Regarding calculation of Brakes |
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Avijit
Double Secret Probation Joined: Sep/11/2013 Location: India Status: Offline Points: 7 |
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Posted: May/29/2014 at 5:10pm |
Hi, I do the brakes designing for our Mini Baja Vehicle. When I went through the calculations there was nothing like a rotor diameter mentioned anywhere but it looks like when you want to purchase a rotor from a standard company for your vehicle they expect only the "Braking Torqe"... What I would like to know is how is it that they're able to decide the rotor diameter with the help of just braking torque??Please guys help me in this.. |
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paasch
Welding Master Joined: Feb/17/2009 Location: Corvallis, OR Status: Offline Points: 234 |
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Avijit:
You decide rotor diameter, based on packaging: what will fit into your wheel. Rotors are easy to make, we typically use medium carbon steel, laser cut and surface ground. Iron can provide better properties, but is more difficult to work with.
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Bob Paasch
Faculty Advisor Oregon State SAE |
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Avijit
Double Secret Probation Joined: Sep/11/2013 Location: India Status: Offline Points: 7 |
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Actually the main problem is that I am not able to decide as how to decide and what all calcations to do to determine the size of the brake rotor....I primarily need support in that
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Richie_Dagger
Baja Godfather Joined: Sep/25/2011 Location: Las Vegas, NV Status: Offline Points: 615 |
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Why not run the biggest rotor you can stuff in your wheel? Its practically free braking force.
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Avijit
Double Secret Probation Joined: Sep/11/2013 Location: India Status: Offline Points: 7 |
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If that's the case then what for calculations are done??? I want to proceed in a proper way with all the calculations and other stuffs
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zglazer
Baja Godfather Joined: May/27/2012 Location: Metro Detroit Status: Offline Points: 593 |
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Draw some FBDs of a baja during braking. That will allow you to find your required braking torque. To find the amount of torque you can produce, you'll need to select the components in your braking system and then calculate the clamping force on the brake disc as a function of the characteristics of your components, like piston diameters and pedal ratio. Once you know the clamping force, you can figure out what the disc diameter needs to be to produce sufficient braking torque.
All the math is fairly simple. You just need to think about it for a bit. |
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Zack Glazer
McGill Baja Racing Alumnus 2009-2013 http://baja.mcgilleus.ca/ 2012-2013 Drivetrain Designer |
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vehicle dynamics
Milling Master Doesn't Understand Vehicle Dynamics Joined: May/04/2014 Location: canada Status: Offline Points: 54 |
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What is more approximate to assume for calculations.?....pedal ratio or acceleration.??
Edited by vehicle dynamics - May/31/2014 at 5:20am |
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ADD
Bolt Sorter Joined: May/21/2013 Location: INDIA Status: Offline Points: 34 |
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pedal ratio
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ronakt
Double Secret Probation Joined: Apr/30/2016 Location: INDIA Status: Offline Points: 2 |
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I am new to this forum, we would be participating in baja sae 2017 and this time our plan is to mount inboard brakes. can anyone help me with those. I am not able to find enough resources on the interenet for the same.!!
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sujandinesh
Baja Godfather Joined: Dec/27/2013 Location: Enschede Status: Offline Points: 494 |
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Yes.
But before that, why don't you try the search button in this forum? If you still have questions after that, you can always post them here.
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RVCE BAJA: 2011-2015
General Motors: 2015-2016 Tyre Testing - University Racing Eindhoven: 2016-2017 Tyre Dynamics - TASS International: 2017-2018 Tyre Engineer - Apollo Vredestein The Netherlands |
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