Close

User Tag List

Results 1 to 10 of 10
  1. #1

    Join Date
    Oct 2018
    Location
    SoCal, SF
    Posts
    77
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    What makes a good brake drum?

    Ha! It's a trick question!

    Because part of the answer is here:

    http://www.plazafleetparts.com/uploa...brake_drum.pdf

    There's some good info in there. For example, read the last sentence above the last header at the end of the document:

    "Parking brakes should not be set while the drums are hot. Allow them to cool, otherwise, drum cracking and failure can result."

    Feel free to elaborate!

  2. #2
    Approved Vendor ZombieSatty's Avatar
    Join Date
    Feb 2007
    Location
    Omaha, NE
    Posts
    6,477
    Post Thanks / Like
    Blog Entries
    2
    Mentioned
    13 Post(s)
    Tagged
    0 Thread(s)
    Eh, that's not necessarily true anymore imo.
    It's not my fault, blame the radiation.

  3. #3

    Join Date
    Oct 2018
    Location
    SoCal, SF
    Posts
    77
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Why not?


    Sent from my iPhone using Tapatalk

  4. #4
    Resident Electromotive Expert importsdontlikeme's Avatar
    Join Date
    Feb 2010
    Location
    Westminster, Maryland
    Posts
    3,223
    Post Thanks / Like
    Blog Entries
    3
    Mentioned
    29 Post(s)
    Tagged
    0 Thread(s)
    I've never owned a rear drum S car but I've never seen one crack otherwise


    Sent from my iPhone using Tapatalk Pro

    Interested in a solid engine management system? Ask me about Electromotive engine management.

  5. #5
    Jon2001sc2's Avatar
    Join Date
    Aug 2004
    Location
    Daytona Beach
    Posts
    1,684
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Applying the parking brake on hot rotors is far more likely to do damage, as is holding the brakes after a hard stop. I've seen quite a few rotors warp, never had a drum crack. Also the Saturn drums are well balanced for the cars, there is a SCCA roadracing national championship won using them, only reason to replace is that they are a huge pain to adjust and maintain.
    Jonathan
    Just a guy with a thing for tubeframes and motorswaps...
    Saturns, I have them, too many of them actually

  6. Likes ZombieSatty liked this post
  7. #6
    Approved Vendor ZombieSatty's Avatar
    Join Date
    Feb 2007
    Location
    Omaha, NE
    Posts
    6,477
    Post Thanks / Like
    Blog Entries
    2
    Mentioned
    13 Post(s)
    Tagged
    0 Thread(s)
    I have been taught brake durability is all about heat. Drums actually stop quite well, often with more mechanical advantage over a disc setup. They generally just can't keep doing it, since they retain heat.

    It's interesting the race cars used drums, figured they would have gone for a disc car. Though, would that have made them use ABS? I'm not familiar with the rules of the series.
    It's not my fault, blame the radiation.

  8. #7

    Join Date
    Oct 2018
    Location
    SoCal, SF
    Posts
    77
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Just as a warning to anyone reading this, Autozone Duralast drums are (going by the picture on the website) weight balanced, which according to the article I posted at the top, is a bad thing.

  9. #8
    Jon2001sc2's Avatar
    Join Date
    Aug 2004
    Location
    Daytona Beach
    Posts
    1,684
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by TwoFistedJustice View Post
    Just as a warning to anyone reading this, Autozone Duralast drums are (going by the picture on the website) weight balanced, which according to the article I posted at the top, is a bad thing.
    As I recall the factory drums used weights to balance them, it is perfectly fine for an econobox, this isn't the 24hrs of LeMans here.
    Jonathan
    Just a guy with a thing for tubeframes and motorswaps...
    Saturns, I have them, too many of them actually

  10. #9
    Jon2001sc2's Avatar
    Join Date
    Aug 2004
    Location
    Daytona Beach
    Posts
    1,684
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by ZombieSatty View Post
    I have been taught brake durability is all about heat. Drums actually stop quite well, often with more mechanical advantage over a disc setup. They generally just can't keep doing it, since they retain heat.

    It's interesting the race cars used drums, figured they would have gone for a disc car. Though, would that have made them use ABS? I'm not familiar with the rules of the series.
    This was back in the Showroom Stock C days before everyone went to ITA where the rule book opened up quite a bit. The 97sc2 did not have the ABS option, I can't remember if the rules opened up near the end of eligibility for SSC or if we just didn't care anymore since the rest of the Saturns had or were moving to ITA and wouldn't be around to know it shouldn't have it to protest or if it was once we went to ITA that the rear disk conversion took place. Anyway it was back when Londo was driving OB's car before he took over driving himself, must be 18 years ago or so now that I'm thinking when that took place.
    Jonathan
    Just a guy with a thing for tubeframes and motorswaps...
    Saturns, I have them, too many of them actually

  11. Likes ZombieSatty liked this post
  12. #10
    6S Moderator S.Bretz's Avatar
    Join Date
    Apr 2004
    Location
    Lutz, Fl
    Posts
    15,345
    Post Thanks / Like
    Mentioned
    27 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Jon2001sc2 View Post
    This was back in the Showroom Stock C days before everyone went to ITA where the rule book opened up quite a bit. The 97sc2 did not have the ABS option, I can't remember if the rules opened up near the end of eligibility for SSC or if we just didn't care anymore since the rest of the Saturns had or were moving to ITA and wouldn't be around to know it shouldn't have it to protest or if it was once we went to ITA that the rear disk conversion took place. Anyway it was back when Londo was driving OB's car before he took over driving himself, must be 18 years ago or so now that I'm thinking when that took place.

    It starts to get hard to think back that far about those little details.
    -6S Resident Mechanical Forensics member #001.
    1995 SC2 Turbo 3.6L DOHC, 6sp manual, Ford 8.8 rearend running on MS3x.
    1998 F-250 5.4L triton...stock.

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •