Coaster Hub Brake Arm

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01-19-10 | 08:52 PM

jell0garden

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Coaster Hub Brake Arm

I am using a rear coaster brake hub on a singlespeed I recently restored and I was wondering what exactly is the function of the brake arm?

Like, I can't understand how this thing could actually do anything, but according to Park it is absolutely necessary that it be bolted down.

Could I just leave it off? Or just not bolt it down? Or is that a big no-no when it comes to coaster brakes?

01-19-10 | 09:04 PM

garage sale GT

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When the brake stops the wheel from turning, it's what transmits the torque to the frame.

If you left it off, all the force of stopping a wheel would go into the frame through the hub. It would probably not have enough friction and would twist until you loosened the right hand nut and the axle broke.

Last edited by garage sale GT; 01-20-10 at 08:21 AM.

01-19-10 | 09:42 PM

ianjk

Joined: Nov 2006

Posts: 3,391

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From: duluth

Bikes: '07 Pista, '09 Fantom Cross Uno, '8? Miyata, '67 Stingray, '0? Zoo mod trials, Tallbike, Chopper, '73 Schwinn Collegiate, '67 Triumph Chopper, '69 CB350, '58 BSA Spitfire, '73 CB450

https://www.sheldonbrown.com/coaster-....html#reaction

Kinda important...

01-19-10 | 10:25 PM

lz4005

coasterbrakelockup

Joined: Nov 2004

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From: parts unknown

Bikes: surly steamroller w/coaster brake, electra single speed cruiser, specialized rockhopper commuter, no-name single speed folder, 700c ultimate wheel, 24" unicycle, specialized bmx lsd, single seat single speed huffy tandem, pink upsidedown parade bike

Quote:

Originally Posted by jell0garden

Like, I can't understand how this thing could actually do anything,

Walking may be more suited to your abilities than bike riding.