Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Coaster brake problem, it is not braking properly.

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

Coaster brake problem, it is not braking properly.

Old 06-02-17, 07:52 AM
  #1  
Good Morning
Junior Member
Thread Starter
 
Join Date: Nov 2016
Posts: 11
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Coaster brake problem, it is not braking properly.

I disassembled my coaster brake because one of the ball bearings was busted. I took the whole hub apart and cleaned and regreased and put it back together with new ball bearings and grease. Now the problem is: when I backpedal to brake the braking power is really low, in most cases it would not be safe (but I still have a front brake), only when I press really hard to backpedal then the brake works properly, but at that level the wheel locks and I can do a skid stop if I wanted to. The coaster brake has mostly lost the ability to modulate. For safety sake, I do need the rear brake to be restored the way it was, which allows for feather braking and modulation. How can this be fixed?

I included pictures of the take apart and cleaning, I don't think the brake pads are worn, what could it be? The spring? Clutch?:




Last edited by Good Morning; 06-02-17 at 06:01 PM.
Good Morning is offline  
Old 06-02-17, 08:25 AM
  #2  
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 41,398

Bikes: 8

Mentioned: 188 Post(s)
Tagged: 0 Thread(s)
Quoted: 6839 Post(s)
Likes: 0
Liked 218 Times in 181 Posts
so why nor go find the new bearing retainer/balls , then put it back together?

snap ring of spring wire should hold the brake segments together

Ask your LBS, , it may be known to them I don't see an obvious brand mentioned.
fietsbob is offline  
Old 06-02-17, 08:54 AM
  #3  
Good Morning
Junior Member
Thread Starter
 
Join Date: Nov 2016
Posts: 11
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I did get new ball bearings.

i am wondering what can do i internally in the hub to make everything work the way it was before.

brand is one of the generic ones
Good Morning is offline  
Old 06-02-17, 09:13 AM
  #4  
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 41,398

Bikes: 8

Mentioned: 188 Post(s)
Tagged: 0 Thread(s)
Quoted: 6839 Post(s)
Likes: 0
Liked 218 Times in 181 Posts
I cannot help you over the internet. look for videos..

put it back together in the reverse order that you took it apart.

if you cannot do that , get a new wheel from the bike shop, it will have another generic hub.



Sun Race Sturmey Archer makes a better than generic coaster brake hub,
they combine the brake with multi speed internal gears too.



...
fietsbob is offline  
Old 06-02-17, 09:19 AM
  #5  
Good Morning
Junior Member
Thread Starter
 
Join Date: Nov 2016
Posts: 11
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I appreciate your responses, then I hope someone will come along who knows about coaster brakes that can help me.

I did put it back together in the reverse order, but braking is bad enough that it can't be modulated.

I can't get a new wheel, for money reasons. I am sure this one can be fixed, just need to know what to fix. Hopeful that will happen.
Good Morning is offline  
Old 06-02-17, 10:00 AM
  #6  
SquidPuppet
Calamari Marionette Ph.D
 
SquidPuppet's Avatar
 
Join Date: Dec 2013
Location: Coeur d' Alene
Posts: 7,880

Bikes: 3 Chinese Gas Pipe Nerdcycles and 2 Chicago Electroforged Boat Anchors

Mentioned: 73 Post(s)
Tagged: 0 Thread(s)
Quoted: 2346 Post(s)
Liked 2 Times in 2 Posts
How much grease did you pack into the clutch/shoe/hub interface?

I've experienced this with over packed hubs. Seriously. Bearings get super packed, but I generally just apply a decent film to the outside of the clutch and both sides of the shoes. The cavity where the shoes reside should not be stuffed.
SquidPuppet is offline  
Old 06-02-17, 10:26 AM
  #7  
Good Morning
Junior Member
Thread Starter
 
Join Date: Nov 2016
Posts: 11
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I put on a decent amount of grease, not too much and not too little, i think. I originally cleaned everything out (with the exception of the clutch spring, since at the time i didn't know it can be removed) in paint thinner, so everything had to be regreased again and I tried to put on not too much but not too little either. I know it is hard to explain without a picture.

A question, Should I loosen the cone nut on the drive side so some grease can be leaked out during riding?
Good Morning is offline  
Old 06-02-17, 06:21 PM
  #8  
SquidPuppet
Calamari Marionette Ph.D
 
SquidPuppet's Avatar
 
Join Date: Dec 2013
Location: Coeur d' Alene
Posts: 7,880

Bikes: 3 Chinese Gas Pipe Nerdcycles and 2 Chicago Electroforged Boat Anchors

Mentioned: 73 Post(s)
Tagged: 0 Thread(s)
Quoted: 2346 Post(s)
Liked 2 Times in 2 Posts
Originally Posted by Good Morning View Post

A question, Should I loosen the cone nut on the drive side so some grease can be leaked out during riding?
And run the bike with an improperly adjusted bearing? NO!

Do it right. Open it up and make sure the clutch and shoes have just a film on them. If you Packed the hub you can experience braking issues and also excessive shoe drag during coasting and pedaling.
SquidPuppet is offline  
Old 06-03-17, 03:26 AM
  #9  
okane
Senior Member
 
okane's Avatar
 
Join Date: May 2009
Posts: 1,030
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 52 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Looks like Bendix single speed redband

Plenty of info available on line for this one. Follow the directions, check for broken parts, and you should be laying skid patches in no time.

I have done quite a few and they are in my opinion the easiest to rebuild and stop the best (for a coaster). The only problem I ever experienced was a cracked shoe that I replaced but the brake still worked properly with this broken part. I just routinely rebuild them because most have 30+ year old hardened grease and it takes less than an hour from breakdown to cleaning up my hands.

Check out the literally hundreds of parts diagram which will help in assembly. Some people will print out the parts diagram and keep it on the work bench which makes it easy to get everything in the proper order and orientation.

I use synthetic marine grease from the auto parts store because of its resistance to water, staying power, and its a lot cheaper than "bicycle grease" you get in a little tube for $8 or D$10, but as others have previously stated, don't overdose.
okane is offline  
Old 06-03-17, 01:17 PM
  #10  
Good Morning
Junior Member
Thread Starter
 
Join Date: Nov 2016
Posts: 11
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
At the end caps/cones of the coaster brake, there is always a small layer of grease (even after I wipe it away). Is that normal, or does that mean the too much grease, or the cones are too loose?
Good Morning is offline  
Old 06-04-17, 06:14 AM
  #11  
okane
Senior Member
 
okane's Avatar
 
Join Date: May 2009
Posts: 1,030
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 52 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
If you mean grease extrudes after you adjust the cone/lock nut, this is normal. Cone is pushing out extra grease. I always need to wipe away this "extra" grease from the outside of the hub because: 1 I load up the race pretty well to insure sufficient grease and 2. Grease attracts contaminants so I want the outside of the hub parts clean.
okane is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
roadie7
Charity Events
0
01-26-12 01:08 PM
MarylandDeRosa
Classic & Vintage
0
06-06-10 04:33 PM
LaBella
BMX
1
06-06-10 09:35 AM
calamarichris
Southern California
8
12-03-09 08:07 AM
barleyrocket
Triathlon
0
12-21-05 08:14 AM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.