| Author | Message | ||
     Adoogie3 |
has anyone heard or has changed the rear sprocket on a r with the cr sprocket. Is it possible ? | ||
| Badlionsfan |
 It's been discussed over and over. Belt, sprockets and swing arm would need to be changed. Then you'd have to figure out how to fix your speedo. | ||
| Adoogie3 |
there's another brilliant move on buells part .they could of sold kits and I would of bought one. | ||
| Krassh |
Well there is a kit buy all 3 parts and you have a kit. | ||
| Badlionsfan |
Who wants to go slower anyway? | ||
| Northernyankee |
Who wants to go slower anyway? So how often have you topped out an R? Now wouldn't be nice to have more grunt off the line? | ||
| Adoogie3 |
I had mine tapped out going down hill at 155 at 9k 6 gear thats why the gearing in my opinion wouldnt make it go slower if anything at all it would be the same speed 155mph just the rpms would be tapped out at 155.I just want a race ecm!!!!! | ||
| Buellborn |
The low end power is what attracts me to twins. | ||
| Badlionsfan |
Top end speed is like a concealed weapon. Never really use it, but it's nice to know it's there.  | ||
| Adoogie3 |
It's nice to have the r gearing on the r if the bike would tap out using the gearing.that's why I would rather have the cr gearing on a r and accelerate faster.the gearing would probably make it tapout at 10.5 rpm. | ||
| Redscuell |
I've posted earlier that the CR gearing is equivalent to precisely wiping 6th gear off an R. That is, 6th gear on a CR gives precisely the same revs as 5th on the R. Some folks might not mind it; heck, the ZX-10R has to reach higher rpm in 6th than an R does in 4th for the same speed. Personally, I'd rather go the other way and match up with the CBR1000RR: a 65T rear sprocket would gear the 1125 to have the same first gear, and the same top speed before they both hit redline. Alas, too complicated for me to accomplish. | ||
| Adoogie3 |
your right about the cr gearing it would be like riding around in 5th gear on the r. I'd rather have more low end torque.my friend has a 01 r1 champion edition and his bike revs up to 12k . 6th gear on hiway he's 2ooo rpm higher than me. He has 2 tooth more in the back sprocket. | ||
| Slypiranna |
I keep reading and wondering of this subject but has anyone yet, tried it? All looks to be an improvement! Might be another added to the list this winter to do... | ||
| Timi |
Ok, you guys are sounding a little weird. I'm going out on a limb here... Ok its nice to have your cake and eat it too. But in all fairness, you want speed, RIGHT??!! Buy a damn hy-busa! That bike is the s%+t for all out speed! Trust me it will scare the pants of of Bo Duke! Ok you want handeling with your speed... Buy a damn GSXR 1000. For Petes sake, its the yard stick of ALL superbikes!! Oh its blistering fast also! Oh... You want 2 support the economy, buy USA. Buell. This is a new bike, its a VERY small segment of all sport bikes!! Give it some time. HD builds old school air coiled engines. Even tweaked, 120hp isn't enough. This is the reason 4 Rotax! But gearing isn't realy an option at this point. BUT there are some Very crafty people who'll figure it all out. As 4 me, 200mph Busa. Everything lower, 1125R!!!! Good luck but don't forget 1125 is new and all of ours are still under warr.! | ||
| Adoogie3 |
Timi the busa are about the ugliest bike in the world in my opinion And my frinds that are suzukis,yamahas,kaws riders. they all agree that the busa and thier bikes are all butt ugly too.They like the R .There only concern is the lack of go fast parts .Like a sprocket kit that wont cost a arm and a leg.Like they say theres more design and thought put into the buell and thats why i bought my R.I know that were also comparing I4s to twins but id rather improve my R than buy a piece of jap crap.Even the quality of the bikes are crappy look at the frame welds on those bikes and compare it to a R frame .Anyways my point in this forum was to bring up that a stock R will not tap out and to that why not gear it lower so that have more low end pull/speed accelleration.Anyone know of a chain conversion? | ||
| Wademan |
Latest MCN states the CR will top out only a few MPH less than the R. The CR is redline limited whereas the R is drag limited. Regardless the CR will top out quicker and be the faster overall bike until the R tops out and slowly passes it... | ||
| Slypiranna |
