The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > SPORTSTER MOTORCYCLE FORUM > Sportster Motorcycle Era Specific and Model Specific > Rubber Mount Sportster Motorcycle Talk (2004-2006)
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Notices

Rubber Mount Sportster Motorcycle Talk (2004-2006) This area is to discuss issues, problems and anything else unique to the 2004 and above Sportster motorcycles

Active Threads
0 Shovster build take2
Last Post: Ferrous Head
Posted On: 1 Minute Ago
Replies: 1
Views: 56
0 Wont Fire up!
Last Post: IXL2Relax
Posted On: 11 Minutes Ago
Replies: 2
Views: 35
0 Ebay ****evil knievel bike****
Last Post: Ferrous Head
Posted On: 13 Minutes Ago
Replies: 5
Views: 156
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Stairman
Posted On: 43 Minutes Ago
Replies: 47,779
Views: 7,655,302
0 Keep & Kill
Last Post: Crusty
Posted On: 50 Minutes Ago
Replies: 17,565
Views: 1,017,540
0 ....1
Last Post: Graywolf
Posted On: 1 Hour Ago
Replies: 5,582
Views: 324,737
0 Hottie of the day, no nudity.
Last Post: Stairman
Posted On: 2 Hours Ago
Replies: 20,151
Views: 2,055,273
0 Anyone go racing last weekend?
Last Post: gusm2
Posted On: 2 Hours Ago
Replies: 3,192
Views: 326,429
0 Iree's late night cafe
Last Post: ~Grind~
Posted On: 3 Hours Ago
Replies: 1,598
Views: 214,042
0 clutch issue
Last Post: juzyHD
Posted On: 5 Hours Ago
Replies: 13
Views: 213
0 Warm/hot kickstart
Last Post: Mission1
Posted On: 6 Hours Ago
Replies: 17
Views: 2,636
0 "S" model specific Q&A
Last Post: Hippysmack
Posted On: 7 Hours Ago
Replies: 2,010
Views: 407,382
0 This week on Craig's list
Last Post: Tim The Grim
Posted On: 8 Hours Ago
Replies: 4,708
Views: 624,987
0 N65C or N65A
Last Post: lespaul6
Posted On: 9 Hours Ago
Replies: 21
Views: 1,299
0 1972 Build thread please subscribe
Last Post: Tim The Grim
Posted On: 9 Hours Ago
Replies: 72
Views: 4,661
0 Big bore kit vs salvage 1200 engine
Last Post: Hellbent_4
Posted On: 10 Hours Ago
Replies: 40
Views: 4,403
0 XR mutt race bike progress
Last Post: Ferrous Head
Posted On: 10 Hours Ago
Replies: 25
Views: 1,279
0 KT - 2020 - Where Eagles Dare
Last Post: IXL2Relax
Posted On: 10 Hours Ago
Replies: 50
Views: 10,233
0 Top end failure
Last Post: Mission1
Posted On: 10 Hours Ago
Replies: 33
Views: 1,413
0 Current projects (2 of them anyway)
Last Post: Ferrous Head
Posted On: 10 Hours Ago
Replies: 40
Views: 1,482
0 Rubber mount gas tank part
Last Post: IXL2Relax
Posted On: 10 Hours Ago
Replies: 1
Views: 127
0 Coil polarity
Last Post: davesz1r
Posted On: 10 Hours Ago
Replies: 26
Views: 705
0 '86 xl1100 help hooking up lights
Last Post: IXL2Relax
Posted On: 11 Hours Ago
Replies: 2
Views: 126
0 If You Have An '04+ (Buell's too), Please Read (Oil Usage)
Last Post: Steve9
Posted On: 12 Hours Ago
Replies: 160
Views: 26,448
0 In need of input....69XLCH Stroker build
Last Post: Ferrous Head
Posted On: 13 Hours Ago
Replies: 60
Views: 2,930
0 old style fender skirted
Last Post: NLXL
Posted On: 16 Hours Ago
Replies: 64
Views: 12,201
0 Difference in Clutch Levers 45356-07 vs kit 44992-07
Last Post: Hippysmack
Posted On: 16 Hours Ago
Replies: 4
Views: 134
0 My take on the world ~ Photo by Trace
Last Post: Hippysmack
Posted On: 16 Hours Ago
Replies: 1,087
Views: 156,407
0 Ground Up Beginner Build
Last Post: Hippysmack
Posted On: 18 Hours Ago
Replies: 14
Views: 758
0 Sportster Fork Upgrade
Last Post: PetesPonies
Posted On: 18 Hours Ago
Replies: 81
Views: 16,240
More...
Members Birthdays
Gold951 (69), tujbob (65), tcspannerwrench (54), rondog (51), scootsgal (49), barney27 (46)
Tags
brake pads, brakes, rotor, sintered

Reply
 
Share Thread Tools Display Modes
  #11  
Old 20th June 2018
Glamazon Glamazon is offline
Custom Bike Builder
 
