hand lever coaster brake?

[Duchess]

With a big enough mechanical advantage, hand strength isn't an issue. Just have to get it right.

That ND WD was actuated with a hand lever via cable. How effective they were, I have no idea, but I do suppose they didn't exactly light the industry on fire and I doubt it was an ironclad patent (I shouldn't write that as someone will start a Kickstarter scam with this as a revolutionary "new" weather resistant front brake).

 

[deorman]

 

[Fv2]

Right

 

[pholTmonx]

I like this place...

 

[deorman]

If you had a milling machine you could probably make one from scratch with a hollow axle and either the internal part of the brake anchor or the cone clutch sliding on splines and pushed with a bell-crank and rod like gear changes in an internal planetary geared hub. It would probably have to have a bigger diameter axle and be larger than a regular hub for the pieces to be robust enough to survive.

 

[LukeTheJoker]

If you had a milling machine you could probably make one from scratch with a hollow axle and either the internal part of the brake anchor or the cone clutch sliding on splines and pushed with a bell-crank and rod like gear changes in an internal planetary geared hub. It would probably have to have a bigger diameter axle and be larger than a regular hub for the pieces to be robust enough to survive.

If you had those tools wouldn't you just make the mother of all drum brakes using dirtbike brake shoes?
If I had a mill or a bigger lathe that would be something I would definitely look at building.

Luke.

 

[gowjobs]

If you had those tools wouldn't you just make the mother of all drum brakes using dirtbike brake shoes?
If I had a mill or a bigger lathe that would be something I would definitely look at building.

Luke.

I'd kind of agree with you there. At that point, it would make more sense to find a rear hub from some salvage moped, thread on a new freewheel, and trick out the wedge/lever mechanism. Maybe retrofit to roller-actuation? I mean a coaster brake is just a tiny drum brake when you get down to the guts of it. If you want a lever-actuated coaster, all you're doing is making an undersized drum brake.

Since I saw drag brakes mentioned, there are drag drum/band brakes available to thread on flip-flop hubs, meant for use on tandems to prevent them from gaining too much speed/momentum on long downhills. Usually, they're applied gradually by turning a knob, in my experience.

 

[honestherman]

I picture a long lever about 24-30 inches long like Dudley Doright stopping the Buzz Saw

 

[Fv2]

I'd kind of agree with you there. At that point, it would make more sense to find a rear hub from some salvage moped, thread on a new freewheel, and trick out the wedge/lever mechanism. Maybe retrofit to roller-actuation? I mean a coaster brake is just a tiny drum brake when you get down to the guts of it. If you want a lever-actuated coaster, all you're doing is making an undersized drum brake.

Since I saw drag brakes mentioned, there are drag drum/band brakes available to thread on flip-flop hubs, meant for use on tandems to prevent them from gaining too much speed/momentum on long downhills. Usually, they're applied gradually by turning a knob, in my experience.

I didn't think about these ideas, I have moped hubs and atleast one flip flop hub.
I'll look into the flip flop idea, a moped hub might work well; but would be to big for now.

 

[pholTmonx]

Guys and gals we are getting derailed here... falstaff wants to use a coaster brake arm as an acctuator for the coaster...
Get your stinky logic out of here...

Resume insanity please...
Go.

 

[MazdaFlyer]

I remember seeing a coaster brake hub installed on the front wheel in a build thread here. I think it was one of the guys from New Zealand or Australia. Think it was one of the winter build offs or muscle bike. It involved using chain connected to a hand lever.
Might have been a white bike?


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[Fv2]

I remember seeing a coaster brake hub installed on the front wheel in a build thread here. I think it was one on the guys from New Zealand or Australia. Think it was one of the winter build offs or muscle bike. It involved using chain connected to a hand lever.


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I know the bike you're talking about, but what I want to do is make a drag brake for the rear wheel.
I could use a caliper or disk brake, and mount the lever to the frame. But I was hoping for something else.

I obviously can't build it the way I was thinking, it was a stupid question. But I have the answer now.

 

[MazdaFlyer]

Don't mean to belabor this but here's bike I had in mind. I had saved the image but I don't remember who the builder was.

I thought it was a cool idea.


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[Duchess]

I agree. I wonder where they got a 100mm OLD coaster hub.

 

[pholTmonx]

This ones not the one i was talking about this looks fun and effective..
The other looked like rider ejection mechanism.

 

[Fv2]

Don't mean to belabor this but here's bike I had in mind. I had saved the image but I don't remember who the builder was.

I thought it was a cool idea.


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But..... How to do something similar using the rear wheel?

 

[MazdaFlyer]

But..... How to do something similar using the rear wheel?

Good question...


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[Bicycle808]

Why isn't a rear-mounted, foot-operated coaster going to suffice as a drag brake? At some point, the time and expense of trying to fabricate this l'il impossibility is going to eclipse the purchase price of a dozen drum- or roller-brake rear hubs....

 

[Bicycle808]

Don't mean to belabor this but here's bike I had in mind. I had saved the image but I don't remember who the builder was.

I thought it was a cool idea.

Rad set-up; bike looks awesome

 

[Fv2]

Why isn't a rear-mounted, foot-operated coaster going to suffice as a drag brake? At some point, the time and expense of trying to fabricate this l'il impossibility is going to eclipse the purchase price of a dozen drum- or roller-brake rear hubs....

It's really difficult to explain it. I don't plan on even attempting this until I know in my head how to do it, or atleast how I think I should do it. Maybe it'll never happen.
But impossibility is why most things are invented.