Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Classic & Vintage This forum is to discuss the many aspects of classic and vintage bicycles, including musclebikes, lightweights, middleweights, hi-wheelers, bone-shakers, safety bikes and much more.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 02-09-09, 11:38 AM   #1
SlowRoller
Senior Member
Thread Starter
 
Join Date: Jul 2008
Location: San Francisco, CA
Bikes:
Posts: 334
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Coaster hub help (Mark IV, Schwinn Approved)

Does anyone know how to disassemble a Mark IV coaster hub? I've gone through the Sturmey-Archer and Bendix sites online and don't find a match to my hub. A lot of them appear to be approached from the drive-side, usually by removing a circlip. My hub doesn't have a circlip that I can find. Some other hubs I saw have a brake arm on the left-hand side that lifts off after removing locknuts, etc. The brake arm on my hub won't budge.

On my hub, there is a thick ring on the drive-side that has a single notch. I was thinking maybe a spanner of some sort may be needed to wrench it off.

But, if anyone has experience with this hub, I'd appreciate hearing from you!

Note: I cross-posted this in the mechanics forum.
SlowRoller is offline   Reply With Quote
Old 02-09-09, 12:04 PM   #2
kpug505
Senior Member
 
kpug505's Avatar
 
Join Date: Oct 2006
Location: Puyallup Washington
Bikes: Motobecane Mirage fixed gear, Nashbar Alpha Road 5000, Bianchi Grizzly, Coppi Fiorelli, , Schwinn Trike, , GT All Terra, Old Peugeot, Nishiki 3 speed, Bugatti, Cannondale Black Lightning, Dura All, Bianchi Touring, Bridgestone T700 & more
Posts: 1,847
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Have you looked at what Sheldon had to say on the matter?
http://www.sheldonbrown.com/coaster-brakes.html

I've got some old manuals around here somewhere. If I find some instruction I'll snap pics and post them for you. Is your hub made by Bendix for Schwinn? Got a pic of it?
__________________
Quote:
Originally Posted by CardiacKid View Post
We don't cotton to people who cut things off their bikes in these here parts.

Check out my bike blog!
kpug505 is offline   Reply With Quote
Old 02-09-09, 01:49 PM   #3
nlerner
Senior Member
 
Join Date: Dec 2005
Bikes:
Posts: 9,995
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 93 Post(s)
I can tell you that the ring with a notch is, indeed, a lock ring, so put the opposite end of the hub in a vise and loosen that ring with a punch and hammer (or a very small lock-ring tool of you have one). I have seen coaster-brake hubs in which the sprocket was on a threaded driver, but you should be able to get the bits on one side loose in order to take apart the other side.

Neal
nlerner is offline   Reply With Quote
Old 02-09-09, 07:50 PM   #4
SlowRoller
Senior Member
Thread Starter
 
Join Date: Jul 2008
Location: San Francisco, CA
Bikes:
Posts: 334
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Thanks, kpug and Neal! From Sheldon's site, I believe the hub is a Sturmey-Archer TCW iteration, but the drive-side end seems different from the diagrams I've come across. I'm going to try Neal's advice and see if I can get the lock ring off. Btw, any intuition whether or not it would be reverse threaded? I read on Sheldon's site that on some of the old English coaster-type hubs that had lockrings next to the sprocket, the lock ring would be reverse threaded so that if the sprocket were to start working loose, it would act to tighten the lock ring.

Thanks for all the help!
SlowRoller is offline   Reply With Quote
Old 02-09-09, 07:58 PM   #5
kpug505
Senior Member
 
kpug505's Avatar
 
Join Date: Oct 2006
Location: Puyallup Washington
Bikes: Motobecane Mirage fixed gear, Nashbar Alpha Road 5000, Bianchi Grizzly, Coppi Fiorelli, , Schwinn Trike, , GT All Terra, Old Peugeot, Nishiki 3 speed, Bugatti, Cannondale Black Lightning, Dura All, Bianchi Touring, Bridgestone T700 & more
Posts: 1,847
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
TCW eh? Try Hadlands site then.....This link should help you out.
__________________
Quote:
Originally Posted by CardiacKid View Post
We don't cotton to people who cut things off their bikes in these here parts.

Check out my bike blog!
kpug505 is offline   Reply With Quote
Old 02-09-09, 08:01 PM   #6
kpug505
Senior Member
 
kpug505's Avatar
 
Join Date: Oct 2006
Location: Puyallup Washington
Bikes: Motobecane Mirage fixed gear, Nashbar Alpha Road 5000, Bianchi Grizzly, Coppi Fiorelli, , Schwinn Trike, , GT All Terra, Old Peugeot, Nishiki 3 speed, Bugatti, Cannondale Black Lightning, Dura All, Bianchi Touring, Bridgestone T700 & more
Posts: 1,847
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Oh ya.......I hate to say it but the TCW has a reputation for sucking. If it is a TCW make sure you've got hand brakes as insurance!
__________________
Quote:
Originally Posted by CardiacKid View Post
We don't cotton to people who cut things off their bikes in these here parts.

Check out my bike blog!
kpug505 is offline   Reply With Quote
Old 02-09-09, 09:03 PM   #7
nlerner
Senior Member
 
Join Date: Dec 2005
Bikes:
Posts: 9,995
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 93 Post(s)
Quote:
Originally Posted by SlowRoller View Post
Btw, any intuition whether or not it would be reverse threaded?
Yeah, I was wondering that, too, as you described the set up. Perhaps see if you see any tell-tale wear on that lock-notches to see what direction they've been pounded in the past. Otherwise, if it's on the drive side, I'd assume it's likely left-hand threaded.

Neal
nlerner is offline   Reply With Quote
Old 02-10-09, 01:40 AM   #8
SlowRoller
Senior Member
Thread Starter
 
Join Date: Jul 2008
Location: San Francisco, CA
Bikes:
Posts: 334
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Thanks you guys. As for the basic flaw with the TCW hub, I'm planning to install brakes, as I hope to move to a single-speed wheel once I find a donor. My work with the coaster hub is just to see if cleaning and greasing will bring it back to life for a while, before I find my donor rear wheel.

As for the hub, the lock ring was the key, and it was reverse-threaded! I removed it tonight and have the hub disassembled on my bench. I wish it was already the weekend, as I want to spend some time cleaning it, then working on some spokes, before treating the hub and putting it all back together to see how it spins. Thanks again!
SlowRoller is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -6. The time now is 04:27 PM.