Join Date: Dec 2014
Location: Thornton, NW Lancs
Posts: 2,378
Sportster/Buell Model: xl883r sold
Sportster/Buell Year: 2014
Reputation: 4645472
Glamazon has a reputation beyond reputeGlamazon has a reputation beyond reputeGlamazon has a reputation beyond reputeGlamazon has a reputation beyond reputeGlamazon has a reputation beyond reputeGlamazon has a reputation beyond reputeGlamazon has a reputation beyond reputeGlamazon has a reputation beyond reputeGlamazon has a reputation beyond reputeGlamazon has a reputation beyond reputeGlamazon has a reputation beyond repute
Default

I find the twin discs on my 883R superb. I rode a friend's 54 Triumph T110 with a half width single leading shoe brake in 1979, now that was a bad brake! You could always look for a front end from a chop builder. Try braided stainless brake lines, they perked up the brakes on my Honda 500/4 & Triumph T140 Bonneville for a relatively inexpensive improvement
Reply With Quote
  #12  
Old 20th June 2018
sml1226 sml1226 is offline
Chief Harley Engineer
 
Join Date: Apr 2015
Posts: 552
Sportster/Buell Model: XL1200R
Sportster/Buell Year: 2004
sml1226 has disabled reputation
Default

14 883R would be the newer style brakes. I thought the 16 CX was great with that setup. I don’t know if they just paired the master and caliper better, or if the new calipers are really that much better. The old style never felt as nice as the two bikes I’ve been on with the 14+ setup.

I’m not sure of the piston bore on those, but just going to the newer Sportster caliper is probably an option too. It may need a different master cylinder, and those are meant for the newer 300mm rotor size, but the new Sporty brakes definitely do feel better to me than the older ones.
Reply With Quote
  #13  
Old 20th June 2018
jzink0883's Avatar
jzink0883 jzink0883 is offline
Master Bike Builder
 
Join Date: Sep 2006
Location: Elgin, IL
Posts: 2,054
Sportster/Buell Model: XL1200CP
Sportster/Buell Year: 2015
Sportster/Buell Model #2: XLH1200 (traded in)
Sportster/Buell Year #2: 1998
Reputation: 4790779
jzink0883 has a reputation beyond reputejzink0883 has a reputation beyond reputejzink0883 has a reputation beyond reputejzink0883 has a reputation beyond reputejzink0883 has a reputation beyond reputejzink0883 has a reputation beyond reputejzink0883 has a reputation beyond reputejzink0883 has a reputation beyond reputejzink0883 has a reputation beyond reputejzink0883 has a reputation beyond reputejzink0883 has a reputation beyond repute
Default

Quote:
Originally Posted by Folkie View Post
I think the stock brakes on my '15 CB are pretty good.
+1

These are the stopping distances of three bikes tested in the June 2012 issue of Motorcycle Consumer News:
- 2012 Harley-Davidson Sportster 72 (560#): 120.7’
- 2012 Kawasaki Versys (460#): 122.4’
- 2012 Triumph Speed Triple (480#): 128.7’

A reader asked MCN how the single-disc Harley with a skinny 21” front tire could have better stopping numbers than the lighter dual-disc bikes. MCN’s answer was that the Sportster’s weight distribution and low center of gravity meant the rear tire could contribute more to braking and that enabled the short distance for a single stop.
__________________
jzink0883, '15 XL1200CP, it ain't butt jewelry, it's a ride

Last edited by jzink0883; 20th June 2018 at 09:03..
Reply With Quote
  #14  
Old 20th June 2018
jammantoo's Avatar
jammantoo jammantoo is offline
foot in mouth member
 
Join Date: May 2014
Location: trust me, it is in the middle of nowhere
Posts: 464
Sportster/Buell Model: 48
Sportster/Buell Year: 2016
Other Motorcycle Model: Dou-glide
Other Motorcycle Year: 63
Reputation: 859815
jammantoo has a reputation beyond reputejammantoo has a reputation beyond reputejammantoo has a reputation beyond reputejammantoo has a reputation beyond reputejammantoo has a reputation beyond reputejammantoo has a reputation beyond reputejammantoo has a reputation beyond reputejammantoo has a reputation beyond reputejammantoo has a reputation beyond reputejammantoo has a reputation beyond reputejammantoo has a reputation beyond repute
Default

Quote:
Originally Posted by jzink0883 View Post
+1

These are the stopping distances of three bikes tested in the June 2012 issue of Motorcycle Consumer News:
- 2012 Harley-Davidson Sportster 72 (560#): 120.7’
- 2012 Kawasaki Versys (460#): 122.4’
- 2012 Triumph Speed Triple (480#): 128.7’

A reader asked MCN how the single-disc Harley with a skinny 21” front wheel could have better stopping numbers than the dual-disc sport bikes. MCN’s answer was that the Sportster’s weight distribution and low center of gravity meant the rear tire could contribute more to braking and that enabled the short distance for a single stop.
This is very true and important to remember when working with the brake system

No matter what, the NORMAL sportater just does not have a performance designed brake system.

I have had a sporty in the remuda since the 70s, along with the sportster has always been a sportsbike of some type and I also ran 250 two strokes in club races on roadrace tracks in the 80s and 90s.
There is a huge difference in both the design of the master and slave cylinders of the Sporty and a sportsbike.

