title: Alignment Settings for FD
Post by: Magicmat on August 01, 2009, 03:03:46 PM
Yeah you want maximum at the front so that the back end can just swing easily...

But does this mean:

- using very litte negative at the back?
- -1.1 at the front like the guide says ? i\'ve heard of other people running -3 ... which is why i ask

??
Title: Alignment Settings for FD
Post by: RobMatthews on August 01, 2009, 03:13:37 PM
thought best to use 0 on the back for best grip?

I guess it depends how fast you wanna be going sideways and how good you are?if you wanna be passing the competition on a bend faster than them you need the better grip on the rear to be pushing you forwards/sideways quicker whereas if you dont have so much traction you wont get the speed,have you spoken to dragon performance,there car is pretty quick.

If you want to breakaway easy you need less traction, but that means you loose grip which translates into speed of the drift being slower, thats the way i see it anyway?
Title: Alignment Settings for FD
Post by: suba on August 20, 2009, 04:18:05 PM
I\'ve just read through this thread and can\'t really find an answer to the \'what\'s the difference between the short and long setups?\'  I guess short would be for sprint type tracks, and long would be for circuits and long sweeping corners, i.e. the latter would be a bit more stable / neutral?
Title: Alignment Settings for FD
Post by: Laurenzo on May 18, 2010, 11:35:08 AM
Chaps!  Just been along to a laser alignment garage to get the wheels facing in the right direction after a massive rebuild of the suspension on my FD. Told the very helpful chappie that I would like 1/16th toe in on the front, he asked what is that in metric? Doh! like I know.
 
Anyone on here give me a conversion please.
Title: Alignment Settings for FD
Post by: bdarepat on May 18, 2010, 12:28:39 PM
Read page 1;)
Title: Alignment Settings for FD
Post by: Laurenzo on May 18, 2010, 12:45:21 PM
Quote from: bdarepat;694211
Read page 1;)

Well I did read that post that took it into degrees, but not having a full understanding of these things, hence the post, and the guy asking for it in metric, I just assumed that it would be a fraction in mm\'s
Title: Alignment Settings for FD
Post by: goldk28611 on May 18, 2010, 02:48:22 PM
Quote from: Laurenzo;694216
Well I did read that post that took it into degrees, but not having a full understanding of these things, hence the post, and the guy asking for it in metric, I just assumed that it would be a fraction in mm\'s


so reading the above chart:


Toe measurement 1/16 inch or 0.0625 inch = Toe angle 8.95251minutes

then using my friend google to do the math:
0.0625 inches = 1.5875 millimetres
Title: Alignment Settings for FD
Post by: Laurenzo on May 18, 2010, 03:48:32 PM
Quote from: goldk28611;694246
so reading the above chart:
 
 
Toe measurement 1/16 inch or 0.0625 inch = Toe angle 8.95251minutes
 
then using my friend google to do the math:
0.0625 inches = 1.5875 millimetres

There you go, your a star!:Thumbsup! cheers for that.
Title: Alignment Settings for FD
Post by: suba on May 19, 2010, 09:11:37 AM
Quote from: Laurenzo;694182
Chaps!  Just been along to a laser alignment garage to get the wheels facing in the right direction after a massive rebuild of the suspension on my FD. Told the very helpful chappie that I would like 1/16th toe in on the front, he asked what is that in metric? Doh! like I know.
 
Anyone on here give me a conversion please.


That would put me off using the place - there are so many alignment places that employ monkeys....:rolleyes:
Title: Alignment Settings for FD
Post by: Laurenzo on May 19, 2010, 03:21:03 PM
yes I agree with you, all I need is all the wheels facing in the right direction so that I can then drive it to a place that will corner weight it, and set up the camber etc ready for the track.
Title: Alignment Settings for FD
Post by: suba on May 19, 2010, 03:28:27 PM
cool - kwik fit job then! Just get them set up both pointing forwards. :yes
Title: Alignment Settings for FD
Post by: doriboy on July 19, 2012, 05:32:15 PM
Anyone know what is the maximum amount of negative front camber you can get without major mods?
Drifty drifty...
Title: Alignment Settings for FD
Post by: Gaz. on July 20, 2012, 01:43:07 PM
When I went to get mine aligned, I had -4 up front just from lowering it (albeit quite far)