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Topic: Drum brake

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	Encyclopedia article: Drum brake (Site not responding. Last check: 2007-10-08)
		A drum brake is a brake (A restraint used to slow or stop a vehicle) in which the friction (The resistance encountered when one body is moved in contact with another) is caused by a set of shoes or pads that press against the inner surface of a rotating drum.
		The shoes in drum brakes are subject to wear and the brakes needed to be adjusted regularly until the 1950's introduction of self adjusting drum brakes.
		Drum brakes with internal shoes have a particular disadvantage; when the drums are heated by hard braking the diameter of the drum increases due to the expansion of the material and the brakes must be further depressed to obtain effective braking action.
	www.absoluteastronomy.com /encyclopedia/d/dr/drum_brake.htm (506 words)

	Disc brake - Wikipedia, the free encyclopedia
		They offered much greater stopping performance than comparable drum brakes, including much greater resistance to "brake fade" (caused by the overheating of brake components), and were unaffected by immersion (drum brakes were ineffective for some time after a water crossing, an important factor in off-road vehicles).
		Disc brakes are also more reliable than drum brakes due to the simplicity of their mechanics, the low number of parts compared to the drum brake, and ease of adjustment.
		The brake pads are designed for high friction with brake pad material embedded to the disc in the process of bedding while wearing evenly.
	en.wikipedia.org /wiki/Disc_brake (1883 words)

	Drum brake - Wikipedia, the free encyclopedia
		Self adjusting brakes operate by a ratchet mechanism engaged as the hand brakes is applied.
		In the 1960s and 1970s brake drums on the front wheels of cars were gradually replaced with disc brakes and now many cars use disc brakes on all wheels.
		This type predated the modern drum brake, and was later often used for the parking brake on the central driveshaft.
	www.wikipedia.org /wiki/Drum_brake (596 words)

	Drum brake (Site not responding. Last check: 2007-10-08)
		In the first drum brakes in car s the shoes were mechanically operated with levers and cables.
		In the 1960s and 1970s brake drums on the front wheels of cars were gradually replaced with disc brake s.
		This type of band brake is also used in automatic transmission s and aerobic exercise cycling equipment.
	www.serebella.com /encyclopedia/article-Drum_brake.html (444 words)

	Brakes: Drum vs. Disc (Site not responding. Last check: 2007-10-08)
		They were called drum brakes because the components were housed in a round drum that rotated along with the wheel.
		Fluid was used to transfer the movement of the brake pedal into the movement of the brake shoes, while the shoes themselves were made of a heat-resistant friction material similar to that used on clutch plates.
		Though disc brakes rely on the same basic principles to slow a vehicle (friction and heat), their design is far superior to that of drum brakes.
	www.edmunds.com /ownership/techcenter/articles/43857/article.html (1065 words)

	AUTOS & BOATS : Brakes : Servicing Drum Brakes : DIY Network
		Drum brakes are found most frequently on the rear of a vehicle.
		Before a drum can be resurfaced, it must be measured to determine whether there is sufficient thickness left so that removing a miniscule layer of the inner surface won't result in brake drums that are too thin.
		This measurement is taken with a drum micrometer (figure D), a device that measures the interior diameter of the drum in increments of thousandths of an inch.
	www.diynet.com /diy/ab_brakes/article/0,2021,DIY_13682_2271408,00.html (1114 words)

	Sheldon Brown's Bicycle Glossary D
		A hub brake, similar to an automotive disc brake, consiting of a disc which screws on to the hub and a caliper attached to the frame or fork which squeezes on the disc.
		A drum brake is a hand-operated brake which is built into, or attached to the hub of a wheel, with shoes that press against the inside of a cylindrical drum.
		Drum brakes are commonly used as drag brakes on tandems.
	www.sheldonbrown.com /gloss_d.html (3681 words)

	Brakes - A Short Course on How Brakes Work
		With drum brakes, fluid is forced into the wheel cylinder which pushes the brake shoes out so that the friction linings are pressed against the drum which is attached to the wheel, causing the wheel to stop.
		Brake drums have a maximum diameter specification that is stamped on the outside of the drum.
		On drum brakes, the cable pulls on a lever mounted in the rear brake and is directly connected to the brake shoes.
	www.familycar.com /brakes.htm (3544 words)

	Drum Brake Pointers, Bill Williams, Brake & Front End, December 2004
		The brake shoe-to-drum contact may be effected due to the different brake shoe manufacturing tolerances and variances in brake drum diameter.
		Drum brake drag caused by hydraulic problems is not common because it requires about 80 to 100 psi to start read shoe engagement.
		Drum brake lockup: If the problem is occurring during light or normal braking, the problem will generally be related to a mechanical cause.
	www.babcox.com /editorial/bf/bf120412.htm (2274 words)

