Technical Discussion Topics related to Technical Issues

Weak rear brakes?

Thread Tools
 
Search this Thread
 
Old Oct 12, 2009 | 02:46 PM
  #1  
LC4CARL's Avatar
Thread Starter
Member
Squid
 
Joined: Jul 2008
Posts: 39
From: Clackamas, OR
LC4CARL is on a distinguished road
Weak rear brakes?

Otherwise they seem to function normally. Pedal pressure is normal, brakes don't drag. I doubt if it is strong enough to lock the wheel.

Thoughts?


Old Oct 12, 2009 | 03:50 PM
  #2  
Hawkrider's Avatar
Administrator
World Champion
 
Joined: Dec 2004
Posts: 105,287
From: Fulton, MO
Hawkrider will become famous soon enoughHawkrider will become famous soon enough
That's probably a good thing. You should rely on your front brakes most of the time anyway. Yeah, you stop quicker using both brakes, and that's what I teach in MSF....blah, blah, blah....but I rarely use the rear on the street and never use it at the track. All you really need the rear brake to do is settle the rear in certain situations.
Old Oct 12, 2009 | 03:55 PM
  #3  
Tweety's Avatar
Out of my mind, back in 5
MotoGP
 
Joined: Nov 2006
Posts: 6,109
From: Skurup, Sweden
Tweety is on a distinguished road
Trust me you can lock the rear up... It takes a bit of effort or slippery surface... But it's possible...

But as Greg said... It's only supposed to be used to balance out the bike when clamping down on the front brakes...

If you can hold the rear brake and it holds the bike in a slight incline... Then it works as intended...
Old Oct 12, 2009 | 04:39 PM
  #4  
Galaxieman's Avatar
Senior Member
Superstock
 
Joined: Apr 2005
Posts: 371
From: No longer in 'The Suck'!!!
Galaxieman is an unknown quantity at this point
My bike just passed 34k, and I'm still sporting the original rear brake pads with some 80% of the pad material left. Hold the bike on an incline, and stop when I'm riding in the dirt and gravel sections just before getting to the house... otherwise, not so much.
Old Oct 12, 2009 | 05:37 PM
  #5  
zmaniv's Avatar
Senior Member
SuperSport
 
Joined: Jun 2008
Posts: 916
From: San Diego
zmaniv is on a distinguished road
There's a rear break on these bikes????????????
Old Oct 12, 2009 | 07:04 PM
  #6  
nuhawk's Avatar
Senior Member
MotoGP
 
Joined: Sep 2006
Posts: 4,138
From: Austin, Tx
nuhawk is on a distinguished road
Originally Posted by zmaniv
There's a rear break on these bikes????????????
Yeah, really!
I'm glad other people pay for this ****.

Read, read, read, it's free.free.free.
Old Oct 12, 2009 | 10:02 PM
  #7  
shayne's Avatar
Senior Member
SuperSport
 
Joined: Dec 2005
Posts: 963
From: Sunshine Coast, Australia
shayne is on a distinguished road
Your user name leads me to believe you may own a KTM dirt bike. My KTM has a VERY strong rear brake, so if you are used to this then the VTR will feel like it is not working at all.

Unlike a lot of road riders I use the rear brake a lot. Guess it is my dirt bike background. But as mentioned above, it has adequate stopping power, as it is really only used for cornering to assist the bike to turn and to settle the rear end.
Old Oct 12, 2009 | 10:38 PM
  #8  
Karbon's Avatar
Senior Member
Back Marker
 
Joined: Jul 2009
Posts: 117
From: Santa Cruz, CA
Karbon is on a distinguished road
yes. the rear brake on my hawk is very weak. It require very very intentional effort to lock the rear in a straight line. I imagine the folks at honda intended so.
Old Oct 13, 2009 | 01:19 AM
  #9  
jonesey's Avatar
jonesey
Squid
Squid
 
Joined: Sep 2008
Posts: 77
From: essex uk
jonesey is on a distinguished road
I changed the rear master cylinder on my vtr for a brembo one from an r1, don't ask why i just did cos i could- a lot more power, and will lock the rear wheel on a dry road... it's an easy mod to do, just need to make the holes in the mount 1-2mm larger.
Chris.
Old Oct 13, 2009 | 03:24 AM
  #10  
cameron's Avatar
Senior Member
Superstock
 
Joined: Nov 2008
Posts: 286
From: texas
cameron is on a distinguished road
i usually use the rear brake to finish off at stop sighns. now i think about it i use alot of rear brake.
Old Oct 13, 2009 | 06:35 AM
  #11  
comedo's Avatar
Senior Member
SuperSport
 
Joined: Nov 2007
Posts: 807
From: Hamilton, Ontario, Canada
comedo is on a distinguished road
Replacing the stock brake line with a braided stainless one will improve stopping power at the rear.
Old Oct 13, 2009 | 06:49 AM
  #12  
LC4CARL's Avatar
Thread Starter
Member
Squid
 
Joined: Jul 2008
Posts: 39
From: Clackamas, OR
LC4CARL is on a distinguished road
Cool. I just wanted to make sure that was all it had. It takes a deliberate effort to get much power out of it.

