Accessories Bicycles Parts Specials Tools

Search sheldonbrown.com and sheldonbrown.org

Morrow Coaster Brakes
Sheldon Brown photo
by Sheldon "Feet" Brown
Spoke Divider

This page is just about the specifics of the Morrow coaster brakes

Refer also to the main Coaster Brake Service Page

Morrow coaster brake service manual

Brochure showing operation of Morrow coaster brake

Parts list for Morrow models B and V

Please note, we do not possess ANY Morrow parts for sale, please don't ask!

Morrow was for many years one of the top brands of coaster brake. The "slotted sprocket" was a Morrow specialty, making it possible to replace a broken spoke without needing to remove the sprocket.

Morrow models use a split sleeve type brake shoe.

When the brake is applied, the thread in the Driving Screw (112/307) presses the Nut and Sleeve Expander (111) against the Brake Sleeve (112) expanding the brake sleeve so that it presses against the inside of the hub shell. The Sleeve Expander With Teeth (113) expands the left end of the Brake Sleeve (112), and its teeth engage the matching teeth in the Cone Arm Side (114) to prevent the shoe from rotating with the hub.

When you pedal forward, the thread in the Driving Screw (112/307) pulls the Nut and Sleeve Expander (111) against the Brake Sleeve (112) against the Clutch Ring (110) which expands and grips the inside of the hub shell.

Here are some images from the 1938 Island Cycle catalogue.
Morrow Coaster Brake Hubs

Spoke divider

Thanks to BikeMike for the reproduced Island Cycle Catalogue

Spoke divider

Spoke Divider

Articles by Sheldon Brown and others
Harris
Home
Beginners Brakes Commuting
Lights
Cycle-
Computers
Do-It-
Yourself
Essays
Family
Cycling
Fixed Gear
Singlespeed
Frames Gears &
Drivetrain
Bicycle
Humor
Bicycle
Glossary
Bicycle
Links
Old
Bikes
Repair
Tips
Tandems Touring What's
New
Wheels Sheldon
Brown

Accessories Bicycles Parts Specials Tools

Copyright © 2007 Sheldon Brown

Harris Cyclery Home Page

If you would like to make a link or bookmark to this page, the URL is:
http://sheldonbrown.com/coaster-brakes/morrow.html

Last Updated: by John Allen