johnny_10196
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I think he said the problem happens on deacceleration not launch.Mine has never been stable or felt nice under extreme acceleration, I guess I possibly know why now....
The issue arrises anytime there is a significant enough vertical motion in the back end that would allow the control arms to move enough that it results in toe changing so as this does happen under deacceleration when the cars weight transfers to the nose and the rear end lifts, this can also happen during acceleration from a very low speed its just that the toe change is going in the opposite direction but will still cross that "both tires are parralel" phase.I think he said the problem happens on deacceleration not launch.
Maybe when the car squats under acceleration it causes the front wheels to slightly toe out. Usually a drifty feeling is toe out in the front. We do that on purpose on track cars for quicker turn in. If you get an alignment done, see what the front toe is.I mentioned it somewhere on this forum, some time back, that when I do a hard acceleration, the front end gets drifty. I don't like it, but am aware of it now.
Thanks, no one had answered before.Maybe when the car squats under acceleration it causes the front wheels to slightly toe out. Usually a drifty feeling is toe out in the front. We do that on purpose on track cars for quicker turn in. If you get an alignment done, see what the front toe is.
I have watched and never seen this issue brought up by drivers of the Supra, in the videos. It seems they go into and out of corners without much issues. There is some oversteer, but that I something, for me, I prefer, though some say the car is very neutral. Other opinions?
Right, I mainly enjoy doing the canyons and you can only go so fast on those, even if there was no speed limit and it is a joy there. And so it goes. :^)I don't think their concern is the tail end sliding around on corners but more so just the deceleration from a high speed to prepare for a corner. During that point you really don't want the tail end to move around as if you don't know how to control or compensate for it the car could end up spinning. This is also the point of heel toe'ing in a manual car. If you don't rev match your downshift while breaking from a high speed it can buck the back end also.
My guess is we haven't heard too much about it as the majority of us use these cars for canyon carving and street driving. Someone linked this on Jackie Dings instagram and he said he didn't have a huge issue with this when he tracked the first car he had so who knows. I believe his second more track prepped car has SPL suspension components in the back negating this bumpsteer issue.
When I got my car it felt the same, quite vague even, esp when compared to my GT86I mentioned it somewhere on this forum, some time back, that when I do a hard acceleration, the front end gets drifty. I don't like it, but am aware of it now.
You nailed it. The first time, it was, what the hell! I had to keep a light control on the wheel and just lightly respond but I am surprised, with everything involved and what this vehicle is, that this would not be more solid. It isn't a 60's Corvair after all.When I got my car it felt the same, quite vague even, esp when compared to my GT86
It had an 1/8" to much toe in & felt better after the alignment (fancy having to do an alignment on a new $100K vehicle)
It has always felt vague under extreme acceleration, it sort of wonders around on the road, kinda like low rear tire pressure
I couldn't pin it down, I thought it was the rear but wasn't sure, I'm used to solid rear axles
It would be nice if there was a relatively simple fix