Modifications - Performance Discuss aftermarket and DIY performance modifications

CBR1000rr fork swap, what other master?

Old 06-21-2010, 08:08 PM
  #1  
Senior Member
MotoGP
Thread Starter
 
smokinjoe73's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 4,924
smokinjoe73 is on a distinguished road
CBR1000rr fork swap, what other master?

So the fork swapped transformed the handling of the bike whic has a single sided swingarm on it. My only issue is that I found some 3" rise handlebars but the brake lever is huge & prevents all but gentle left turns at slow speed. What other master is similar but not so protruding? I have an old VTR one but it seems like a step backward as these brakes are so powerful I am now spoileed to weaker ones
smokinjoe73 is offline  
Old 06-22-2010, 03:16 AM
  #2  
Out of my mind, back in 5
MotoGP
 
Tweety's Avatar
 
Join Date: Nov 2006
Location: Skurup, Sweden
Posts: 6,109
Tweety is on a distinguished road
Originally Posted by smokinjoe73 View Post
So the fork swapped transformed the handling of the bike whic has a single sided swingarm on it. My only issue is that I found some 3" rise handlebars but the brake lever is huge & prevents all but gentle left turns at slow speed. What other master is similar but not so protruding? I have an old VTR one but it seems like a step backward as these brakes are so powerful I am now spoileed to weaker ones
Well, unfortunately the reason the master is so protruding is that it's a radial one... You won't find anything equivalent that doesn't stick way out...

That said, the cylinder size is actually 17mm and the closest you will get to the same effect with less bulk is a RC51 SP1 or 929 master as they are 19mm... The RC51 SP2 and 954 masters are also 17mm I believe (memory?!)
Tweety is offline  
Old 06-22-2010, 04:49 AM
  #3  
Senior Member
SuperSport
 
residentg's Avatar
 
Join Date: Feb 2010
Location: NY State
Posts: 667
residentg is on a distinguished road
there is a chart on the UK forum somewhere with all the sizes
residentg is offline  
Old 06-22-2010, 05:10 AM
  #4  
Senior Member
MotoGP
 
mikstr's Avatar
 
Join Date: Apr 2005
Location: Montreal
Posts: 5,560
mikstr is on a distinguished road
I think the piston diameter is 19mm BTW (same Nissin unit as I am using I beleive, mine coming from a 2006 ZX-6R).

One thing to remember when assessing MC (notably raidals) is that piston diameter is but one factor in determining the leverage, the other being the pivot distance. For example, Brembo makes three radial MCs with 19mm pistons: 19X16, 19X18, 19X20 where teh second number indicates the distance of the pressure point from the pivot. The 16 requires less squeeze but more lever travel, the 20 is the opposite, a hard squeeze but little travel.

AS Markus (Tweety) mentioned, any radial MC will give leave you with the same issue. Your best bet is to go with an axial set-up. Find out what the piston sizes are int eh calipers and use teh numerous chart available (here and on VTR1000.org) to figure out which MC will give you the braking characteristics you are seeking.

Last edited by mikstr; 06-22-2010 at 05:12 AM.
mikstr is offline  
Old 06-22-2010, 05:52 AM
  #5  
Out of my mind, back in 5
MotoGP
 
Tweety's Avatar
 
Join Date: Nov 2006
Location: Skurup, Sweden
Posts: 6,109
Tweety is on a distinguished road
Originally Posted by residentg View Post
there is a chart on the UK forum somewhere with all the sizes
Which is a direct copy of a list I was part of compiling a long while ago on this forum...

