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FWD traction theory

1.9K views 11 replies 8 participants last post by  LVA3KGT  
#1 ·
i have been turning this idea over and over in my head for awhile now, but lack the necessary knowledge to even deduce if it's possible.

so i pose it to you guys:

after reviewing the weakness of FWD in drag and just basically launching or accelerating -

from many other posts about the subject and posts on RWD vs FWD, the weakness would be in the weight transfer, correct? the weight transfer at launch makes our back squat, lifting the driving wheels off of the ground, making for a very bad launch at the least, not including wheel hop- if you launch too hard that is.

this is common knowledge i think, and i've seen someone post about a guy with a FWD chrysler that used a setup on his rear wheels (strictly for drag) that made his rear squat almost disappear (if not completely) i think he put some kind of supports on the shocks or springs, making them hard as possible, which did the trick. i was wondering, if this could be done in the fashion like tein did on their own suspension setup with the EDFC (electronic dampening force controller - or something like that) IE: make some supports like that chrysler guy did, but electronically controlled from the cockpit, so as to also have a street application + coming out of corners, to accelerate and launch better (i heard that RWD can start accelerating out of a corner faster than an FWD can, in a RWD vs FWD debate)

or can the tein suspension kit + EDFC be modified for use on FWD, and in that manner?

once again, i just wanted to get the ball rolling (if it can be rolled :p) and see what you guys can make of it, as i lack the knowledge to do so at this point.
 
#2 ·
ShaRd said:
i have been turning this idea over and over in my head for awhile now, but lack the necessary knowledge to even deduce if it's possible.

so i pose it to you guys:

after reviewing the weakness of FWD in drag and just basically launching or accelerating -

from many other posts about the subject and posts on RWD vs FWD, the weakness would be in the weight transfer, correct? the weight transfer at launch makes our back squat, lifting the driving wheels off of the ground, making for a very bad launch at the least, not including wheel hop- if you launch too hard that is.

this is common knowledge i think, and i've seen someone post about a guy with a FWD chrysler that used a setup on his rear wheels (strictly for drag) that made his rear squat almost disappear (if not completely) i think he put some kind of supports on the shocks or springs, making them hard as possible, which did the trick. i was wondering, if this could be done in the fashion like tein did on their own suspension setup with the EDFC (electronic dampening force controller - or something like that) IE: make some supports like that chrysler guy did, but electronically controlled from the cockpit, so as to also have a street application + coming out of corners, to accelerate and launch better (i heard that RWD can start accelerating out of a corner faster than an FWD can, in a RWD vs FWD debate)

or can the tein suspension kit + EDFC be modified for use on FWD, and in that manner?

once again, i just wanted to get the ball rolling (if it can be rolled :p) and see what you guys can make of it, as i lack the knowledge to do so at this point.
Tein has a FWD setup coming soon that is able to be used w/ the EDFC... but im not sure how stiff these get in the back? I think i remember ipo doing something like this w/o teins setup... but in the end it might work... but basically... Tein has the setup coming soon...
 
#4 ·
Get Solid Motor mounts
Get a Limited Slip

Equally Ballance the 4 corners of the car, proportionaly, like 2x the weight in the front, than the back.
x ---- x
|
|
|
y-----y

make it so the front is heavier than the back

Get some form of insert for the springs, so they dont compress as much.
Also a front end alignment wont hurt, neither will front strut bars, or wider better compound tires.

The FWD Mopar guy used a solid strut in the back, he said he didn't like it except on 'glass' smooth track. I suppose a really good race suspension, like a TIEN setup would be cool.



All of the above are good ideas for a FWD drag car.

And its not necessarily weight transfer, but thats really not relevent to the discussion :) hehe.

Hope this helps
 
#6 ·
You could just buy some ground controls or coil-overs and before you drag, lift the back as high as you can and drop the front. Would look goofy as hell IMO and don't even know if it'd be safe (camber issues and all that) but life's a gamble right?
 
#7 ·
ShaRd said:
i can't find a link to that chrysler guy's site, otherwise i'd post it here, for better clarification.

:eek: if tein makes that... i dunno what i'm gunna do... *creams self*
look on teins site and 3sxperformance... they are indeed making it... so that is nothig to worry about :p... i plan on probably picking it up after i get the money in a few months...

-Tim
 
#8 ·
Im2Much4U said:
You could just buy some ground controls or coil-overs and before you drag, lift the back as high as you can and drop the front. Would look goofy as hell IMO and don't even know if it'd be safe (camber issues and all that) but life's a gamble right?
Thats what IPO has done with SL-T. He also made "blocks" out of metal stock and blocked the springs before he had the GC's.
 
#9 ·
I have solid mounts, sticky tires (FM901s), and LSD- hardly make any hp, and still get tons of slippage. Wheel hop, though less of a problem then it once was, is still there too. Guess I will have to get an aftermarket suspension set-up before I do the TT swap.
Oh, it could be that I have over 206K miles on the stock suspension... nah :)
Actually, I think I'm just not slipping the clutch enough. LSD or not, you just can't drop the clutch and stand on the gas on a 4.5K launch. So far my best launches have been around 3-3.5K, while quickly slipping the clutch, and 70-80% throttle.
 
#10 ·
heh. i meant it to be jeremy, but now it's turned into "how to have better traction with a FWD."

that wasn't the question :p i'm asking if anyone's ever thought of the first question, or if it will work?
 
#11 ·
I had Dunlop FM901's and those tires were garbage. They would spin like crazy on the lightest launch and they were loud inside the car. If you were at hwy speed you couldn't hear yourself think. I bought my cheap wheels Exel 17X8" and they came with Federal SS595's and I knew they would just suck..I was so wrong.They were 10 times the tire the FM901's were. Quiet on the hwy. and the grip at launch and low gear WOT was better then the Dunlops.It's time for new tires though and I think I I am going with the Fulda Extremo..It's a German branch of Goodyear and the Fulda Extremo is basically a top of the line sticky Goodyear without the cost. I can get them for $80.00 each(actual dealer cost)Retail is about $130.00 each. If they suck I will use them for winter tires.
 
#12 ·
^Good tip. I'm not happy with the 901s at ALL. They are supposed to be sticky, but they're really not. I want my Nokian NRZ's back!!! They were the best tire I've used yet, but fairly expensive.