Are all wheels round?
97198
The ones that work are.
938764
you need harder wheels and a higher ABEC bearing for them.:)
25711
If you're at ground-level, then it could be any car, bicycle, skateboard, or scooter.  Even a skier moves parallel to the Earth's surface.  (The Earth's surface happens to be very inclined on a mountain.)  \n\nFarther away from the Earth, it's a circular orbit around the Earth.
199579
Consider the five basic machines, The lever and fulcrum, The inclined plain, The wheel and axle, The screw and the pulley.\n\nStart with a boyscout pine block racer kit, sand the wheels so that the tread is rounded rather than flat to reduce friction. for the undriven wheels put the nails in the wheels and deposit a liberal amount of petroleum based oil on the axle. This will cause the plastic to swell slightly for a good fit to the axles to prevent wobble, be sure to clean all the flash off of the nails first and polish them.\n\nThe driven wheels willneed a fixed axle that connects the wheels.
439803
Yeah, attached to wheels and calibrated according to size.\n\nWorks fine unless you are a skidder on the road, and cover a sizable portion of your journeys with the wheel locked. ;)
292726
4wd is where the front and back wheels have traction.  All the wheels have motion, not just roiling from the force of the vehicle.\n2wd is only one set of wheels having traction.  One set of wheels move the vehicle and the other set just rolls, no force behind them.  Mostly the back wheels.  There are some cars that have front wheel drive.
582290
i am round\nlike earth
1031821
A vehicle's wheels rotate at different speeds, especially when turning corners. The differential is designed to drive a pair of wheels with equal force, while allowing them to rotate at different speeds.\nbut in trains we do not generally do not find steep corners as they are not suitable to lay the tracks.
1147748
They do not stay up by gyroscopic principles.\n\nIf the wheels were heavy enough to behave like gyroscopes you would not be able to turn corners.\n\nThink about it, if the angular momentum of the wheels was enough to stop them tilting under the weight of you and the bike, then they would also be enough to stop you turning the front wheel.\n\nNow ask the question properly :-)
1112602
You can buy a trainer that attaches in place of the wheel so you can spin without going anywhere.\n\nCheck the website for Performance Cycle (or maybe it's Performance Bicycle?)  That's where I bought one for my ex.
9124
A fixed wheel means that there is no freewheel associated with the cog. It's usually just a single cog threaded onto the rear hub, held in place by a lockring.\n\nFixed wheels can be found on track bikes, as well as many bike messenger's bikes. Look at it this way, if the bike is moving forward, the pedals will turn forward. If the bike is moving backwards, the pedals will turn backwards.\n\nIf you find yourself on a fixed gear bike and it's moving, remember this one thing: DON"T STOP PEDALING. You'll end up launching yourself over the handlebars.
1059389
all the other way around
1093289
spinning wheels go round and round
389056
wheels those are not buy yet
1110803
Save your money. If you want to get around on wheels buy roller blades.  They have already started banning "heelys" in schools and other public places because you can get going fast on them and there are huge safety concerns with them.  Children should be wearing helmets etc. like they should be with other wheeled things (bikes, skateboards, roller blades etc.)
243350
Yes.  A wheel in the shape of a circle is going to go significantly farther than a wheel in the shape of a square.
123162
this i probably not what your looking for but tirerack.com allows you to choose color of vehicle while looking for wheels and tires for it