CBR fork clip on debacle
01-21-2010, 12:36 AM
#1
Senior Member
MotoGP
Thread Starter
Join Date: Jul 2007
Location: NYC
Posts: 5,033
CBR fork clip on debacle
So this is what I still dont get. I am about to do the CBR swap but as the clip ons go, why do I need such a rise? On my SH now I have heli bars that I can mount above OR below the triples. Below kind of touches the fairings but I rode it like that for months. Why cant I just do the same with the cbr forks?? Its kinda GSXR position but I dont mind it. What am I missing?
01-21-2010, 01:01 AM
#2
Senior Member
SuperBike
Join Date: Aug 2004
Location: Atlanta, GA
Posts: 1,802
I think because they won't clear the fairing. Somebody who has used clipons with CBR forks will be along in the morning to give the definitive answer, but I think because the drop down shape of the top CBR triple causes the clipons to be mounted very low relative to the sides of the fairing the clipons must have a bunch of rise to be high enough to clear.
01-21-2010, 01:21 AM
#3
Banned
MotoGP
Join Date: Aug 2007
Location: Lake View Terrace, CA
Posts: 5,942
Well on my set up with a SP1 upper triple you need between 2.75-3.0 inches of rise just to put the bars back at the stock height. So whatever rise the heli bars you have now is the minimum rise you could use with a flat upper triple, as you say it works for you in that position (but kinda touching the fairing sounds a bit sketchy to me) . If you use one of the gull wing upper triples, you need the rise you have now plus another .75 (if I remember correctly that is how much the clamp drops) minimum if you plan on mounting the clip ons under the triple.
If you end up with enough fork above the triple to mount the clip ons you could use a much smaller rise.
If you end up with enough fork above the triple to mount the clip ons you could use a much smaller rise.
01-21-2010, 08:47 AM
#4
Senior Member
MotoGP
Join Date: Mar 2007
Location: Phoenix, AZ
Posts: 3,132
The CBR forks are shorter than the VTR forks. So you mount them with only a few mm showing above the triple. This isn't enough to mount the clipons to, so you have to put them below the triple.
The CBR upper triple is "gull winged" that is they go down below the top of the steering stem, so that puts your clipons even lower. The CBR clipons have very little rise themselves, your fingers will get pinched between the bar and the fairing.
Do you need 3.5" of rise (what I have on mine) no. You could have less rise and be more hunched over. But the 3.5" ones can be mounted lower on the forks to run less rise if you want, but you can not mount the shorter ones higher.
So get the high ones and adjust them for where you want them.
The CBR upper triple is "gull winged" that is they go down below the top of the steering stem, so that puts your clipons even lower. The CBR clipons have very little rise themselves, your fingers will get pinched between the bar and the fairing.
Do you need 3.5" of rise (what I have on mine) no. You could have less rise and be more hunched over. But the 3.5" ones can be mounted lower on the forks to run less rise if you want, but you can not mount the shorter ones higher.
So get the high ones and adjust them for where you want them.
01-21-2010, 11:50 AM
#5
Senior Member
MotoGP
Thread Starter
Join Date: Jul 2007
Location: NYC
Posts: 5,033
AHAH! That makes sense. Lazn, what bars do you have? I was gonna have a machine shop buddy just modify the CBR1000 clip ons to fit. The converti-bars seem like they will immediately double the cost of this project, which of course I dont wanna do.
01-21-2010, 12:20 PM
#8
Senior Member
MotoGP
Join Date: Mar 2007
Location: Phoenix, AZ
Posts: 3,132
LoL, a quick search on Swatt https://www.superhawkforum.com/forum...earchid=536287 will answer all your questions.
01-21-2010, 12:43 PM
#11
Senior Member
MotoGP
Join Date: Mar 2007
Location: Phoenix, AZ
Posts: 3,132
If you have a buddy that can mod the stockers, just do that. Otherwise, Swatt makes the cheapest product that works well, just be prepared for a long wait and no communication between your order and receiving the product, and don't expect to be able to return them if they don't work.
Really now that I have access to a mill and lathe, were I to do it again I'd just make my own and be done with it.
Really now that I have access to a mill and lathe, were I to do it again I'd just make my own and be done with it.
01-21-2010, 12:46 PM
#12
Banned
MotoGP
Join Date: Aug 2007
Location: Lake View Terrace, CA
Posts: 5,942
01-21-2010, 01:11 PM
#13
Senior Member
SuperBike
Join Date: Dec 2005
Location: South Lake Tahoe, CA, USA
Posts: 1,689
I used 929RR clipons mounted below the top triple clamp, with RC51 forks and triple clamps. It was a great sport riding position, lower than stock, but no fairing interference and reasonably comfortable all day long.
