Rear brake kit

[A1ex]

If original size, I think someone needs to explain to me what the point is?

The further away the point of force (caliper squeezing) is applied from the centre of rotation (the hub) the greater the net stopping force.

Practical way to show it is to spin a CD and stop it twice. Once with your finger on the outside edge and once with your finger very close to the inside egde and see which takes the most effort

[mercutio]

So if it uses prelude calipers, does it take bigger pads to go with the bigger discs, or original size pads?

If original size, I think someone needs to explain to me what the point is?

leverage

[A1ex]

^^^^ Love it!

I give it some science, Merc; 1 word

[Donald]

Devolution.

[mercutio]

isnt that exactly what you said

[A1ex]

true. I guess we have different definitions of the word 'explain'

[mercutio]

everyone understands levers

[Donald]

Not sure how it's related to leverage though. If the disc was 'levered' as such you'd end up with warped discs or the disc would just deform over time and this leverage would gradually become less effective?

I would've thought the amount of theoretically 'untouched' disc surface area would have more to do with it, i.e. better heat dispersion as more 'fresh' disc is available after braking from the outside of the disc, as the inside will heat up too quickly and be inefficient.

[Donald]

Yeah I'm going with Alex's explanation, screw you and your leverage merc

[mercutio]

if your trying to remove a stubborn nut you go with a longer bar makes it easier to undo the same principle applies to moving a caliper further out with a bigger diameter disc there! long enough for you