Rxxx-7_GSL-SE

i am a retard i dont know anything im assanine


stupid dumbass usdm ***** auto class kids did this

there was a test question "what alignment angle will be affected by raising the rear of the car?"

i said "camber + toe in"

this is because i was thinking of an fc which has "dtss or passive rear steering"

so im i right or wrong to say that "camber and toe in" are affected if you raise only the rear of the car with cars with passive rear steering/suspension. like in a fc or porsche 928

that is the million dollar question

everyone says im an idiot and that cars with passive rear steering will not have camber and toe in affected if you raised only the back end.

but in fact if you lower and slam the rear of an fc the hack way by cutting coils the toe in will change along with camber.

please prove me right

thanks guys!

keeping on rotaxing!

666cody666

your wrong

ptrhahn

iTrader: (9)

If the car has independent A-arm based suspension, camber will be affected when you raise the car... and toe likely as well.

Black91n/a

I KNOW that you'll loose negative camber (gain positive) as you raise the back end, and I do beleive that it'll gain toe in as you raise it as well. I beleive that it goes to toe out as you lower the back end.

Rxxx-7_GSL-SE

stop following the heard and learn to stand up for yourself and what is right sometimes..... especially when that someone considers you one of his best friends....

i hope you rise above the peer pressure man....

straight from wiki:
"Mazda also introduced Dynamic Tracking Suspension System (DTSS)in the 2nd generation RX-7. The revised independent rear suspension incorporated special toe control hubs which were capable of introducing a limited degree of passive rear steering under cornering loads."

bingo bango bongo.... mazda's answer to: "what alignment angle will be affected by raising the rear of the car?"

CAMBER AND TOE IN

there we go says the principle is toe in under load. Thus toe out when the rear is raised.....

also from http://www.mazdamark.com/about_the_fc.htm :

"The rear suspension was more unique. As all the Japanese automotive manufactures were playing with rear steering in the mid -eighties, the RX-7 followed suite with an independent, Dynamic Tracking Suspension System with trailing arms, Triaxial floating hubs, camber control links, coil springs, and a 12 mm anti-roll bar (14 mm with the Heavy Duty suspension). Mazda claims to have applied for more than 100 patents on their Dynamic Tracking Suspension System independent rear suspension. With DTSS, the rear wheels become an active component of the steering system, changing from toe-out during low lateral force cornering to toe-in for extra stability during high lateral acceleration cornering situations and to reduce lift throttle over steer which had been a problem on the 1st generation. Similar systems were soon found on Porsche and other German manufactures vehicles."

ptrhahn

iTrader: (9)

Are you stupid?

Rxxx-7_GSL-SE

what u talkin bout?

stupid that i let those ******* USD ****** to let them get to my head?

ptrhahn

iTrader: (9)

DTSS has nothing to do with that.

RacerXtreme7

iTrader: (2)

Correct and incorrect. Yes raising or lowering it will affect Toe and Camber (notice I said TOE and CAMBER, not "toe in" although you will gain toe in when raising and lose negative camber). DTSS has nothing to do with it, we are talking about static alignment I assume and not dynamic.

~Mike............

Rxxx-7_GSL-SE

sorry my mistake

like what Mike said, nothing to do with dynamic alignment, question is about static.

Rxxx-7_GSL-SE

for all those tryin to crack a joke sayin: WHO GIVES A ****:

who gives a ****: really no one, except for people who have strong morals and think you have a right to speach and acknowledgement

THE POINT/method behind madness: MORAL/principles NOT MARKS

standing up for what is right when you know it is right.

classicauto

iTrader: (3)

Well, purely from a techincal standpoint, that answer would be correct but also incomplete since dynamics in the front will change also. Caster would be slightly affected by raising the rear.

But what is the answer they're providing if yours is "wrong"?

Rxxx-7_GSL-SE

yes im right and wrong

My mistake was my wording i shouldnt of used dynamic instead of static and toe in instead of just "toe"

The teacher only took the right answer as CASTER. He said where the **** did you get rear end from and DTSS????!!!!

So ya i got zero credit for saying "toe in and camber" for an answer

when in fact answer is:

w/ floating hubs like all round in a FC: ALL angles toe/cam/cast
w/ fixed hubs: only cam/cast since toe is fixed with a c hub or hinge pin.

Rxxx-7_GSL-SE

this makes me think of bob marley in "get up stand up"

Black91n/a

There probably doesn't exist a production suspension that doesn't change toe as it moves.

There is no such thing as caster in the rear. That's related to the pivot axis for the steering, and since the rear really doesn't steer (even with DTSS it's tiny motions) so it's not applicable.

The E30 chassis BMW's have a similiar rear suspension to us, and here's a link showing the camber and toe curves of the rear as the suspension moves, so as you can see, yes toe does very with suspension movement.

http://e30m3performance.com/tech_art...ves/page-2.htm

maxcooper

All the angles change. But the question asked for one angle. (Front) caster makes sense as the best answer to that vague question. But I agree that it is a poor question.

-Max

rx7will

iTrader: (6)

This is what they mean:
If a car was on a platform and you jack up the rear of the car on the rear suspension. What alignment angle will change. (This is assuming that the rear suspension angles will not change)

Caster is expressed in degrees and is measured by comparing a line running through the steering system's upper and lower pivot points (typically the upper and lower ball joints of an A-arm or wishbone suspension design, or the lower ball joint and the strut tower mount of a McPherson strut design) to a line drawn perpendicular to the ground.

Perpendicular to the ground is the key, this line stays the same and when you lift the rear of the car upwards you are physically changing the line running through the steering system's upper and lower pivot points. Which is the caster angle

Everyone assums that "raising the rear of the car" means to adjust the coil over or install a different spring.

This question is worded very poorly but it was meant to test to see if you really understand the definition of caster.

redneckdave

are you that much of an idiot.. it doesnt work like that dumbass.. your wrong

Rxxx-7_GSL-SE

kill yourself dave. you know im at least paritally right cuz i was wrong on technical terms in my answer.

i used "toe in" instead of just "toe".

you ignorant fat tit bigot chauncey

Black91n/a

I realised that it's not true, a live axle car always has zero toe and camber. All independant rear suspension cars will have those angles change.

classicauto

iTrader: (3)

Should've said that clearer.

I meant raising the rear would affect the caster up front. I Know it can't exist on the rear wheels, just didn't explain properly.

Rxxx-7_GSL-SE

hell why didnt i think of WHEELBASE??!!! theres technically 4 alignments that can be messured.

the greater the differnce between ride height in front and rear then the wheel base decreases