I have a tuned set of RC51 SP2 forks - all tuned up, if anyones interested. $400. No triple clamps, though. I also have a right 929 clipon, but not the left.
I have a tuned set of RC51 SP2 forks - all tuned up, if anyones interested. $400. No triple clamps, though. I also have a right 929 clipon, but not the left.
01-21-2010, 01:24 PM
#15
Out of my mind, back in 5
MotoGP
Join Date: Nov 2006
Location: Skurup, Sweden
Posts: 6,109
I haven't tested them... But here is an alternative that should be in the middle price range, ConvertiBars are $350+, Swatt are around $150... These are just under $300...
http://www.speedymoto.com/Merchant2/...tegory_Code=TB
http://www.speedymoto.com/Merchant2/...tegory_Code=TB
01-23-2010, 05:37 AM
#17
pragmatic anarchist
Superstock
Join Date: Mar 2008
Location: Philadelphia, PA
Posts: 380
01-23-2010, 08:26 AM
#18
Senior Member
MotoGP
Join Date: Mar 2007
Location: Phoenix, AZ
Posts: 3,132
But to be sure, use VTR ones. They will be long enough.
Edit: And I am not sure you are actually adding 3.5" does the CBR normally mount the clipons below the triple, or above? Because if they mount above, we are actually only adding something around 2"
Last edited by lazn; 01-23-2010 at 08:36 AM.
01-23-2010, 03:13 PM
#19
Administrator
World Champion
Join Date: Dec 2004
Location: Fulton, MO
Posts: 105,287
Using stock 1000RR lines will be more than enough. I happened to have some hangin on the wall in my garage. 
The 1000RR brakes are way more than you'll ever need for the street if that's what you went with.
The 1000RR brakes are way more than you'll ever need for the street if that's what you went with.
01-24-2010, 11:23 AM
#20
Senior Member
Back Marker
Join Date: May 2005
Location: Seattle, WA
Posts: 216
I put a 929 front end on mine, and used the CBR's clipons too. Mine mount above the triple (so top of the fork). I have my bike a bit more forward with around an inch of the fork up through the triple, which is plenty enough for them to attach too. No instability problems to report after several thousand miles ridden.
01-24-2010, 01:03 PM
#22
Senior Member
MotoGP
Join Date: Mar 2007
Location: Phoenix, AZ
Posts: 3,132
No, the 929 forks are somewhat longer, but not much. You can push the forks further up in the triples, I did that originally with my 954 forks, but the bike was too twitchy for my tastes. I then pushed them too far down and the bike "flopped" into corners. Finally I got the fork length as close to stock as I could and found what I liked best.
01-24-2010, 01:14 PM
#23
Out of my mind, back in 5
MotoGP
Join Date: Nov 2006
Location: Skurup, Sweden
Posts: 6,109
I believe from memory the difference is either 17mm or 20mm or something very close... So around half an inch... That makes for a pretty steep angle even when mounting 929 forks with the clipon above the triple... The 1000RR's would most likely be very nervous... I'm not sure I'd like to try that ride...
01-25-2010, 09:56 AM
#24
Senior Member
MotoGP
Thread Starter
Join Date: Jul 2007
Location: NYC
Posts: 5,033
As a reference, I run now my stock SH forks with about 25-30mm above the triple, with heli bars mounted above. Handling seems fine. All told I guess the SS lines I have for this setup should work for the CBR forks I hope.
01-25-2010, 10:08 AM
#25
Senior Member
MotoGP
Join Date: Mar 2007
Location: Phoenix, AZ
Posts: 3,132
be sure to measure the distance from the steering head to the axle before you remove your stock forks. I skipped that and that's why I had to do more tweaking than I would have if I had just done that from the onset and matched the new forks to that distance.
01-25-2010, 01:19 PM
#26
Out of my mind, back in 5
MotoGP
Join Date: Nov 2006
Location: Skurup, Sweden
Posts: 6,109
But still, like lazn said, measure the axle to the handlebar and top of the top triple (find a common point at or around the nut) before teardown to have as a reference point... It makes life a whole lot easier...
Thread
Thread Starter
Forum
Replies
Last Post
mahatmajonny
Technical Discussion
24
06-23-2012 01:12 AM
inderocker
Modifications - Performance
15
08-01-2009 11:02 AM
