Additional camber...
#1
Senior Member
Thread Starter
Join Date: Jan 2005
Location: miami FL
Posts: 352
Likes: 0
Received 0 Likes
on
0 Posts
Additional camber...
Hi guys, I was wondering what the EP guys use to add extra camber. I have cusco camber plates up front, as well as a rear subframe spacer to adjust camber, but am unable to go above 3 degrees negative. Im still getting my tires wearing more on the inside than outside, so I would like to try to add a bit more. Should I cut the front strut mounts and fab larger adjustable camber plates or is there another way?
#4
Senior Member
Thread Starter
Join Date: Jan 2005
Location: miami FL
Posts: 352
Likes: 0
Received 0 Likes
on
0 Posts
yeah sorry guys, thats what I meant. Im wearing the tires significantly more on the outside that inside still, and all of my camber settings are at max. Im running about 3 degrees negative in the front and about 2 in the rear. Car handles well, but Im wondering if im leaving time on the table by not using all of the tire available in the corners if its still scrubbing so much on the outside.
#6
Lives on the Forum
I'm with jgrewe on this. Start focusing on roll control (swaybars) rather than trying for more camber.
On my 1st gen (not sure what you've got) I can run over 3 degrees negative, but only race at about 1.5 I've found that any more than 1.5 wears the inside of the tire, because my car has almost no roll even in the hardest of corners. Between the low ride height and the massive swaybars (Respeed hollow bar on front), the car just doesn't roll. And if it doesn't roll, then you don't get the huge camber changes that require you to overcompensate by running massive amounts of negative camber.
.
On my 1st gen (not sure what you've got) I can run over 3 degrees negative, but only race at about 1.5 I've found that any more than 1.5 wears the inside of the tire, because my car has almost no roll even in the hardest of corners. Between the low ride height and the massive swaybars (Respeed hollow bar on front), the car just doesn't roll. And if it doesn't roll, then you don't get the huge camber changes that require you to overcompensate by running massive amounts of negative camber.
.
Trending Topics
#8
Senior Member
Thread Starter
Join Date: Jan 2005
Location: miami FL
Posts: 352
Likes: 0
Received 0 Likes
on
0 Posts
here is a pic of the car at PBIR. Im running a speedway swaybar, on the middle of the three adjusting points . The car is handling very neutraly, with a touch of easy to induce oversteer when needed, so Im a bit hesitant to throw it off. I have been thinking of purchasing some higher spring rates all around to test out, but I could also tighten up the front sway bar, and maybe add the stock rear bar as well (not running a bar in the back). What do you guys think?
#16
1308ccs of awesome
iTrader: (9)
I'm considering installing some on my rx-7 so I can change the camber plate to a caster plate. you should be able to get a lot more camber out of it.
are you having the same issue on the back? I find that hard to beleive... I had -3* of camber on the rear when it wasn't adjustable... just from lowering.
#18
Junior Member
Join Date: Mar 2007
Location: Calgary / Alberta
Posts: 12
Likes: 0
Received 0 Likes
on
0 Posts
Double check your bushings too, if you don't have poly bushings you might want to consider switching as it will tighten everything up and may make more of the camber you have a little more effective.
#19
Let's get silly...
iTrader: (7)
For racing i would only run 1 cam bolt per side. I have only ever run them on the top, but i wanted to try the bottom to get wider track width (marginal i know).
Also coat them generously in red locktite and set them to max position. Use the strut plates for final and future adjustment. If you mess with them after the locktite dries or dont use locktite expect them to move around on you.
Also coat them generously in red locktite and set them to max position. Use the strut plates for final and future adjustment. If you mess with them after the locktite dries or dont use locktite expect them to move around on you.
#20
Rotary Freak
here is a pic of the car at PBIR. Im running a speedway swaybar, on the middle of the three adjusting points . The car is handling very neutraly, with a touch of easy to induce oversteer when needed, so Im a bit hesitant to throw it off. I have been thinking of purchasing some higher spring rates all around to test out, but I could also tighten up the front sway bar, and maybe add the stock rear bar as well (not running a bar in the back). What do you guys think?
Just some thinking on my part as I have exactly the same issues and have tried for years to come up with a solution. I tried massive bars on the front with no change. I, like you, run without a rear bar as it makes the car a lot more neutral in the high speed corners, so I tried 3 different bars with an improvement. I tried all different spring rates up to 900 lb fronts and 800 rears and found little improvement. I tried messing around with alignments (up to 5 degrees) with little to no improvement, but I think I know what is happening.
About 5 years ago I added a data logging system to my car. I started to measure peak and sustained cornering G's at the high speed track. What I found was that with the added aero on my car, I was able to maintain 1.2 g's on the long sweepers with momentary loadings of almost 2 g's. I also started to measure (by eyeball and compass) front wheel camber in those high g corners and found that the camber was changing fairly dramatically under load. I then went back and looked at what could be moving under load and finally traced it down to the Poly bushings I am using in my front control arms. The poly bushings were allowing the front control arms to move almost a 1/2" inwards under load. I then looked at what the AWR EProd guys were using and realized that they had eliminated that compliance.
Aero + Grip + Load + Turning causes the wear. I think that we both need to step up to the AWR front control arm bushings.
As well Toyo RA1's are notorious for second rib wear under high grip and load conditions, just an FYI.
Eric
#22
Senior Member
Thread Starter
Join Date: Jan 2005
Location: miami FL
Posts: 352
Likes: 0
Received 0 Likes
on
0 Posts
Hi guys, thanks for all the answers and suggestions!
The car is fitted with mazdaspeed delrin bushings all around, so all of the control arm bushings should be pretty solid. The Ra1s were running with 30psi cold that would bring them up to about 38psi hot. I have 400 and 250 springs front and rear and think I will try to bring them both up together. Like I said I like the way that the car is handeling so Im hesitant to go stiffer on the sway bar without adding something in the rear to balance it out. Maybe I will try going to full stiff on the front sway bar and adding the stock rear bar.
I may just be the tires, and it may also just be s1mpsons suggestion that the toe be slightly off. The car has been due for an alignment for some time, and I have been blowing it off. Im aligning the car, zeroing everything out, and going out with brand new rubber next time. Will report the findings from a clean sheet.
The car is fitted with mazdaspeed delrin bushings all around, so all of the control arm bushings should be pretty solid. The Ra1s were running with 30psi cold that would bring them up to about 38psi hot. I have 400 and 250 springs front and rear and think I will try to bring them both up together. Like I said I like the way that the car is handeling so Im hesitant to go stiffer on the sway bar without adding something in the rear to balance it out. Maybe I will try going to full stiff on the front sway bar and adding the stock rear bar.
I may just be the tires, and it may also just be s1mpsons suggestion that the toe be slightly off. The car has been due for an alignment for some time, and I have been blowing it off. Im aligning the car, zeroing everything out, and going out with brand new rubber next time. Will report the findings from a clean sheet.