Rear Brakes Stopped Working - Triumph Forum: Triumph Rat Motorcycle Forums
» Main Menu

Discussion Forums
 » Twins
 » Tiger
 » General
 » RAT

Features
 » Blogs

Motorcycle.com Links

Contribute
 » Photo

Motorcycle Forums
» Insurance
» Sponsors
» Our Partners
»ATV Reviews
»Motorcycle Games

Twins Technical Talk Technical Talk for Hinckley Triumph Twins: Bonneville, T100, Speedmaster, America, Thruxton, and Scrambler.

Reply
 
LinkBack Thread Tools Display Modes
Old 12-02-2012, 02:41 AM   #1 (permalink)
Senior Member
SuperStock
Main Motorcycle: 2010 Bonneville
 
Join Date: Oct 2012
Location: Cheltenham, UK
Posts: 277
Rear Brakes Stopped Working

So I had a funny one today whilst riding through heavy traffic for about 6kms. It was stop start and tight so I rode the read brake for a bit, however after a while it stopped working! Worth mentioning it was also around 34 degrees out.

If I pressed the brake I could push the lever all the way down with no resistance at all.

After that I stopped filtering and just used my front brake, after another 20 min the rear brake comes back to life and works again.

Whats the deal? A 2008 Bonneville doesn't have electronic brakes?
Mr*Beaver is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 12-02-2012, 03:49 AM   #2 (permalink)
Senior Member
SuperSport
Main Motorcycle: Thruxton
 
plodalong's Avatar
 
Join Date: May 2009
Location: Griffith NSW Australia
Posts: 1,350
Other Motorcycle: 08 Bonneville efi
Most likely moisture of possilby air in the brake fluid. Moisture (water) is absorbed into the fluid and lowers the boiling point of the fluid creating vapour bubbles which are compressible and either gives more lever movement or stop the brakes working completely when they get hot. Time for fluid replacement, Ment to be replaced every couple of years.
__________________
07 thrux,breathe,Dna airfilter,airbox X restrictor,135 mains,tp +3 ignitor,yss emulators,hp springs, Bitubo shocks,pingle steering damper,D9 layflat,3" rise clipons,corbin seat, tt350 taillight,alloy indicators.shorai battery,Changes daily
plodalong is offline   Reply With Quote Quick reply to this message
Old 12-02-2012, 08:41 AM   #3 (permalink)
Senior Member
Formula Extreme
Main Motorcycle: 2012 T100
 
norton74's Avatar
 
Join Date: Jun 2012
Location: Stockbridge, MI
Posts: 728
Other Motorcycle: 2013 Rocket 3 Touring
Extra Motorcycle: '73 Ducati GT750
You may have had the rear master cylinder piston hang up due to corrosion. Probably not the case; but, it's what happened to my '79 Bonneville.

As a precaution, I would flush the brake fluid and bleed the brakes both front and rear.
norton74 is offline   Reply With Quote Quick reply to this message
Old 12-02-2012, 12:37 PM   #4 (permalink)
Senior Member
Formula Extreme
Main Motorcycle: Ducati Monster S4RS
 
Hypurone's Avatar
 
Join Date: Jul 2010
Location: NorCal
Posts: 688
Other Motorcycle: Triumph Thruxton
Quote:
Originally Posted by norton74 View Post
You may have had the rear master cylinder piston hang up due to corrosion. Probably not the case; but, it's what happened to my '79 Bonneville.

As a precaution, I would flush the brake fluid and bleed the brakes both front and rear.
You are on the right track. The M/C probably experienced a "by-pass" due to an internal cup sealing or check valve issue. Hence the intermittent workings... Flushing can help if the system's fluid is degraded, contaminated or has moisture etc. But once it happens it usually only gets worse and happens more often. I would cut to the chase and replace the M/C flush the fluid and call it a day...
__________________
Chuck's Garages Thruxton
Camaro
Monster
'10 Thruxton 944cc - In the Faster Color
"You Were Really Flyin' When I Passed You Back There!"
Hypurone is offline   Reply With Quote Quick reply to this message
Old 12-02-2012, 04:50 PM   #5 (permalink)
Senior Member
World SuperBike
Main Motorcycle: 05 T100
 
Join Date: Apr 2005
Location: Hertfordshire, UK
Posts: 2,277
Other Motorcycle: Don't need another one!
Sounds like boiling brake fluid to me too. Has it ever been changed? As Plodalong said, it should be changed every 2 years as a matter of course irrespective of mileage. Try the simple (and cheap) stuff first, before making it more complicated than it probably is.
__________________
Paul.

