« previous next »
Pages: [1]   Go Down

Author Topic: rear brake of death  (Read 1151 times)

0 Members and 1 Guest are viewing this topic.

BigRed

  • Guest
rear brake of death
« on: February 17, 2009, 03:35:29 PM »
1972 cb750

So, I was driving home from work, road is wet from an earlier rain. As I'm slowing down i'm pressing my front and rear brake. I'm barely pressing the rear brake then i hear a click a click and my rear brake locks up for a second then goes back to norman again, almost layed the bike down.

anyone have any idea what the issue is?
« Last Edit: February 17, 2009, 03:55:16 PM by BigRed »
Logged

KingCustomCycles.com

  • Guest
Re: rear brake of death
« Reply #1 on: February 17, 2009, 03:45:33 PM »
Who's Norman?
Logged

Offline Duke McDukiedook

  • Space Force 6 Star General
  • Really Old Timer ...
  • *******
  • Posts: 12,690
  • Wish? Did somebody say wish?
Re: rear brake of death
« Reply #2 on: February 17, 2009, 03:47:00 PM »
Drum brake I assume, year, type of bike?
Could be your drum mechanism is a bit sticky (Or return springs might be worn?). Might want to check the wear mark and tear into the drum to see if it needs a cleaning.
Logged
"Well, Mr. Carpetbagger. We got somethin' in this territory called the Missouri boat ride."   Josey Wales

"It's Baltimore, gentlemen. The gods will not save you." Ervin Burrell

CB750 K3 crat | (2) 1986 VFR750F

Offline OldSchool_IsCool

  • Really feeling like an
  • Old Timer
  • ******
  • Posts: 4,350
  • WARNING: Objects in mirror appear to be LOSING!
Re: rear brake of death
« Reply #3 on: February 17, 2009, 03:47:07 PM »
Is it the bike in your avatar (i.e drum brake not hydraulic disk)?  The cheeky answer is that the static friction of your brakes overcame the dynamic friction of your tire on the rain slicked road thus causing the tire to also dip into a state of static friction.

The clicks may be your brake pull rod stripping out of the adjuster nut, or the return spring stuck on something or the brake stay bar coming loose and slapping the frame as it rotates with the wheel.  Could be some debris or loose parts in the rear brake cover.

Check the brake rod, stay bar, spring and axle nuts.  Check that you have plenty of pad on the brake shoe and that the parts inside the rear brake are as they should be.

Glad you are OK!
Logged
Can I have a motorcycle when I get old enough?
If you take care of it.
What do you have to do?
Lot’s of things. You’ve been watching me.
Will you show me all of them?
Sure.
Is it hard?
Not if you have the right attitudes. It’s having the right attitudes that’s hard.

Offline Alan F.

  • We remember the Night Rider, and we know who you are.
  • Really Old Timer ...
  • *******
  • Posts: 7,343
Re: rear brake of death
« Reply #4 on: February 17, 2009, 04:08:42 PM »
Another possibility is that the ancient brake shoe's friction material has cracked and seperated from the shoe.... Scary.
Logged

Offline DaytonGuy

  • Enthusiast
  • **
  • Posts: 231
Re: rear brake of death
« Reply #5 on: February 17, 2009, 04:19:48 PM »
Quote
Who's Norman?

OK....nothing important to add, but that was funnier than poopoo.  I about fell out of my chair.

Very well done..... ;D
Logged

Offline Alan F.

  • We remember the Night Rider, and we know who you are.
  • Really Old Timer ...
  • *******
  • Posts: 7,343
Re: rear brake of death
« Reply #6 on: February 17, 2009, 04:22:30 PM »
+1
Logged

Offline mystic_1

  • Really Old Timer ...
  • *******
  • Posts: 6,071
  • 1970 CB750K
Re: rear brake of death
« Reply #7 on: February 17, 2009, 04:35:36 PM »
Personally I'd be pulling the wheel off and getting eyes on the brake components before riding agian, unless you find a problem with the actuator rod as suggested above.

mystic_1
Logged
"A ship in harbor is safe, but that is not what ships are built for."
- John Augustus Shedd

My build thread:  http://forums.sohc4.net/index.php?topic=68952.0

BigRed

  • Guest
Re: rear brake of death
« Reply #8 on: February 17, 2009, 04:55:30 PM »
Quote from: OldSchool_IsCool on February 17, 2009, 03:47:07 PM
Is it the bike in your avatar (i.e drum brake not hydraulic disk)?  The cheeky answer is that the static friction of your brakes overcame the dynamic friction of your tire on the rain slicked road thus causing the tire to also dip into a state of static friction.

The clicks may be your brake pull rod stripping out of the adjuster nut, or the return spring stuck on something or the brake stay bar coming loose and slapping the frame as it rotates with the wheel.  Could be some debris or loose parts in the rear brake cover.

Check the brake rod, stay bar, spring and axle nuts.  Check that you have plenty of pad on the brake shoe and that the parts inside the rear brake are as they should be.

Glad you are OK!
went down and checked it out, turns out my brake rod, stay bar, and tighters for the the drum where all loose.
Logged

Offline UnCrash

  • Pass
  • Master
  • *****
  • Posts: 1,705
    • My Blog
Re: rear brake of death
« Reply #9 on: February 17, 2009, 06:03:41 PM »
Quote
went down and checked it out, turns out my brake rod, stay bar, and tighters for the the drum where all loose.
  Yikes!

Every week I give my bike a good walkaround testing connections, nuts, ect.  Last summer I hadn't done it for 3 weeks, gave the bike a good walkaround and found 3 nuts missing from my front rotor!

Glad you didn't loose a part on the road -- tightening stuff up to spec has to be one of the easiest fixes on our bikes.
Logged
You can't make too much popcorn, but you can definately eat too much popcorn.

Offline BobbyR

  • Really Old Timer ...
  • *******
  • Posts: 12,367
  • Proud Owner of the Babe Thread & Dirty Old Man
Re: rear brake of death
« Reply #10 on: February 17, 2009, 06:13:00 PM »
Loctite
Logged
Dedicated to Sgt. Howard Bruckner 1950 - 1969. KIA LONG KHANH.

But we were boys, and boys will be boys, and so they will. To us, everything was dangerous, but what of that? Had we not been made to live forever?

Offline 754

  • Really Old Timer ...
  • *******
  • Posts: 29,058
Re: rear brake of death
« Reply #11 on: February 17, 2009, 06:22:00 PM »
I am a bit lazy but the no maintainance plan can kill ya.

Dont hurt to look at the brake once in a while, see if the shoes are still in there.. and to check bolts on your bike.

 not even gonna ask how long it was like that..
Logged
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Steve F

  • I have "some-timer's disease" because I'm an
  • Old Timer
  • ******
  • Posts: 2,929
  • "To Ride Is The Reason, The Destination The Excuse
Re: rear brake of death
« Reply #12 on: February 17, 2009, 06:27:59 PM »
Quote from: KingCustomCycles.com on February 17, 2009, 03:45:33 PM
Who's Norman?
The "cow" in City Slickers (not really a cow).
Logged
Pages: [1]   Go Up
« previous next »