nearly school hols. but science teach has spolied it. For homewk I have to figger out why a car wi=th no power steerng acn be steered round a corner by a driver using just one fin=ger… Why can he turn a heavy car without doing much hard work and gettng tired. Im clueless
Got my dad to tryu it and he could but it didnt help any
thanx fore any help.
is it a slot car? you know the ones that run along a small track and you have a little controller to change its speed?
but those slot cars arent really that heavy so you aren’t really turning a heavy car.
heavy in relation to what?
I think the point here may be that it is genreally easier to turn the wheel at speed, to the extent that most luxury car manafactureres turn the power assist off over about 70mph on their cars. Power steering is much more useful for manouvering, when the steering is very heavy. This is because when you’re stationary (or moving at low speeds) your effort is going in to twisting the tyre relative to the ground, which requires large force as the tyre has a large coefficient of friction because it’s designed to grip the road. When travelling along you only have to turn the wheels a little relative to the ground before the car alters its direction so that you’re travelling in the direction the wheels are pointing, and the force reduces to zero again.
It my also have something to do with the fact that at higher speeds turns tend to be less tight i.e. the freeway doesnt have sharp 90 degree turns like turning at the corner of a block does. If we imagine for instance turning in a carpark at 5 mph, and turning by the same amount in the same time on a major road, the turn on the major road will require the wheel to be turned much less because you’re travelling a much larger distance in the same time due to the higher speed, so the turn is less severe.
I’m not sure how correct this stuff is, but I thought it would atleast give you a starting point.
well i wouldnt say going down the highway you would call it a corwer. i would call it a bend.
a corner is a corner, a smooth bend in what you would find in a freeway.
thats what i think at least.
in relation to an actual car.
define actual car. a slot car is an actual car.
an car that you drive, its not rocket science.
you still drive a slot car.
you control the acceleration which is what you do in a normal car.
This isn’t a semantics thread, obviously the original problem concerned a car capable of conveying people.
And incidently you control both the velocity and acceleration of a car.
My dad has a 92 swift with no power steering and i can drive it with 1 finger around corners no problems. It’s not that hard once you get used to it. Now i do it everyday. 
how heavy is it?
Do you mean the car or the steering??
thats what im thinking. im not sure. do they mean heavy as in weight of the car or heavy as in it is hard to turn.
im sure you could turn it easily while your going(we had a 1970’s leyland 6 tonne truck with no power steering, you could spin the wheel half way round the world before it would lock. the play in the wheel was about half a revolution soou could drive down the road and turn it 180 degrees and still go the same way it looked so cool. it was easy to turn while driving. but while going slow you really had to tug it with 2 hands.)
steering heaviness is of course a function of the steering geometry, the fact that you had to spin the wheel a long way to lock suggests it was very low geared, hence you didn’t require power assistance.
only at speed. when going very slow you really had to get 2 hands on it and move your whole body
i was going to post what kington99 said early on but only using normal peoples english but now i cannot be bothered because i have seen that he already did it.
Where my dad works we have Toyota Dyna 100-200 diesel. I sometimes work there if i need the extra $$$. Man they’re fun to drive. Even the ones without power steering are fun. I can take off from lights in 2nd gear hahaha. The upside to having them is they’re are cheap to fix becuase of them being toyotas. The down side is when the box is full and you’re driving through harsh rain and some guy just presses the brakes hard. Luckily my dad told to keep my distance in the rain. So i’ve preety much avoid having prangs and stuff. It’s all good:D 
Oh and BTW my dads car is a 94 not 92 my bad. It weighs just under a tonne now and it has 41kw now instead of 39kw as it says here. It’s not much but the fuel economy to have improved slightly.
http://www.redbookasiapacific.com/au/vehicle/specs.php?key=SUZU94BF
Where my dad works we have Toyota Dyna 100-200 diesel. I sometimes work there if i need the extra $$$. Man they’re fun to drive. Even the ones without power steering are fun. I can take off from lights in 2nd gear hahaha. The upside to having them is they’re are cheap to fix becuase of them being toyotas. The down side is when the box is full and you’re driving through harsh rain and some guy just presses the brakes hard. Luckily my dad told to keep my distance in the rain. So i’ve preety much avoid having prangs and stuff. It’s all good:D
Oh and BTW my dads car is a 94 not 92 my bad. It weighs just under a tonne now and it has 41kw now instead of 39kw as it says here. It’s not much but the fuel economy and take-off seems to have improved slightly.
http://www.redbookasiapacific.com/au/vehicle/specs.php?key=SUZU94BF