Herts. UK
Aubergine & White 05 T100 (865cc) with numerous mods.
(Previously Ducati Monster S4 and several UJMs)
PAAS is offline   Reply With Quote Quick reply to this message
Old 12-02-2012, 04:53 PM   #6 (permalink)
Premium Member
Site Supporter
Team Owner
Main Motorcycle: 2003 Bonnie
 
Demonic's Avatar
 
Join Date: Nov 2010
Location: Edinburgh
Posts: 5,038
Other Motorcycle: 2003 Speed Triple 955i
Extra Motorcycle: Monkeybike!
Yup, spend a couple quid (dollars, whatever) on fluid, rather than hundreds (or whatever they cost) on new parts...
__________________
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
If knowledge can create problems, it is not through ignorance that we can solve them.
Isaac Asimov
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
Demonic is online now   Reply With Quote Quick reply to this message
Old 12-02-2012, 05:16 PM   #7 (permalink)
Senior Member
SuperSport
Main Motorcycle: 2007 Bonnie T100
 
bonza's Avatar
 
Join Date: Sep 2007
Location: Melbourne, Australia
Posts: 1,321
Other Motorcycle: Jeep Wrangler
with the amount of rain and humidity they get in Brisbane I'm betting moisture in the brake fluid as plodalong says. change the fluid on both brakes
__________________
2007 Tuxedo T100.
AI & Snorkel gone, Dom Tourers, 40/120/1 shim 3 turns, TTP stage 1, Hagon Nitros, Dart screen, Pingel fuel valve, Monza gas cap, Avon Roadriders
I like a man who grins when he fights -
Winston Churchill
bonza is offline   Reply With Quote Quick reply to this message
Old 12-03-2012, 04:32 AM   #8 (permalink)
Senior Member
SuperStock
Main Motorcycle: 2010 Bonneville
 
Join Date: Oct 2012
Location: Cheltenham, UK
Posts: 277
I'm gona roll with brake fluid as first course. I didn't get any service history with the bike, although I know some things have been done, this isn't one of them.

It's just annoying as I was planning on doing it along with the pads in a couple of weeks, but haven't sourced the pads... anyone know where I can get some pads from quickly without paying premium prices?
Mr*Beaver is offline   Reply With Quote Quick reply to this message
Old 12-03-2012, 04:38 AM   #9 (permalink)
Senior Member
SuperSport
 
RICHW's Avatar
 
Join Date: Mar 2008
Location: Miami, Florida USA
Posts: 1,147
On a 2008 I would also check your rear pads - they tend to wear out.
__________________
please keep your distance

26 B0NNEVILLE T1
my garage pics and specs
RICHW is offline   Reply With Quote Quick reply to this message
Old 12-03-2012, 06:22 AM   #10 (permalink)
Senior Member
SuperStock
Main Motorcycle: 2010 Bonneville
 
Join Date: Oct 2012
Location: Cheltenham, UK
Posts: 277
rear pads are *fine* at the mo - this isn't the issue in this case.
Mr*Beaver is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Triumph Forum: Triumph Rat Motorcycle Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter your valid email address, that can receive an automated confirmation message. Otherwise, you won't be able to gain full access.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Tachometer stopped working pochie Classic, Vintage & Veteran 5 09-05-2011 09:01 AM
Rear Stop Light suddenly stopped working rnexussix Speed Triple Forum 7 06-04-2010 07:52 PM
Tach stopped working Tonka Twins Technical Talk 4 09-01-2009 04:01 AM
Speedometer stopped working DanR Twins Technical Talk 3 02-11-2008 09:30 AM
RS speedo stopped working jellero Sprint Forum 7 06-16-2005 08:55 AM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 04:32 PM.



Motorcycle News, Videos and Reviews
Honda Grom Forum Harley Davidson Forum Honda 600RR Kawasaki Forum Yamaha R6 Forum Yamaha FZ-09 Forum
1199 Panigale Forum Roadglide Forum Honda CBR1000 Forum Vulcan Forum Yamaha R1 Forum Yamaha R3 Forum
Ducati Monster Forum Harley Forums Honda CBR250R Forum ZX10R Forum Star Raider Forum Yamaha Viking Forum
Suzuki GSXR Forum V-Rod Forums Honda Shadow Forum Kawasaki Motorcycle Forum Star Warrior Forum KTM Duke 390 Forum
SV650 Forum BMW S1000RR Forum Honda Fury Forum Kawasaki Versys Forum Drag Racing Forum Ducati 899 Panigale Forum
Suzuki V-Strom BMW K1600 Triumph Forum Victory Forums Sportbikes BMW NineT Forum
Volusia Forum BMW F800 Forum Triumph 675 Forum MV Agusta Forum HD Street Forum Suzuki GW250 Forum
Yamaha Motorcycles Victory Gunner Forum Honda Vultus Forum HD LiveWire Forum

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.

Search Engine Optimization by vBSEO 3.6.0