MOTORCYCLE BRAKE CALCULATION!

[Ryan.z]

Hi you guys

I tried to design brake system for 2 wheel vehicle but I couldn't found any design guide.
firstly, I want to calculate brake force at front & rear wheel.
Anyone has design guide or detail formular to calculate it.
Thanks so much!

 

[BrianPetersen]

The limiting braking torque on the front wheel is not hard to calculate knowing wheelbase and center of gravity height in order to do this:

https://youtu.be/1RdtipNo0oQ

 

[TheTick]

It's an energy problem. How much energy needs to dissipated? How quickly?

KE = 0.5mv² ==> dissipate this much energy.

How quickly (or in what distance)? ΔKE = Fd; d=0.5at²

Then figure out the force required at the diameter of brake pad engagement. (F₁d₁ = F₂d₂)

Then, per previous post, balance front and rear such that one does not flip forward.

 

[rb1957]

from a static point of view, this is a three force member (research what that means).
this actually helps (some), in that you see Nf and Nr have two components ... due to weight and due to braking.
this helps bound the brake loads, particularly Fr (why? what limits are there for the brake component of Nr ?)

To think about the dynamic problem, ask yourself "why does the bike "pitchpole" if Ff is too big ?"

another day in paradise, or is paradise one day closer ?

 

[MintJulep]

Rotating inertia not negligible.