Shi**no roller brakes - scratching my head

[mickle]

They have before now, it wasn't internal to the hub body like a drum and it lived in a steelite plastic shell one side of the hub.

I'll have to look that up, I've never seen such a thing.

 

[Zoiders]

Drum/Roller, Shimano use one word Sturmey another, you just can't get at the pads on the Shimano unit by the looks of it. Why they felt the need to separate the assembly's and add the splines I am not sure, maybe they considered the gubbins of the drum itself and the pads to be too complicated for the great unwashed and went with a disposable unit with the splines.

http://www.sturmey-a...s/pic-136.1.jpg

http://techdocs.shim...69830613270.pdf

 

[mickle]

http://www.sturmey-a...s/pic-136.1.jpg

That's just a regular drum brake, of the type fitted to my MkIII Cortina and a million other vehicles, I'd be interested to see Sturmey's version of a roller brake because, as I say, I've never seen such a thing. A roller brake is very different to a drum brake inasmuch as the drum is (in bicycle hubs at least) integral to the hub body/ shell whereas the roller brake neatly splines onto the side.

I quite like the M brake, such a slender and inconspicuous thing with none of the downsides of a rim brake (weather/ rim wear) - if only mine actually worked.

 

[Zoiders]

Splines or not - it's still a drum brake.

 

[Angelfishsolo]

Pulls up a chair and get a bucket of popcorn

 

[mickle]

Splines or not - it's still a drum brake.

Where are you going with this? Sturmey made a 'roller' brake? No they didn't. Their brakes are all - unless you can demonstrate otherwise - traditional drum brakes of the kind recognisable by anyone who has worked on a motorised vehicle from the Model T onwards. That is, a shoe or pair of shoes which act against a brake track - the drum which resides within the hub shell.

A roller brake on the other hand is very specifically a Shimano product which attaches to the outsside of a Shimano or other compatible hub using a proprietary splined interface. It's called a 'roller' because it uses a set of cyclindrical rollers to press the shoes against the brake track. Drum brakes use cams.

One lives inside the hub and uses cams to actuate the shoes. One lives outside the hub and uses rollers.

 

[mickle]

They have before now, it wasn't internal to the hub body like a drum and it lived in a steelite plastic shell one side of the hub.

Show me.

 

[Zoiders]

Show me.

Oh dear you are in a tiz, terribly sorry for using the term interchangeably and upsetting you.

Drum/Roller, both are drum brakes, shimano are getting around patent issues, hence the girt bit spines they added, roller cam or not they both activate pads inside a drum.

That's about it.

 

[Angelfishsolo]

Oh dear you are in a tiz, terribly sorry for using the term interchangeably and upsetting you.

Drum/Roller, both are drum brakes, shimano are getting around patent issues, hence the girt bit spines they added, roller cam or not they both activate pads inside a drum.

That's about it.

That's like saying all rim brakes are the same be they calliper, cantilever, rods et al.

 

[mickle]

Nope. You said Sturmey Archer made a roller brake, you even suggested that the mechanism was bolted to the outside of the hub.

And we were getting on so well.

 

[Andy_R]

 

[mickle]

I know! What are we like?!?

 

[Angelfishsolo]

I know! What are we like?!?

 

[Andy_R]

I know! What are we like?!?

I just imagined you sounding like David Walliams saying that.......

 

[mickle]

Fitted a new cable - it's now ever so slightly better than total shite.