Q:How to improve the efficiency of locomotive wheel polishing?

After the lathe processing, the direct use of Hao Ke can be processed, instead of polishing, Ra raised to 0.2, to meet the processing requirements, greatly enhance the valve surface quality, reduce the valve carbon deposition

Q:A turbine wheel is positioned such that the center of the wheel sits 26 feet off the floor of an electric steam generating plant. The wheel has a radius of 18 feet and is turning at 1rev/8sec. Design a Trig Model that will predict the height of the sensor, located at the lowest point on the wheel at t = 0 seconds, from the floor of the plant. The Trig model should be in the form of h(t)=(a)cos((b)(t)+c)+d , where h(t) measures the height of the sensor from the floor, in feet, at any time t in seconds.

The wheel is turning at 1 rev/ 8 sec, so 1/8 rev/sec, i.e. pi/4 radians per second ( = 45 degrees per second) So the angle the wheel has rotated by at time T is T*pi/4 rad = 45*T degrees - we will denote the angle by x for clarity. The radius of the wheel is 18 feet, so after time T, the sensor will be 18-18cos(x) feet higher than it was when it started the rotation. To see this, draw the wheel having rotated through some angle y<pi/2 rad (=90 degrees), and use trigonometry to work out the vertical distance between the centre of the wheel and the sensor. Since you know the radius of the wheel, you can the work out how much height the sensor has gained in terms of the angle the wheel has rotated. Now, for any time t, we know that the sensor will be 18(1-cos(x)) feet higher than it started. We also know that at t=0 the sensor was at the lowest point of the wheel, which was 8 feet off the ground (since the centre of the wheel was 26 feet off the ground and the wheel has radius 18 feet) Hence, at any time t, the sensor is -18(cos(t*pi/4)-1) + 8 feet from the ground.

Q:Or even worse, a fifth wheel? I was a third wheel last night. It was lamer than I remember it being! I hate being a tag along! : (

Yes! Meeting a best friend's new gf. She thought I had a crush on him and kept getting jealous, it was so awkward. She was a crazy betch. At the end of the night, she straight out said Lara, if you want him, just tell me! I'm like WHAT THE HELL?!

Q:What is the difference between flywheel horsepower and wheel horsepower

There are mainly two ways to measure horsepower; at the drive wheels or at the flywheel of the engine. It's much easier on a chassis dynomometer IF the engine is IN your car, but if the engine is out of the car AND you have access to a dyno stand then that's a lot more fun (and expensive).

Q:replaced bearing gear and wheel.

you measure the inside of the tube, not the outside

Q:What is the widest tire size I can put on a Factory Ford aluminum F150 wheel? Wheel width is 7.5 inches. 04 F150 Heritage.

Lugnutz is right on the money! Good answer, I will come by and check that out for you. I will check and make sure you have a tight seal and see what I can do about your oil leaking! PLUG IT UP!!

Q:Why do not the four wheels of the car be completely closed?

The front wheel needs to turn, can not be closed (a larger range, the front wheel wrapped up on both sides of the drum bag is very powerful) rear wheel can be closed (the rear wheel does not need to turn, because there is differential this thing)

Q:does it matter if i have 48 wheels or 54 wheels? whats the difference?

Cold air is denser than hot air so you are getting more air in reality more air+ more fuel more hp.

Q:Right now I‘m rocking some yellow orangatang stimulus wheels and I love them, I was just wondering if there are any wheels out there that slide better? I heard hard wheels slide really well. So which wheels, if any, slide better and easier than my orangatangs. if u no of any, could u list the specific kind. ThanksP.s.-I‘m not trying to brag about my wheels if it kinda sounds like thy

Check the Yellow Pages; I'm pretty sure there's several places that can either supply new tires for 'scoots or remove and replace them. Try the nearest Harley-Davidson dealership, for example. You might also try the nearest Goodyear or Firestone shop. Good luck!

Q:Mousetrap cars can have 3 or 4 wheels, which one is better?Some have large wheels in the back and small wheels in the front, while some have large wheels in the front and small wheels in the back, does this change anything?I‘m making a mousetrap car with distance in mind, not speed.

Yes. Cars can be struck by lightning. No. The tires do not protect them. Think about this for a moment, a giant electric spark just jumped through a VERY LARGE distant. What is going to keep it from also jumping the twelve inches or so of air gap from the car to the ground? Besides which the carbon black used in the tires to make them black (you did know that both natural and synthetic rubber are black because of the additives, right?) is very conductive at the voltages involved so they don't do that good a job of insulating the car in the first place. That said the metal of the car might protect you from the lightning by shunting the electricity around you. I say might because the metal is discontinuous and is not a perfect Faraday cage.