You actually did improvements with the full floating disc and the SS line, it is just your Master cylinder does not give the feedback that other ones do. that is not an issue to most riders so HD does not have a need to improve it. And those who it is an issue with normally go with some aftermarket brakes anyway such as Performance Machine.

My current sporty has a single disc up front, with all sporty cylinders, it works as good as I push the sportster and I have only once complained. And that was a panic stop when I first got the bike. I now know the bike good enough that I could shut it down a lot faster.

If you want more feeling out of the brakes you will need to change the master and slave, and get a matched set, too many guys get masters with the wrong bore size. IT IS IMPORTANT to get the correct bore for the calipers, and number of calipers that you will be using. Sportster brakes are really not that bad for what the bike is designed for. But if you want to be able to get the feedback of a performance brake system, then you are not able to use stock sporty parts, they are not designed for that.

Being able to have brake feel such as the OP describes comes from having a complete system designed for EACH ITEM in the system. Just hodge podging a system together is dangerous as mismatched parts can result in brake performance being degraded not improved.

Full floating disc will improve any disc system, it smooths out any imperfection in the disc

SS braided lines are only as good as the design of those lines, cheap SS braided lines can actually be worse than well designed ones. make sure you are not getting cheap look good SS braided lines. Buck up and get a good set if you want performance.

ON A PERFORMANCE brake system.........
Calipers and masters need to be matched in so that the bore and stroke of the master is sufficient for, and will not over power the slave units, that means a single master be used with a single slave and a master designed for a double slave system be used with double disc.

I used GSXR masters and slaves on my sportster track bikes, I also beefed up a lot of items on the bike so that the thing did not get squirrelly in corners when braking that hard. I really do not see the need of those kind of brakes on my 48 as I do not push it that hard. And the stock swingarm tends to twist when you hang out the rear end spinning the tire tucked into a curve to get it to step out and square out a corner.

Good luck straitening out the brakes. One thing I love about sportsters is they are just a canvas, it is up to each owner to paint his own picture.
__________________
Join the PEANUT CLUB, it gives you an excuse to stop and smell the roses
Reply With Quote
  #15  
Old 20th June 2018
Diogenes415's Avatar
Diogenes415 Diogenes415 is offline
Flat Track Racer
 
Join Date: Feb 2018
Location: KY & MI
Posts: 234
Sportster/Buell Model: XL1200C
Sportster/Buell Year: 1998
Sportster/Buell Model #2: XL1200C
Sportster/Buell Year #2: 2000
Other Motorcycle Model: XL883C
Other Motorcycle Year: 2006
Reputation: 344247
Diogenes415 has a reputation beyond reputeDiogenes415 has a reputation beyond reputeDiogenes415 has a reputation beyond reputeDiogenes415 has a reputation beyond reputeDiogenes415 has a reputation beyond reputeDiogenes415 has a reputation beyond reputeDiogenes415 has a reputation beyond reputeDiogenes415 has a reputation beyond reputeDiogenes415 has a reputation beyond reputeDiogenes415 has a reputation beyond reputeDiogenes415 has a reputation beyond repute
Default

As jammantoo mentioned, matching the master cylinder to the caliper(s) is a must. At the risk of redundancy from another thread here is a page that helps explain what ratios to look for and a ratio chart... I used that these past few decades with great success both on and off the track.
http://www.vintagebrake.com/mastercylinder.htm

Also, many riders overlook the fact that road grime and detergent residue left behind after washing your bike greatly reduce the effectiveness of your brakes. Even some brake specific cleaners sold on the market can leave contaminates behind. Acetone is easily the best solution to keep your brake contact surfaces absolutely clean.
Reply With Quote
  #16  
Old 21st June 2018
sml1226 sml1226 is offline
Chief Harley Engineer
 
Join Date: Apr 2015
Posts: 552
Sportster/Buell Model: XL1200R
Sportster/Buell Year: 2004
sml1226 has disabled reputation
Default

Quote:
Originally Posted by Diogenes415 View Post
As jammantoo mentioned, matching the master cylinder to the caliper(s) is a must. At the risk of redundancy from another thread here is a page that helps explain what ratios to look for and a ratio chart... I used that these past few decades with great success both on and off the track.
http://www.vintagebrake.com/mastercylinder.htm

Also, many riders overlook the fact that road grime and detergent residue left behind after washing your bike greatly reduce the effectiveness of your brakes. Even some brake specific cleaners sold on the market can leave contaminates behind. Acetone is easily the best solution to keep your brake contact surfaces absolutely clean.
That’s the ratio I was running with in making the recommendation to not change the master and pick up a touring caliper. Of course, that doesn’t account for stroke, but as was mentioned, with HD parts, these aren’t going to be performance systems, where that stroke change makes a big difference to your feel. You probably won’t see that without using performance parts end to end.

Stock 06 single disc is 1/2” master. The ratio is going to be something like 25.4:1 with that caliper, without touching the master. A 12mm bore would be a little better for that “ideal” ratio, but both are going to be close.
Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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

Forum Jump



All times are GMT +1. The time now is 13:32.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC