Register now to get rid of these ads!

Technical Disc vs drum

Discussion in 'The Hokey Ass Message Board' started by Mr.Falcon64, Mar 31, 2019.

  1. Budget36
    Joined: Nov 29, 2014
    Posts: 8,397

    Budget36
    ALLIANCE MEMBER

    I like disc brakes over drums just for selfish reasons.
    I have every drum brake tool needed, the funny double bent screw driver thing for adjustment, the tool to remove the retainer clip, the tool with the cup on the end to install the springs and the slotted pliers to remove them
    I have to take them all with me to make changing shoes easy.
    For disc I need a wrench or an Allen wrench, or a torx, and maybe a screw driver to pop a clip off. Then change the pads. Oh. Maybe a 4inch C Clamp.
    But whether you run disc or drums in a pre-65 (or any year I suppose) you can’t compete with the guy in front of you with 4 wheel ABS in a panic stop, especially in bad, wet weather. And the vast majority of vehicles on the road have ABS

    The main thing, as been mentioned before, is you can’t drive you hotrod, custom or classic like you can a import commuter car, etc. if you have to keep backing off from the car in front of you, fine. Just do it. Heck, I drive my OT 4wd Pickup with 4 wheel discs and ABS like that anyways:)
     
    210superair and bobss396 like this.
  2. squirrel
    Joined: Sep 23, 2004
    Posts: 50,919

    squirrel
    Member

    Leave two seconds between you and the car ahead...you should be ok. Unless you're going really fast in something that doesn't stop well, leave 3 or 4
     
  3. gimpyshotrods
    Joined: May 20, 2009
    Posts: 19,877

    gimpyshotrods
    ALLIANCE MEMBER

    Traffic doesn't work that way, at least in my state.

    Even at just two seconds following distance, someone will cram their overlarge SUV in the gap. When you back off, someone will do it again.

    If you try a bigger gap it just gets worse.
     
    Beanscoot and TrailerTrashToo like this.
  4. squirrel
    Joined: Sep 23, 2004
    Posts: 50,919

    squirrel
    Member

    Interesting. I took a trip there last month, in a slightly OT car with 9" manual drum brakes....drove up and down the state a few times...on freeways and surface streets...wandered through downtown LA for a while too....and never seemed to have any trouble leaving enough gap ahead of me to feel confident in my ability to stop. Maybe I'm getting old? I don't know.
     
    finn, 57 Fargo and Truck64 like this.
  5. Bruce Dern
    Joined: Apr 20, 2021
    Posts: 64

    Bruce Dern

  6. finn
    Joined: Jan 25, 2006
    Posts: 980

    finn
    Member

    I would challenge that statement.

    Show us some data. I’m not anti drum brakes. In fact I have a truck and two cars with them, but if you think technology hasn’t improved braking dynamics since the 9” drum brakes of an early sixties, you should get some new meds.
     
    twenty8, Blues4U and HotRod33 like this.
  7. Truck64
    Joined: Oct 18, 2015
    Posts: 5,316

    Truck64
    Member
    from Ioway

    One thing that occurred to me with the setup I have, a strictly manual 4 drum system - the brakes are adequate, though they take time to setup correctly. Most people aren't interested in getting off into the weeds. Drum systems have lots of fiddly bits & springs and geometry that cause people headaches.

    And you better have ate yer Wheaties that morning if you need to make a panic stop. People without any experience will not understand this.

    And I could be wrong on this, but it seems to me an improved braking system by itself isn't necessarily a "good thing", in the case of an old pickup we're still talking a solid front axle and leaf springs front & rear. What I'm getting at, it simply will not handle well at higher speeds and disc brakes might encourage people to get out ahead of their skis, so to speak. They may get into a dangerous situation that they otherwise wouldn't, by driving faster than they should.

    We see the same thing with modern OT cars anyway. Plush, quiet interiors, no "feel" or connection to the road, air bags, plastic foam nerf interiors, anti-lock brakes. All the improved safety technology is wasted to some degree by stupid drivers who ignore road conditions, traffic density, and push everything right up to the limit.

    There is something to be said for staring at a solid steel dash and steering column, without any seat belts that tends to keep you at full awareness when cruising on the highway.
     
    twenty8 and squirrel like this.
  8. HotRod33
    Joined: Oct 5, 2008
    Posts: 2,532

    HotRod33
    Member

    You must be getting old because you just weren't driving fast enough....lol
     
  9. gimpyshotrods
    Joined: May 20, 2009
    Posts: 19,877

    gimpyshotrods
    ALLIANCE MEMBER

    I hat that I keep having to bust this one out, but I am actually an automotive engineer.

    While I no longer work for GM, but there exists there alone over 10,000 pages of detailed information, accounting for hundreds-of-thousands of lines of data, that long ago proved that disc brakes are vastly superior to drums. The superiority in the front is immense. In the rear, somewhat less, but still there.

    There is not any room for debate here.

    Drums are even disappearing from trailer trucks. By the time I left GM, it was a rarity that a truck arrived and departed at the depot with drums on the tractor. They are still out there for sure, and most of the flat land port trucks will have them forever.

    Even every set of axle assemblies that sits in our local rail service yard has a a pair of vented discs on it.
     
  10. gimpyshotrods
    Joined: May 20, 2009
    Posts: 19,877

    gimpyshotrods
    ALLIANCE MEMBER

    Single-samples do not a data set make.

    Drive here for 10,000 days and get back to me.
     
  11. wvenfield
    Joined: Nov 23, 2006
    Posts: 5,477

    wvenfield
    Member

    My car has manual drum brakes. I have no problem driving it. I admit I may not enjoy it as much driving somewhere with a ton more traffic. A traffic jam here is 12 cars.
     
    2OLD2FAST and gimpyshotrods like this.
  12. Many of us drag racing these old cars have disc brakes, at least on the front. It is a no brainer on a fast nostalgia drag car, safety, stopping power and overall performance of the brake system. My chute also helps on the track. LOL
     
    twenty8 and gimpyshotrods like this.
  13. gimpyshotrods
    Joined: May 20, 2009
    Posts: 19,877

    gimpyshotrods
    ALLIANCE MEMBER

    It is all about perspective. West Virginia has twice the population of just the city that I live in, and less than half that of the City of Los Angeles (not the County, or metro area).
     
    wvenfield likes this.
  14. RmK57
    Joined: Dec 31, 2008
    Posts: 2,134

    RmK57
    Member

    On a full bodied car it could be a handful in the shutdown part with skinny front tires, 90/10 shocks, no front anti-sway bar. Not sure who would do such a thing on a street car though.:rolleyes:
     
  15. finn
    Joined: Jan 25, 2006
    Posts: 980

    finn
    Member

    That’s been my experience, even in California. You sort of have to suppress your competitive pride and just roll with the fact that someone is going to fill that gap. It’s inevitable, and, at first, is really tough to back off a little more to maintain the gap.

    Just accept that most drivers are assholes, and roll at an interval that improves the odds that you’re not going to plow into someone.

    Easier to say than to do, though.
     
    Truck64 and squirrel like this.
  16. squirrel
    Joined: Sep 23, 2004
    Posts: 50,919

    squirrel
    Member

    No way would I drive in California for 10,000 days, in anything. I'm not stupid.
     
    Beanscoot likes this.
  17. gimpyshotrods
    Joined: May 20, 2009
    Posts: 19,877

    gimpyshotrods
    ALLIANCE MEMBER

    Or run discs. My Falcon has the largest rotors that will fit in the wheels, and still allow for calipers.

    It has no fewer than 14-pistons clamping the pads, driven by Hydroboost.

    It has little to do with the competitive pride of the driver of an old car, and everything to do with other driver's reckless incompetence.

    I have driven for about 10,000-days since I moved here. The drivers here are no worse than any other place. My the mere factor of population density, there are a whole lot more of them, and thus bad ones. It only takes one bad one to wipe you and your car out.

    I am pleased that both you and Jim have had good experiences here. If you stay longer, you won't. It's just a odds game. Here, they are not in your favor.

    You can just let folks fill the gap, and then back off, but eventually you will be driving backwards....
     
    mad mikey likes this.
  18. twenty8
    Joined: Apr 8, 2021
    Posts: 921

    twenty8
    Member

    A diminishing talent when it comes to driving..............."Patience, grasshopper, patience".
     
    gimpyshotrods likes this.
  19. About 20 years ago I was doing a job in downtown Seattle and commuted 70 miles each way. Like Gimpy said, leave the 'recommended' space between vehicles and some a-hole would fill it. A real white-knuckle drive every day. If I drove my decrepit-appearing truck they wouldn't be so prone to do that, assuming (correctly) that I would hit them if they effed up. Unfortunately, the truck wasn't very economical so it wasn't my first choice. I arrived at work one day with the remains of somebody's taillight lens laying on my trunklid. I'd see rear-ender wrecks every day...

    This was the pre-ABS days, I wouldn't try it with 'vintage' brakes these days.
     
    gimpyshotrods likes this.
  20. 2OLD2FAST
    Joined: Feb 3, 2010
    Posts: 3,989

    2OLD2FAST
    Member
    from illinois

    Sounds like my '57 Chevy in 1967..
     

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.