I'm not going to say it, you all know how to find it...
Tweety is offline  
Old 06-22-2010, 06:09 AM
  #6  
Senior Member
MotoGP
 
mikstr's Avatar
 
Join Date: Apr 2005
Location: Montreal
Posts: 5,560
mikstr is on a distinguished road
Hey Markus, I just sent you an e-mail.... now back to our regularly scheduled discussion.....
mikstr is offline  
Old 06-22-2010, 08:15 AM
  #7  
Senior Member
MotoGP
Thread Starter
 
smokinjoe73's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 4,924
smokinjoe73 is on a distinguished road
OK, search it is but this is the info I needed to do so. First I am going to try to turn the handlebars around to create more clearance. Here is a pic of where I am now
Attached Thumbnails CBR1000rr fork swap, what other master?-race-6.15.10-cieling-leak-120.jpg  
smokinjoe73 is offline  
Old 06-22-2010, 09:09 AM
  #8  
Out of my mind, back in 5
MotoGP
 
Tweety's Avatar
 
Join Date: Nov 2006
Location: Skurup, Sweden
Posts: 6,109
Tweety is on a distinguished road
Originally Posted by smokinjoe73 View Post
OK, search it is but this is the info I needed to do so. First I am going to try to turn the handlebars around to create more clearance. Here is a pic of where I am now
Woah, sorry... that may have hit another target than intended...

It was meant as a friendly poke at residentg.. Plus I was to lazy to do the search since I didn't need the info myself...

I belive my first reply gives a decent solution to the swap question if you end up needing that... Hopefully not though, a radial master feels quite different from a non-radial... I'd keep that if possible...
Tweety is offline  
Old 06-22-2010, 09:58 AM
  #9  
Sprung
World Champion
 
Hawkrider's Avatar
 
Join Date: Dec 2004
Location: Fulton, MO
Posts: 105,285
Hawkrider will become famous soon enoughHawkrider will become famous soon enough
I am actually perfectly happy using the stock m/c with the radial calipers of the 1000RR. You should give it a try and see what you think. Good power, not wooden, good initial bite, still a solid lever.
Hawkrider is offline  
Old 06-22-2010, 08:17 PM
  #10  
Senior Member
MotoGP
Thread Starter
 
smokinjoe73's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 4,924
smokinjoe73 is on a distinguished road
OK so I am gonna try the handlebar turnaround & then the stock master. From there I think a 954 or cbr600
smokinjoe73 is offline  
Old 06-22-2010, 09:35 PM
  #11  
Senior Member
Back Marker
 
toy4xchris's Avatar
 
Join Date: Nov 2009
Location: Oxnard, Ca
Posts: 233
toy4xchris is on a distinguished road
this might sound dumb but you ever think of just moving the reservoir to the m/c and using a longer hose to connect them then you could move it farther inward to where the inner end of the clip-on is?
toy4xchris is offline  
Old 06-22-2010, 10:16 PM
  #12  
Senior Member
MotoGP
Thread Starter
 
smokinjoe73's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 4,924
smokinjoe73 is on a distinguished road
Shockingly, (or not) I not only thought of this, but did it. I made the bracket that held the resevoir shorter to tighten it to the handlebar. But as it turns out, the res is not the limiting factor, its the actual brake lever & how far it protrudes forward from the bar itself. It is the radial design I know, but like I said, now that I went radial, I dont wanna go back. The saga continues
smokinjoe73 is offline  
Old 06-22-2010, 10:45 PM
  #13  
Senior Member
MotoGP
Thread Starter
 
smokinjoe73's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 4,924
smokinjoe73 is on a distinguished road
OK so after all this I CANT find the the master chart on this forum. Even with a few searches. Anyone know what the thread is called?
smokinjoe73 is offline  
Old 06-23-2010, 01:09 AM
  #14  
Out of my mind, back in 5
MotoGP
 
Tweety's Avatar
 
Join Date: Nov 2006
Location: Skurup, Sweden
Posts: 6,109
Tweety is on a distinguished road
Tweety is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
scooter72
Modifications - Performance
15
03-16-2014 02:39 PM
Modifications - Performance
5
10-27-2010 07:52 AM
TODDSPEED
Modifications - Performance
52
12-09-2008 01:27 PM
icebud
Modifications - Performance
72
09-14-2007 08:33 PM
iscoot
Modifications - Performance
3
06-25-2007 08:29 PM


Thread Tools
Search this Thread
Quick Reply: CBR1000rr fork swap, what other master?


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.