Car sick in the back seat?

[tttomttt]

Originally Posted by andrewwynn

A typical driver lateral gforce plot for a 270° off ramp



Hold the steering wheel with your knee and smooth out all the bumps.

You got to love the things you learn on here. That is a great tool to learn. I always learned that in a curve you watch the outside line and it guides you through the turn without variation.
T

[andrewwynn]

Except so many off ramps aren't even close to circular. I usually end up a foot over the fog line when I take a circular path but I will usually take the smoother path rather than follow the drunken sailor path the construction crew made.

I guess a stick and a string is too high tech for the guys that make off ramps. If nobody rats me out to the wife I'll take some spy video next time she takes an off ramp then myself so I can show you what I mean real world. You can feel it in your gut if you are a passenger also. Any time the driver deviates from a circle or a straight line the car will wobble because the sideways force is at the tire patch so laws of physics means you'll not only get lateral G force but a roll moment also. Each steer input will result in about 3-4 "sway" wobbles as the shocks soak up the spring rebound.

Anybody see a car a car driving without shocks it's hilarious. Talk about car sickness, it was making me nauseous just watching as I followed.

I just remembered the X5 steering wheel too high to use my knee directly as the stiffening agent so I will brace my elbow on the door instead. Go through a long curve with your elbow braced vs. just holding the wheel with one arm and record the g forces with your phone and compare the difference.

[crystalworks]

Originally Posted by andrewwynn

100% of drivers I've monitored will wiggle their way through a 270° off ramp with typically 20 to 30 steering inputs.

That's A LOT of steering input. Going to pay attention to myself next time I'm in a clover leaf. I use an apex line through turns usually and I'm going to feel disappointed if I actually correct 20-30 times through a cloverleaf.

[StephenVA]

Originally Posted by Clunk84

ginger biscuits !! always helps when I'm out boat fishing.. also never had any issues with people in the back of mine

we call them ginger snap cookies here across the pond. GREAT IDEA will try on wife...

[andrewwynn]

Better drivers will maybe make 10-15 steering inputs over a 270° it's enough to make me a little queasy. I find a line and hold the wheel in one place as long as I can using the fog line as a "rough estimate". As long as I don't run out of safety lane I won't change course usually then when time to pull out of the turn I will robotically return the wheel to center at a constant °/second motion using dynamic tension between both arms (eg push left with 3# with right hand and right with 2.5# of force with left hand). Or with smaller cars just lock the knee into the wheel.

I've done lots of g force plots of my corners vs other drivers and it's not surprising to me that people don't get car sick in my car but do with other drivers. "wiggly jiggly" is the best way to describe an average driver's normal turn: about 10-12 steer inputs on a typical 90° city turn. Me: I turn a constant tighter radiius to the Apex and hold the wheel against auto straighten out of the turn and try to match the same rate of angular change on the way out. Oh and important: smooth throttle also counts: average driver's won't use smooth throttle application as well.


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[StephenVA]

LOVE the steering corrections on off ramps conversations. Bad example: I have a brother who fancies himself as a great driver. He is the only person I know who drives the clover leaf ramps as if they are square...turn hard, drive straight, turn hard, repeat until the end. 10-20 hard turns per ramp. He is a Electrical Engineer, never got mechanical basics I guess. LOL

[andrewwynn]

Sadly your brother is an average/typical driver. Since I take smooth turns where the only change in lateral acceleration is when I hit a bump, the wiggle jiggle of people driving normally around a curve is very noticeable to me. It's common driving "straight" as well. (As if they are a pinball bouncing off the lane makings)


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[StephenVA]

Originally Posted by andrewwynn

.....It's common driving "straight" as well. (As if they are a pinball bouncing off the lane makings)
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THAT BE HIM.

[bcredliner]

Car sickness is a terrible feeling. Like sea sickness, if the water is flat and the boat is going straight one is less likely to get seasick so some of it could be caused by your X5 or what roads you use.

It is hard for anyone to keep looking at the horizon all the time and once one starts to feel carsick it is hard to get back to normal without an extended pit stop.

As a severe case, as a passenger, if I am not looking to the front I start to become carsick in a minute or two to the point that no matter what I do the initial queasy feeling doesn't go away until I have been out of the car for several hours. I have to prepare for trips. I use the patch. I never leave on an empty stomach, I always take a Diet Coke, Tums and Mentos peppermint candy. Even with the preparation, I still can't look at my phone for more than a few seconds. I can't close my eyes to try to sleep. Riding in the back seat is carsick suicide. Even driving, I have to have cold air blowing on my face and have a diet coke to sip on. Whenever we stop I have to get out and walk around for 10-15 minutes, get back some of my 'land legs'. More frequent stops help. Distractions are worthless, headphones are out of the question.

It's very hard to measure how bad a child feels. I would assume her case is severe and she is not any part of the cause. I would make an appointment with an ear Doc for a checkup and then map out a plan for her. And, as soon as it is possible, let her ride in the front seat. If her case is severe riding in the backseat is never going to work.

[andrewwynn]

@bc. Great description on the whole world of hurt going along with motion nausea.

I got queasy from a plume ride. The ride was a large inner tube shape with a bottom like a life boat. Just me and my son so it acted like a plumb Bob and had me backwards the whole time.

I couldn't shake the nausea for hours. It's brutal.


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