The new Fuell magazine just came today...says the CR is geared 8-9% lower than the R for quicker acceleration. I've decided to do the swap...looks good, even from a race standpoint. FYI, my boy down in Texas just ran the Texas Mile Land speed race with his 08 1125R... From a dead stop he ran a best of 152.9 and change with plenty of room on the tach. Think about that, an entire mile and still not topped out. Now...what do we need to do to correct the speedo? CR flash/cluster or sensor down in the case? Where's Anony? | ||
| Adoogie3 |
I figured the cr would top out about the same as the r even with 9% more gearing.now let's talk about prices of the parts you need or a chain conversion would be simplier. | ||
| Slypiranna |
I refuse to give up the belt. I wish to keep moving forward on the improvements and advantages of why the belt is used in the first place. The race chain conversion will still price out a lot more money unless an ecu and clocks have to be done for the speedo correction. Even so, I'll still take the belt route and this mod is officially on the winter list. | ||
| No_rice |
152.9 and change with plenty of room on the tach im not sure, maybe it was windy there? but everything i have ever read indicates that the 1125's speedo is one of the most spot on out there and i have seen 160's repeatedly. i've heard from a few people that have gps'd there's up near top end and have said its still basically on the money. i cant remember how long the front straight at road america is but i have seen low 160's over and over running down that. im not saying thats not what he ran, im just wondering why thats all he ran. | ||
| Slypiranna |
Stock internal 1125R...14 runs in two days at near sea level. Race prepped external...the real deal. Wheeling in the first three gears... Bike is all good/solid, no problems and with latest flash. Also tested an aftermarket race exhaust, no difference at all. This was the real deal...he did wish for 160's but 152.9+ was it's best. Fastest V-twin entered tho!...even against the Honda boys! Go figure. | ||
| Slypiranna |
Maybe road racing is a little different as your already rolling a good clip prior to the backstraight? This run was a dead start, measured mile. (Message edited by slypiranna on November 10, 2008) | ||
| No_rice |
i might have miss understood your statement earlier also. i guess i took the fact that you said it was "152.9 with more plenty of room on the tach" to mean that he was at 152 before the end and thats all it would do even though it wasnt at redline. im thinking from the last post that maybe you ment he hit 152 in the mile and it was still climbing when he shut down? | ||
| Slypiranna |
Yup, you got it No_Rice...still accelerating. That is why I believe that this is mod looks justified. I wonder how many, if any have bumped the rev limiter in 6th/road racing, on the back straight? Sorry for the confusion. | ||
| Badlionsfan |
but everything i have ever read indicates that the 1125's speedo is one of the most spot on out there..... What Sly meant was how do you correct the speedo if you were to change to the cr gearing, not that the speedo on a stock 1125r is off. | ||
| Zac4mac |
I checked the parts book yesterday. Cr and R use the same p/n for the IC. I'll check today and see if the ECM and VSS are the same parts. 08 ECM - Y0152.1AM VSS - Y0394.1AM CKP - Y0640.1AMA If all the parts are the same, it has to be software. Z | ||
| Spectrum |
Is it possible the ECM/IC are smart enough to know from the VIN number whether it's a CR/R and adjust the calculations for the speedo? | ||
| Redscuell |
Ooooh, spectrum I like the way you think. We do know that the HL/YL positions in the VIN would tell it -- if it 'recognises' what it's being told, or does anything about it. (Message edited by redscuell on November 11, 2008) | ||
| Slypiranna |
Yes, software has been pondered. Both for this question...speed correction and if one could mix 08/09 ecu's and/or gauge clusters for testing. Perhaps you'd have to purchase a CR ecu and a new cluster to make this click? Then the injectors/relocated o2's as well...here we go! Where is Anony when you need em?  Thanks Z and the rest for checking on this swap, I think it'll be worth testing this. | ||
| Zac4mac |
09 R/CR ECM - Y0152.1AM VSS - Y0394.1AMA CKP - Y0640.1AMA Looks like it's in the software/firmware. Probably is a bit set by the VIN. Something else ECM Spy needs to be able to change... Z | ||
| Slypiranna |
Would dealers be willing to "burn" this mod via digital tech II AND SUPPORT IF NEEDED...tho? Who's in for this question?...after all, if some squirrel is willing to test and shell out the coin, why not? It's only a speedo correction, right?! |