	Dan's Motorcycle
		Drum Brakes are used mostly on the rear wheel these days.
		The one on the brake drum, not the one on the handlebar.
		When the brake starts to drag, keep turning the wheel and get a good " feel " of how much drag there is. Now tighten the rod going to the other brake cam lever till the drag " feels " about twice as much as before.
	www.dansmc.com /drumbrakes.htm (640 words)

	Drum brake
		Akebono Brake industry Co., Ltd. - Manufacturer of disk and drum brakes, disk pads, brake linings clutch facings, and real estate.
		Dueal Industrial Co., Ltd. - Manufacturer of drum brake adjuster screw assemblies, jounce cups, and transmission mounts.
		Industrial brakes - We manufacture thruster and thrustor brakes, drum brakes to standard DIN 15435, disc brakes, couplings.
	www.nebulasearch.com /encyclopedia/article/Drum_brake.html (500 words)

	Brake Drum Service, Bill Williams, Brake & Front End, January 2002
		The majority of non-servo drum brakes self adjust when braking when the vehicle is moving in the forward direction.
		This is the cause of the misalignment evident on the shoe’s friction surface.
		Rear drum brakes will probably be around as long as hydraulic brakes, so making sure you are on top of what their service involves is an important aspect of providing quality service to your customers.
	www.babcox.com /editorial/bf/bf10216.htm (3013 words)

	Read about Drum brake at WorldVillage Encyclopedia. Research Drum brake and learn about Drum brake here! (Site not responding. Last check: 2007-10-08)
		friction is caused by a set of shoes or pads that press against the inner surface of a rotating drum.
		(Self adjusting brakes operate by a ratchet mechanism engaged when the car is braked while moving backwards.) In the 1960s and 1970s brake drums on the front wheels of cars were gradually replaced with
		For this reason drum brakes have been superseded in most modern automobiles and light trucks with at least front wheel (often now four wheel)
	encyclopedia.worldvillage.com /s/b/Drum_brake (384 words)

	Brakes - Rear Drum - Brake Shoes
		Check the condition of the brake shoes and linings, retracting springs, hold-down springs and the brake drum for signs of overheating.
		Assemble the parking brake lever to the trailing shoe by installing the spring washer and a new horseshoe parking brake lever pin retainer.
		The adjuster socket blade is marked R for the right-hand or L for the left-hand brake assemblies.
	www.denniswolfe.com /Taurus/RepairGuide/Brakes/Brakes_Rear_Drum_Shoes.htm (802 words)

	Howstuffworks "How Drum Brakes Work"
		Drum brakes work on the same principle as disc brakes: Shoes press against a spinning surface.
		Many cars have drum brakes on the rear wheels and disc brakes on the front.
		Drum brakes have more parts than disc brakes and are harder to service, but they are less expensive to manufacture, and they easily incorporate an emergency brake mechanism.
	auto.howstuffworks.com /drum-brake.htm (98 words)

	Arai Drum Brake Information From Precision Tandems
		The Arai brake is a cable operated drum type brake which threads onto the left side of a "tandem hub" designed for the application.
		The brake is generally not used as a primary brake to stop a tandem but it is often very useful as an assist brake when extra weight is involved such as on triplets, quads, heavy teams, or loaded touring.
		If braking power is less than normal, i.e., I view normal as being able to lock up the rear wheel with drum brake application alone when no stoker is on the bike, you can sometimes improve the friction relationship by sanding the brake shoes and drum surface.
	www.precisiontandems.com /arai.htm (1670 words)

	DISC
		Remove the rubber drum brake hose from the drum brake line at the strut tabs to the chassis (not shown).
		Install the parking brake cable to the underside of the car, reusing the same bolts and locations as for the drum brake cable.
		I've also noticed that the parking brake is a fair bit sloppier than the old drum setup, since the rear discs utilize a separate inner drum parking brake.
	wac.addr.com /auto/obs/disc/disc.html (1773 words)

	Modifying a Drum Brake Hub for Stub Axle Usage
		The Sachs VT 5000 Drum Brake hub is the most popular hub for tricycle design.
		Remove both brake shoes by removing the retaining clip from the stationary brake shoe axle.
		Again, work the brake shoe so that it eventually clears the cam retainer, be careful not to place too much stress on the brake shoe as it could break at the stationary end.
	www.ihpva.org /com/PracticalInnovations/BuildingStubAxleHubs.htm (1541 words)

	Drum brake pad replacement
		What is happening is that a lip, caused by the drum wear, has formed on the outer edge of the drum and is catching on the brake shoes.
		Another problem is that the drums can get stuck to the shoes if the car has been sitting for a long time, especially if the emergency brake has been set.
		Trying to get the metal brake lines to re-connect to the wheel cylinder after the cylinder is mounted can be a real pain and you can strip either the nut or the threads in the cylinder.
	www.allpar.com /fix/brake-drums.html (2433 words)

