Like your Fixie with a brake?

nicklouse

spasypaddy

that is a very interesting concept... is it safe?

lost_in_thought

Ummmmmm.... is that really a good idea? Fizzycysts?

:shock:

Aidy

lost_in_thought wrote:

Ummmmmm.... is that really a good idea? Fizzycysts?

:shock:

Well, it'll work...

You'd be overworking the chain though, no?
In any case, it's not something I'd trust - if the chain snapped, you'd have zero kind of braking. Except perhaps your face.

skyd0g

Interesting, but it will only apply the brake to the rear wheel - nice for long skids.

amnezia

lost_in_thought wrote:

Ummmmmm.... is that really a good idea? Fizzycysts?

:shock:

right up until the brake pads get lubricated with all the oil from the chain.. or your chain snaps.

graeme_s-2

Pretty sure that would still make the bike illegal in the UK. You need two independent brakes, so a fixie with a front brake is fine. A fixie with that contraption is reliant on the chain not braking, otherwise you're stopping with the soles of your shoes.

rolf_f

Hmmmm, advantage = power of a disc brake without the weight issues. And on a fixed it sort of duplicates the pedal braking action.

However, on a fixed, does the weight saving mean anything useful? Also, as someone who covers a lot of miles on a disc braked bike, I can say that whilst the effectiveness is excellent, the sqeaks and grinding noises you get from discs when anything isn't absolutely right is a bit annoying. I'd have thought there'd be a lot more crap waiting to get into the calipers from the chainwheel teeth than you get on the wheels.

Jamey

amnezia wrote:

right up until the brake pads get lubricated with all the oil from the chain.. or your chain snaps.

+1

il_principe

Aidy wrote:

lost_in_thought wrote:

Ummmmmm.... is that really a good idea? Fizzycysts?

:shock:

Well, it'll work...

You'd be overworking the chain though, no?
In any case, it's not something I'd trust - if the chain snapped, you'd have zero kind of braking. Except perhaps your face.

Ah, the Hipster brake of choice.

rjsterry

Surely when braking, as the gearing will be working in reverse, the brake will be proportionally less effective than the same caliper fitted to a conventional wheel based disc. <waits for physics correction from Greg66>

A pretty high chance of either it being so weedy that you'll have to put your foot down, or, if your weight goes forward, leaving half your tyre on the tarmac.

+1 on the chain oil getting under the caliper as well.

supersonic

And crank flex - these will have to be solid cranks and chainring! Just half a mm flex and you'll rub the brake every pedal stroke.

Aidy

rjsterry wrote:

Surely when braking, as the gearing will be working in reverse, the brake will be proportionally less effective than the same caliper fitted to a conventional wheel based disc. <waits for physics correction from Greg66>

You're quite right, I missed that.

(Bigger discs = greater stopping power; the gear ratios effectively work to step down the size of the disc).

juankerr

Contaminated pads ahoy!

supersonic

It runs without lube, dry chain.

jimmypippa

But Why?

Greg T

supersonic wrote:

It runs without lube, dry chain.

Frictionless surface?

Cough cough.

Monkeypump

Hmm....

Thickness of chainring much greater than traditional disc.

Teeth on chainring means braking surface is far deeper into the diameter of the chainring than 'real' disc.

Entertaining concept, but suspect photoshoppery or bored-engineer mock-up.

lost_in_thought

supersonic wrote:

It runs without lube, dry chain.

Remarkable. Last long, do they? :P

rjsterry

Bet it would sound like a cement mixer full of nuts and bolts as well.

supersonic

Running chains dry is not a new thing - I know of a few (and of some 'experts'!) who prefer it!

lost_in_thought

supersonic wrote:

Running chains dry is not a new thing - I know of a few (and of some 'experts'!) who prefer it!

With dry lube though, surely, rather than no lube...?

supersonic

No, none! They say it stops contaminants been driven into the chain. It will work - though I have never tried it so can't comment on how long lol.

Skippy2309

silly if you ask me, if the wheel locks up your legs are still gonna be trying to move.... or if you pull the brake hard then let go you will shoot up in the air...

I bet someone tries this with a SS bike :twisted:

Saw too many stupid hipsters today riding without brakes :roll:

TwoWheelDrift

thats just silly, as numerous people have said, your chain snapping = death

biondino

Presumably a dry chain can never be used in any kind of damp or even humid conditions? But then in dry dry conditions you'd have dust issues. Can't see it working tbh.

I think this is a nifty idea but a flawed reality. Like so many things.