Been riding it for two years like this so I "get" the front brake thing.

Yeah, started off on KTM's. Great times / good memories.

Once I crashed my buddies new CRF and broke the rear brake pedal. Initially I was a bit freaked, but found quickly that one could maintain a respectable pace with just the front binder and engine braking.

Maybe I'll try the brake line.



Old Oct 13, 2009 | 06:55 AM
  #13  
Stevebis1's Avatar
Senior Member
SuperSport
 
Joined: Sep 2008
Posts: 805
From: Delmar NY
Stevebis1 is on a distinguished road
My rear brake sucks too - could be all the chain lube I splash on it when oiling my chain

Seriously, just put HH pads on front and back. Really REALLY feel them up front. (hear them too interesting Shhhhhhh sound) but the back only seems marginally better. Probably a good thing. In an emergency I don't want to accidentally lock up the rear.
Old Oct 13, 2009 | 07:56 AM
  #14  
nath981's Avatar
Senior Member
MotoGP
 
Joined: Aug 2006
Posts: 2,934
From: altoona, pa
nath981 is on a distinguished road
Originally Posted by jonesey
I changed the rear master cylinder on my vtr for a brembo one from an r1, don't ask why i just did cos i could- a lot more power, and will lock the rear wheel on a dry road... it's an easy mod to do, just need to make the holes in the mount 1-2mm larger.
Chris.
good info jonesey. Did you use SS line with this upgrade?

Rear Brake usage: Previously, never used it because of warnings of tipover/loss of control. Gradually learned to use rear approaching stop and while stopped to avoid creating hot spots on hot front brakes and to free up throttle hand. Then started using rear brake turning from stop to modulate throttle, to keep turn tight, and to stay in lane. Recently starting using the rear brake to help modulate fork dive if and when you need to suddenly get on the front brakes mid-turn and to keep the bike more controlled when entering and driving out of turn. SH rear brake works well enough for my purposes so far, but will upgrade because of more confidence with rear brakes usage.

I find that the rear brake is now an integral tool for faster, more controlled and smoother turning and regret not learning this skill years ago. With all the rear brake uses including wheelie height control, it may be wise to install a thumb brake to keep the right foot positioned for balance and leg control?
Old Oct 13, 2009 | 01:24 PM
  #15  
LC4CARL's Avatar
Thread Starter
Member
Squid
 
Joined: Jul 2008
Posts: 39
From: Clackamas, OR
LC4CARL is on a distinguished road
Originally Posted by nath981
With all the rear brake uses including wheelie height control, it may be wise to install a thumb brake to keep the right foot positioned for balance and leg control?

Uhh, I'm not quite there yet...
Old Oct 13, 2009 | 02:27 PM
  #16  
VTRsurfer's Avatar
Senior Member
MotoGP
 
Joined: May 2008
Posts: 3,452
From: San Clemente, CA
VTRsurfer is on a distinguished road
With over 180,000 miles of street riding, I've never worn out a set of rear brake linings/pads. I do make a point of using the rear brake at least once per ride (use it or lose it factor). Otherwise I only use it during emergency stops or when a yellow light catches me.

And if you're on the front brakes hard, you don't want to put too much pressure on the rear with the rear end unweighted, or you will lock it up and could go down.
Old Oct 13, 2009 | 02:32 PM
  #17  
CentralCoaster's Avatar
Senior Member
SuperSport
 
Joined: Jul 2008
Posts: 987
From: San Diego, CA
CentralCoaster is on a distinguished road
I've locked the rear brake before on a panic stop and dragged the rear wheel for about 40 feet.

I don't think it's correct to say a rear brake shouldn't be capable of locking up. The rotor size, piston size, line pressure, and lever ratio all determine how much braking torque it has.

A weak brake might lock up at speeds up to 25 mph. A more powerful brake might be capable of locking up at speeds up to 50 mph. But at every speed above 25, that more powerful rear brake will decrease your stopping distances if used wisely. And above 50, you can grab at it all you want.

You can actually hold a constant pressure on your rear brake while slowing, and it'll slow you down fine until you get below a certain speed, it may lockup. It's counterintuitive.
Old Oct 13, 2009 | 02:33 PM
  #18  
VTRsurfer's Avatar
Senior Member
MotoGP
 
Joined: May 2008
Posts: 3,452
From: San Clemente, CA
VTRsurfer is on a distinguished road
That photo isn't the reincarnation of the old Elsinore Grand Prix from several years ago, is it?
Old Oct 13, 2009 | 02:33 PM
  #19  
CentralCoaster's Avatar
Senior Member
SuperSport
 
Joined: Jul 2008
Posts: 987
From: San Diego, CA
CentralCoaster is on a distinguished road
I've locked the rear brake before on a panic stop and dragged the rear wheel for about 40 feet.

I don't think it's correct to say a rear brake shouldn't be capable of locking up. The rotor size, piston size, line pressure, and lever ratio all determine how much braking torque it has.

A weak brake might lock up at speeds up to 25 mph. A more powerful brake might be capable of locking up at speeds up to 50 mph. But at every speed above 25, that more powerful rear brake will decrease your stopping distances if used wisely. And above 50, you can grab at it all you want.

You can actually hold a constant pressure on your rear brake while slowing, and it'll slow you down fine until you get below a certain speed, it may lockup. It's counterintuitive.
Old Oct 13, 2009 | 02:44 PM
  #20  
Red_Liner740's Avatar
Senior Member
Back Marker
 
Joined: Jul 2008
Posts: 243
From: Toronto, Ontario
Red_Liner740 is on a distinguished road
during normal city driving i use the rear brake in combination with the front....i also use the rear brake to determine how much traction the surface has....how quickly or with how much force it locks up the rear tire tells me how much traction is available...during spirited rides....no, like people said, to settle a bike before a corner or mid corner corrections....but with the VTRs engine breaking just letting go of the gas slightly will slow it down a lot....

that lack of engine breaking freaks me out on my zx7r....WHY ARENT U STOPPING!?! oh right, no engine brake...duuh
Old Oct 13, 2009 | 04:59 PM
  #21  
skokievtr's Avatar
RUNLEVELZERO #99
SuperBike
 
Joined: Jan 2007
Posts: 2,219
From: Skokie
skokievtr is on a distinguished road
I actually replaced my rear pads with SBS low-friction pads. While I do use the rear, I do so to settle the suspension or when front traction could be compromised on low grip surfaces. I tried the EBC HH rear pads and immediately replaced them (if anyone wants them) because they made locking up the rear waaay too easy!
Old Oct 13, 2009 | 05:38 PM
  #22  
nath981's Avatar
Senior Member
MotoGP
 
Joined: Aug 2006
Posts: 2,934
From: altoona, pa
nath981 is on a distinguished road
Originally Posted by skokievtr
I actually replaced my rear pads with SBS low-friction pads. While I do use the rear, I do so to settle the suspension or when front traction could be compromised on low grip surfaces. I tried the EBC HH rear pads and immediately replaced them (if anyone wants them) because they made locking up the rear waaay too easy!
yea i'll try them. I'm going to buy front EBC HH front pads. I'll PM you.
Old Oct 13, 2009 | 09:35 PM
  #23  
LC4CARL's Avatar
Thread Starter
Member
Squid
 
Joined: Jul 2008
Posts: 39
From: Clackamas, OR
LC4CARL is on a distinguished road
Originally Posted by VTRsurfer
That photo isn't the reincarnation of the old Elsinore Grand Prix from several years ago, is it?

Wow! Very nice.

2003. I met Scot Harden and Jimmy Lewis there. It was a good day.
Old Oct 14, 2009 | 08:56 AM
  #24  
VTRsurfer's Avatar
Senior Member
MotoGP
 
Joined: May 2008
Posts: 3,452
From: San Clemente, CA
VTRsurfer is on a distinguished road
Originally Posted by LC4CARL
Wow! Very nice.

2003. I met Scot Harden and Jimmy Lewis there. It was a good day.
I was a spectator at the 1970, '71 and '72 Elsinore Grand Prix, back when Steve McQueen was riding in it. I did a slide show on the '72 race for my Color Photography class at Cal State Long Beach, including a great close up shot of the guy with his dog on the tank as he raced through Downtown Elsinore.

The spectator crowd increased about 10 fold from '71 to '72. There were people standing on top of houses and buildings everywhere. Fun times.
Old Oct 14, 2009 | 06:14 PM
  #25  
LC4CARL's Avatar
Thread Starter
Member
Squid
 
Joined: Jul 2008
Posts: 39
From: Clackamas, OR
LC4CARL is on a distinguished road
Awesome. Great memories.

My buddy, Motozilla, rode his GS. At least part way...







Here I am, uh, messing around.


Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
WhOrD
General Discussion
15
Feb 25, 2013 02:28 PM
HU112BU
Modifications - Performance
4
Oct 9, 2012 09:23 PM
dondiggdy
Technical Discussion
3
Jul 23, 2009 11:15 AM
CentralCoaster
Technical Discussion
9
Nov 12, 2008 03:05 PM
Death Cattle
General Discussion
14
Feb 28, 2008 02:51 PM




All times are GMT -7. The time now is 02:45 PM.


Top

© 2026 MH Sub I, LLC dba Internet Brands



When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.