	Mustang FAQ and How To's (Site not responding. Last check: 2007-10-08)
		Converting 4-wheel drum brake Mustangs to front disc brakes is a popular and effective way to increase the braking power of older Mustangs (and other Ford and Mercury automobiles).
		What makes this swap attractive is the fact that the entire spindle and brake assemblies (but not necessarily the individual parts) of many 1960's and 1970's Ford, Lincoln, and Mercury autos are directly interchangeable.
		Converting to power brakes and all those issues (pedal pivot location, master cylinder, feel,...) are not covered here.
	www.vintage-mustang.com /topics/faq/drumtodisk.html (982 words)

	Drum Brake Adjustment Procedure
		As you apply the brakes there is only so much travel in the master cylinder's piston stroke, thus moving the fluid through the lines, wheel cylinder, etc. If the slack isn't taken up by proper adjustment, you waste all or part of that movement.
		The idea is that if your drums have been turned (machined) too much, or are worn past their limit, the contours won't match and only part of the shoe friction surface will hit the drum.
		Front brakes: Take a rasp or heavy file and cut a 45 degree bevel, 1/4 inch (6 mm) wide across both end edges of each brake shoe friction surface front and rear (this will help to keep the shoes from grabbing).
	www.type2.com /library/brakes/brakeadjust.html (1452 words)

	Brake drum - brake, in technology. The Columbia Encyclopedia, Sixth Edition. 2001
		This document is intended for outboard mounted brake drums and disc wheel hubs used on Class 7 and 8 commercial vehicles.
		Drum brakes have two semicircular brake shoes inside a rotating brake drum; when actuated, they press against the inner wall of the drum.
		A set of brake shoes that are fixed in position and act on the drum by expanding.
	siteslinks.com /q/brake-drum.htm (461 words)

	[No title]
		I chose to buy the hardware for the 84 Lincoln (the only real difference is the two springs that hold down the brake shoes via the "nails") because they were in stock and the 68 set wasn't.
		In the second picture you can see the difference in the sizes of the brake drums and the shoes, and also see how the 84 Lincoln drums have the fins for cooling.
		Here's Autozone's part numbers for the drums and shoes: Drums 8896 $54.99 Shoes 481 $10.99 I don't have any scientific data for whether or not this conversion really helps braking, but I can say that when I had 4 wheel drum brakes I was on more than one occasion literally scared for my life.
	mustangsandmore.com /ubb/RearBrakesbySamGriffith.html (645 words)

	Power of Arai drum brake
		I have a KHS tandem Romania 2001 with V brake on it.
		Anticipating your braking can also help; in other words, do not panic brake, but start feathering (alternate rapidly: on/off, front/rear) brakes before you are into a full-tilt descent.
		Of course installing a drum brake as a drag/third brake with stoker control lever would also alleviate your problem, but would cost more and add considerable weight to the back wheel.
	www.bikeforums.net /showthread.php?goto=newpost&t=44878 (582 words)

	Drum - Drum Pump (Site not responding. Last check: 2007-10-08)
		Well, www.AutoPartsPlace.com is now offering cross-drilled brake discs from Brembo and Zimmerman to help improve your ride.Why Cross Drilled Brake Rotors?Cross-drilled brake rotors reduce brake fade and improve rotor cooling (temperatures can be reduced by as much as 200 degrees during extreme braking when compared to stock rotors).
		An electric trailer brake controller is a device that supplies power from a tow vehicle to a trailer's electric brakes.
		At approximately 15,000 miles brakes began pulsating and squeaking very bad, by 19,803 I had the brake rotors resurfaced by a Midas mechanic after the dealer told me this was normal maintenance and not covered under warranty.
	www.online-drum-resources.com /directory/drum-brake.html (1146 words)

	Sturmey Archer front drum brake on touring bike?
		drum brake because it's a lot easier to run the cable to it.
		Drum brakes apply their reaction torque in a direction that does not
		Compared to Sachs/SRAM drum brake hubs, Sturmey Archer units are roughly equal, maybe a bit better.
	www.cyclingforums.com /showthread.php?t=21067 (1436 words)

	Drilled Drums
		But the main benefit is the fact that when drums are vented properly, so as to eliminate balance and material integrity problems, they virtually eliminate fade, which is.the primary reason discs replaced brakes while racing at the dry lakes.
		Gasses are vented as well, as the holes create what amounts to a venturi effect, venting gases created by compression of air between the shoes and drum that would otherwise be trapped in a stock, unvented drum, hindering braking efficiency.
		Surprisingly, a brake disc weighs three times what a drum does, and calipers are four times heavier than a wheel cylinder.
	www.chtopping.com /CustomRod4 (658 words)

	Drum Brake Question - Chevelle Tech
		I am changing from a 10 bolt to a 12 bolt and took the brakes off my 10 bolt and transfered them to my 12 bolt.
		The problem I am having is the drum couldn't fit around the studs.
		I agree, the drum registers on the axle center not the studs.
	www.chevelles.com /forums/showthread.php?s=dbd7fa66d854d8763b00580d8194be23&goto=newpost&t=109288 (248 words)

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