HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
REGISTER   |   LOGIN   |   HELP
Comments
View Comments: Newest First|Oldest First|Threaded View
<<  <  Page 5/5
Critic
User Rank
Platinum
Nice Article
Critic   11/30/2012 9:51:49 AM
NO RATINGS
Nice job on the article, Mr. Murphy!

Typically, an automotive master cylinder is actuated by a rod, either from the brake booster or directly from the pedal.  The rod is not generally directly attached to the piston in the master cylinder.  It is not uncommon for the piston to hang up in the bore after brake release, and for the brakes to drag a little.  This is not usually a problem, and the brakes don't usually drag to the extent that they smoke.

It doesn't surprise me that there would be corrosion in a boat trailer brake cylinder.  Boat trailers are often submerged in water, and sometimes in salt water!  The brake cylinder used in a corrosive environment like this should either be well-sealed or made of materials that don't corrode, like the one that you installed.

KUBSME
User Rank
Iron
Smoking Brakes
KUBSME   11/30/2012 9:47:38 AM
NO RATINGS
Hydraulic brake systems are not maintenance free.  Brake fluid, being hydrophilic, will absorb water over time and the corrosion seen on the aluminum piston/bore is the end result.  Bleed your system out yearly refilling with a high quality brake fluid from a fresh, unopened container and you will greatly reduced the chances of this type of failure.

agriego
User Rank
Gold
Feedback
agriego   11/30/2012 9:27:50 AM
NO RATINGS
Excellent article!! I hope that a note about this was sent to the manufacturer to let them know about the fault in their system.

Tim
User Rank
Platinum
Re: Good job
Tim   11/30/2012 2:53:03 AM
I have heard "You know most normal people call a plumber."  I usually reply with "I am not normal, I am an engineer." 

JimT@Future-Product-Innovations
User Rank
Blogger
Re: Good job
JimT@Future-Product-Innovations   11/29/2012 11:42:50 PM
NO RATINGS
Psssst .....  That's my wife's line:  "Normal People don't do that!"  I hear it all too often!

jmiller
User Rank
Platinum
Re: Good job
jmiller   11/29/2012 10:14:46 PM
NO RATINGS
I wonder the same thing.  Of course, there are other times when I take something apart and can't get it back together that I realize sometimes normal people don't have it so bad.

JimT@Future-Product-Innovations
User Rank
Blogger
Would have guessed broken "return" spring
JimT@Future-Product-Innovations   11/29/2012 2:27:37 PM
NO RATINGS
Good article with a clear thorough explanation of the mechanisms.  As I was reading, I mentally concluded that the actuator simply needed a stronger, more robust "return" spring.  I wouldn't have continued into the internal cylinder and discovered the corrosion!  Good work - Very thorough.

Tim
User Rank
Platinum
Detail
Tim   11/29/2012 12:37:23 PM
NO RATINGS
Good job on supplying the detail of surge brake operation. You would not normally expect to see corrosion inside the master cylinder which isctypically a sealed environment. Good article.

Jim_E
User Rank
Platinum
Good job
Jim_E   11/29/2012 8:47:43 AM
NO RATINGS
Good job troubleshooting and repairing the problem!  I never fully understood the operation of surge brakes, but I have a good understanding now.

Every time I end up delving into an odd situation like this and finding a solution, I always wonder to myself "What do normal people do when things like this happen?"  :)

 

<<  <  Page 5/5


Partner Zone
Latest Analysis
The National Highway Traffic Safety Administrationís recent backup camera mandate could open the door to more vehicle innovations, including better graphical displays, 360-degree camera views, and the increased use of Ethernet.
With support from National Instruments, a group of dedicated students from Connally High School in Austin, where more than 50% of the students are at risk of not graduating, have created a successful robotics team that is competing in the FIRST World Championships.
Solar Impulse 2 -- a 100% solar-powered airplane -- has been completed. It features several advanced materials, some developed specifically for next year's attempted around-the-world flight.
Sherlock Ohms highlights stories told by engineers who have used their deductive reasoning and technical prowess to troubleshoot and solve the most perplexing engineering mysteries.
Lumus and eyeSight have partnered to create consumer-grade devices that offer all the prime functions of smart glasses without the bulk.
More:Blogs|News
Design News Webinar Series
3/27/2014 11:00 a.m. California / 2:00 p.m. New York / 7:00 p.m. London
2/27/2014 11:00 a.m. California / 2:00 p.m. New York / 7:00 p.m. London
12/18/2013 Available On Demand
11/20/2013 Available On Demand
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Apr 21 - 25, Creating & Testing Your First RTOS Application Using MQX
SEMESTERS: 1  |  2  |  3  |  4  |  5


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Class: April 29 - Day 1
Sponsored by maxon precision motors
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service