Pulleys

This happened to me and I called my dad for help. He told me that it would be really stupid to fix on my own, and usually he will fix anything.
The problem is that garage doors have very strong springs that will injure or kill and unprofessional. He told me that it would be better to just get someone to do it who knows how, and he even offered to pay.

Just go through the yellow pages and call everyone who does garage repair. Most people wanted 150, but I got someone for 75 who did a great job.

They allow for a mechanical link from the engines crankshaft, to other components of the vehicle. (Via the drive belt)

They also allow for variable ratio's, to allow for items attached to the belt to turn at different speeds then that of your crankshaft.

Example:

Your crankshaft turns at 1000RPM,

Your alternator turns at 2000 RPM.

This is achieved by having a smaller pulley on your alternator then what is on your crank.

You can also have idler pulleys, and these merely provide a means to effectively route the drive belt.

archimedes

do not know probally no one does SOMEONE help

Is it serious if my car idler is making a noise?

Braided nylon or nylon jacketed polyprpoylene kernmantle are both good choices.

remove center bolt and use the required puller

1. idk but pulleys were made in Sicily 250 B.C

It's pretty easy on an aircooled engine. The bolt that holds it on doesn't get very tight, so what you need to do is to lock the crank pulley somehow--I've done it by just squeezing the belt together real tight with my hand--and removing the bolt with a 30mm socket. If you stil On a watercooled engine you'll need an impact wrench. In either case, once the bolt is out the pulley slides off the crank. You might need a puller on a watercooled engine; I never have used one on an aircooled engine--you can normally just wiggle the pulley a little and it slides off. Helpful hint: on an aircooled car put a little high-temp grease on the end of the crank before you put the pulley back on. There's a Woodruff key in there so it won't spin around, but it will make getting it on and off easier. I wouldn't do it on a watercooled car because on those there isn't anything to keep the pulley from spinning except for LOTS and LOTS of torque on the bolt.

change the direction of force

Ooo,...this sound like it would be fun! Well probably one of the most interesting things about pullys is that if the pully is on the movable part of the line it provides you with a mechanical advantage of 50%! That is to say, properly set up you can lift a 10 pound weight with just 5 pounds of force. If the pully isn't moveable it only provides a fixed point from which to change the direction of pull and no mechanical advantage at all! In this it take 10 lbs of force to move a 10 lb weight. This should be pretty easy to show a 3rd grader and fun too!

effort arm

Yes you can fly two flags on one pole all you have to do is make two knots each to the length of your flags and tie them to it or if you have clips on your pole clip the first flag to the top clip then clip your second flag to the bottom of the first one then place clip number 2 to the end of the 2nd flag then let it be chur

All of them.

one example of a single pulley is a clothes line . another example is a ................ what do you think because I need to think more on this.

Use a rattle gun if the engine is out. If its still in the car disconnect the disributer. Put a powerbar and socket on the pulley and lean on the xmember. Crank the engine over over for a split second. Heaps more info on forums. Google it or look on the gtr forum.

an elevator

If it is a push lawnmower, probably (Although I have seen one with an electric starter). If it is a riding mower, probably not. On a push mower, the hub where the blade is bolted onto is attached to the engine driveshaft via a keyway and a fastener (nut). Therefore, the blade is not driven by a pulley. On the contrary, on a riding mower, the blades are usually driven by a belt that transfers motion from the engine shaft pulley to another pulley that spins the blade(s).

No, the principle behind scissors is the "lever" and "shear".

a fixed pulley changes the direction you are executing the force in. fixed pulleys are made to work with gravity which makes the work you must use less than if you were lifting straight up and against gravity.

They convert distance into force. So putting a pulley on a load would result in you having to haul up twice as much rope, but lifting about half of the weight of the load. Multiple pulleys increase rope length and further decrease force required to move the load.

Keep in mind that the supercharger is driven off of the pulley clutch.

Check the specs for the sizing of the N/A vs. S/C.

Many companies offer an oversized pulley for a S/C if you want to change your boost range and shift it a little higher in the RPMS.

I've had luck with the NST pulleys and it comes with a new kit for all of your pulleys.

Check it out if you don't mind going with non-oem parts.

grooves

A block and tackle pulley system typically consists of two or more pulleys mounted on blocks, with one end of the rope attached to a fixed point and the load attached to the other end. By pulling on the free end of the rope, a person can lift heavy loads with less effort due to the mechanical advantage provided by the system.

It's called a fixed pulley, the amount of weight on the other end of the rope, is the amount force that you use to pull it up.