I'm sorry Barn, but I can't agree. Look at it. If the master and the
slave were the same size, the slave would move the same amount as the
master for a given displacement and the force would be 1 to 1 If the
slave was twice the diameter of the master, the force at the slave would
be doubled but the travel would be halved.
CR
Barney Gaylord wrote:
> At 03:22 PM 2/25/2009 -0600, Charles & Peggy Robinson wrote:
>> I'm aware that if you increase the size of the slave cylinder you get
>> more force multiplication but less movement for a given displacement
>> of the master piston. That's all I said.
>> ....
>
> You never get less movement. You get slower movement, more fluid flow,
> and longer pedal travel until the shoes move the same distance to come
> into contact with the drum. When it stops moving you get higher force
> from the hydraulic pressure on the larger piston. Ergo, more braking
> force on the rear wheels and possible rear wheel lockup (after longer
> pedal travel).
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