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Why Drum Brakes?

Started by triangleforge, June 19, 2015, 08:26:43 AM

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Triple J

Quote from: the_Journeyman on June 19, 2015, 05:43:56 PM

Heavy trucks have drums.  Our bus mechanics say that drums are more durable and lower maintenance than discs on heavy stuff.  I've seen a few motor coaches with front air powered discs, but not many.


Understood. Your Dakota isn't a heavy truck though, nor is my 2500. Discs work fine, so the reason you were given most likely wasn't true. That's all I was saying.

JohnEE

Drum brakes are the devil. Luckily they don't need to be replaced that often. It is not just Kia ether, Toyota still puts them on the Tacoma.

Randimus Maximus

Quote from: Satellite smithy on June 19, 2015, 12:36:39 PM
We should shun Randimus on principle.

Hey.  >:(

You know I don't call any shots.

And TF stills me a beer that I was never able to connect with him on.  :P  [beer]

Bick

Quote from: Randimus Maximus on June 20, 2015, 06:33:10 PM
Hey.  >:(

You know I don't call any shots.

And TF stills me a beer that I was never able to connect with him on.  :P  [beer]

You saying Akio was ordering all those shots for you that night?  [shot]
It's all in the grind, Sizemore. Can't be too fine, can't be too coarse. This, my friend, is a science. I mean you're looking at the guy that believed all the commercials. You know, about the "be all you can be." I made coffee through Desert Storm. I made coffee through Panama while everyone else got to fight, got to be a Ranger.

* A man can never have too much whiskey, too many books, or too much ammunition *

the_Journeyman

The drums on my Datsun have about 6 parts.  Two springs, two spring retainers, two shoes, then the drum.  They're not bad.  They stop about like Fred Flintstone brakes though.  If I relied on them I'd be dragging my boots to stop!

JM
Got Torque?
Quote from: r_ciao on January 28, 2011, 10:30:29 AM
ADULT TRUTHS

10. Bad decisions make good stories.

Randimus Maximus

Quote from: Rotor Head on June 20, 2015, 06:37:32 PM
You saying Akio was ordering all those shots for you that night?  [shot]

Which night?

Bick

It's all in the grind, Sizemore. Can't be too fine, can't be too coarse. This, my friend, is a science. I mean you're looking at the guy that believed all the commercials. You know, about the "be all you can be." I made coffee through Desert Storm. I made coffee through Panama while everyone else got to fight, got to be a Ranger.

* A man can never have too much whiskey, too many books, or too much ammunition *

DarkMonster620

Quote from: the_Journeyman on June 20, 2015, 06:40:26 PM
The drums on my Datsun have about 6 parts.  Two springs, two spring retainers, two shoes, then the drum.  They're not bad.  They stop about like Fred Flintstone brakes though.  If I relied on them I'd be dragging my boots to stop!

JM
wished I had the $$ to get your Datsun and rebuild-remanufacture it . . .with some perf enhancements . . .
Carlos
I said I was smart, never that I had my shit together
Quote from: ducatiz on March 27, 2014, 08:34:34 AM
Ducati is the pretty girl that can't walk in heels without stumbling. I still love her.
"When you have eliminated all which is impossible, then whatever remains, however improbable, must be the truth."

Popeye the Sailor

This message is hidden because Randimus Maximus is on your ignore list.  [cheeky]
If the state had not cut funding for the mental institutions, this project could never have happened.

Speedbag

My old Cougar has 4-wheel drums. Stellar braking performance.  :P

I've driven my new Mustang after driving it and almost put myself through the windshield the first time I brake.....  [laugh]
I tend to regard most of humanity as little more than walking talking dilated sphincters. - Rat

Langanobob

I remember learning years ago another economic reason for the continued use of drum brakes on cars and trucks.  Disc brakes are pretty much intolerant of axle end play and drum brakes will work with some axle end float, allowing the use of a cheaper bearing system.  Not sure if the present rear axle drum brakes are mostly all on old school rigid axles but it seems that way.  Newer cartridge style wheel bearings are usually found on disc brake systems?

Bob

the_Journeyman

Quote from: Langanobob on June 26, 2015, 02:57:24 PM
Not sure if the present rear axle drum brakes are mostly all on old school rigid axles but it seems that way. 

Very possible.  My truck is independent suspension with the two half-shafts, while the rear is a solid axle.  Not modern, but my 280Z is the exact same configuration.

JM
Got Torque?
Quote from: r_ciao on January 28, 2011, 10:30:29 AM
ADULT TRUTHS

10. Bad decisions make good stories.

Rameses



On the topic of price, you were saying that drums are more expensive than rotors...

But last time I checked, calipers were a hell of a lot more expensive than wheel cylinders.



Howie

Quote from: Langanobob on June 26, 2015, 02:57:24 PM
I remember learning years ago another economic reason for the continued use of drum brakes on cars and trucks.  Disc brakes are pretty much intolerant of axle end play and drum brakes will work with some axle end float, allowing the use of a cheaper bearing system.  Not sure if the present rear axle drum brakes are mostly all on old school rigid axles but it seems that way.  Newer cartridge style wheel bearings are usually found on disc brake systems?

Bob

Quite true!

sno_duc

If you deal with drum brakes much.
Take an old spoke (talk to one of you motocross riding friends) and a chunk of broom handle.
1) Drill a 1/8' hole cross ways thru a 6' piece of broom handle in the middle.
2) Slip spoke thru hole and put spoke nipple back on.
3) cut spoke to length (6' to 12")
4) heat other end up with torch and bend a nice hook.
5) file end of hook sharp

You now have something that will grab a spring and allow you to pull to your hearts content while keeping your hands away from sharps edges waiting to cause blood loss, and much cheaper than what Snap-On charges for the same basic thing.
A conclusion is the place you got tired of thinking