Basic stuff, question 1 - coaster brake

[nhoj]

What does a coaster brake actually do? BITD I thought it let you do a roll-back without peddling backwards, is that right, is that all it does?

P.S.  Never really thought about it much in the last twenty odd years untill some new skyways arrived from ebay today with a coaster fitted

[lazychubs]

its ya rear brake

[nhoj]

In leymans terms - a pedal backwards brake?

[TwoBobRob]

Yeah, you do roll back without pedalling as long as you 'set' the coaster first.  To do this, you crank backwards a tiny bit. Dont do this and you'll pedal backwards as normal.

Crank backwards a little harder and you'll apply the brake. This is true whether you're going forwards or backwards.

A coaster hub isn't a ratchet like a freewheel is, the insides are completely different.  

[Rombloke]

well explained i feel mr steele.

1 merit mark for you dear boy

Dave

[TwoBobRob]

Ayethankyou   

[aerostylie]

And whats the thing with the seat clamp acting as/with a coaster, never quite understood that/how it works

Cheers

Paul

[TwoBobRob]

The coaster has to be anchored to a fixed point if you want the brake to work. If the frame didn't have a coaster bracket then the done thing was to use a seatclamp to anchor the coaster arm to the frame   

[aerostylie]

The coaster has to be anchored to a fixed point if you want the brake to work. If the frame didn't have a coaster bracket then the done thing was to use a seatclamp to anchor the coaster arm to the frame   

Arrrrr I see, what a cool idea, any idea who came up with that?

Also thanx Rob for the answer, you da man