| Author | Message | ||
     Jscott |
XBRR rider report. http://www.motorcycle-usa.com/Article_Page.aspx?ArticleID=3771&Page=1 | ||
| Josh_cox |
See the Crevier vid in there? NIIIICE. | ||
| Blake |
Excellent. Thanks for posting the link! | ||
| Jlnance |
I'm supprised it uses a dry clutch. I'm also supprised he liked the transmission so much. I don't think it has the helical gears that everyone likes so much in the 06 models. I had assumed it had an 05 based transmission in it. | ||
| Whodom |
I think he's wrong about the dry clutch. I can't imagine how you could do one with the closed primary chain. He was probably just hearing the lifters, pushrods, and rocker arms, something he's never heard on a motorcycle engine before.  | ||
| Jimidan |
Who is correct, it does not have a dry clutch. I have heard these bikes running many times and have never confused that issue. I know a dry clutch...a dry clutch is a friend of mine...and that is no dry clutch. I have a booming 998 Ducati with a Bucci slipper on it. Now that thing is loud! BTW, excellent article there Jscott! jimidan | ||
| Mutation_racer |
My XBRR came with a stock XB clutch and i've had no problem with it . you have to know how to launch it and that we do | ||
| Josh_cox |
Ours does not have a dry clutch. However, we are getting a slipper clutch now. Tired of chattering (read gets sideways) the rear tire in to corners. | ||
| M1combat |
I'm sure he was hearing a slipper... But yeah... coulda just been the valves  . | ||
| Jackbequick |
"..you have to know how to launch it..." I know the gearing will vary with the track, and that the Daytona 200 gearing made 1st gear good to about 90 MPH. But how do they deal with the that on the start line with the XBRR's? Wind it up and use the clutch to keep it out of the rev limiter? You can't let the clutch fly, spin the back tire, and feather the throttle to control the amount of hookup can you? Maybe its something that you don't want to talk about but it would be interesting to know. I love it when they put the onboard cameras on the hands or a feet of a rider. Jack | ||
| Blake |
Back tires on sportbikes don't usually spin on take off. The problem to avoid is the wheelie. Clutch modulation (feathering the clutch), just like during a start in a drag race is the most common way to achieve optimum launch. It is difficult to learn and takes practice, but it is the quickest way to go. I totally dig the onboard cameras too. | ||
| Jimidan |
Why don't the XBRR's come with the clutch with the cush drive? It looked like they had these at Mid-Ohio on the 999. With the chain, it needs a cush drive. Why did they develop this if they were not going to install it in every bike? jimidan | ||
| Blake |
What makes you think they don't all have the clutch mounted cush drive? | ||
| Josh_cox |
They do have cush drive built into the back of the clutch basket . You have to take the basket out to see it. | ||
| Jimidan |
Blake sez: "What makes you think they don't all have the clutch mounted cush drive?" It could have been something that Mutant Racer said: "My XBRR came with a stock XB clutch and i've had no problem with it . you have to know how to launch it and that we do" He should know...he's got one...I don't. jimidan | ||
| Mutation_racer |
That would be correct jimidan. as fare as launching it goes i launch my 12R just like i launch myXBRR 4500 RPM's and feather the clutch out . it usually carrys the tire all the way into and out of second gear. now on th eRR i do feather it just a bit more , but still the RPM's that i start at are the same for both bikes | ||
| Blake |
Thanks for the clarification Josh. All XBRRs have a clutch mounted cush drive integrated with a stock clutch. Cool. | ||
| Anonymous |
Clairification: All XBs have compensation springs (a mini-cush drive) in their rear primary sprocket/clutch basket. So does an XBRR; the only parts that are different are the compensation springs, which are stiffer, as is the main clutch spring. | ||
| Rocketman |
So let me get this right. The XBRR, a race bike built specifically for the 'budget' club racer has a pretty much stock XB clutch? Why does a race bike that would clearly benefit from a slipper clutch not come from Buell with one? I mean for what, a thousand dollar increase in retail price, surely those getting their hands on an XBRR would have a more competitive race bike. I just don't get the level of Buells commitment to racing, then the lack of it. Not much has changed in 8 years when one looks at the bigger picture. Why don't Buell finish the job off instead of leaving the better and often more serious improvements necessary, to the customer? This mentality has afflicted the street bikes, and now the race bike too? Just my usual rant. Please ignore me. Rocket | ||
| Trojan |
I think you'll find that the XBRR does now have a slipper clutch from STM. It just took them a while to develop it. | ||
| Reepicheep |
They were holding off putting in the slipper clutch... they were waiting for your prototype Rocket! | ||
| Ebear |
Actually , and correct me if I'm wrong Anon.....The original Slipper Clutch was developed on the track starting with Daytona and was in the Sonoma bikes...but was a product of , or associated with , "HillBilly Motors????...As Trojan says it may now be an STM Product, | ||
| Anonymous |
The slipper clutch we are using and shipping now is an STM product, developed by STM. We have used other slipper clutches, including one developed for and sold by Hillbilly-Motors Motors. We have not tested the latest revision of that clutch, but will this fall. We very much appreciate all the support that Jens has given us, and our understanding is that the latest version of his clutch works very well, as demonstrated by Jens own endurance racing -- we just haven't had time to test it on an XBRR during the racing season once we had an initial answer to our slipper clutch issues. You can't appreciate how valuable your limited track testing time is to a racing program until you've been there. | ||
| Rocketman |
Reep, I offered Buell my services, and joke as you may, I did take the research further just out of curiosity. It can be done I'm glad to report. See the thing is, like I said at the time when Mr Buell felt some satisfaction about mocking me, Buell had someone else design, develop and manufacture a slipper clutch for them. So what makes Buell anymore creditable than I? That they had someone do it for them? Rocket | ||
| Anonymous |
O My gosh, it can be done?! Really? Your research has taken care of it all? Why did we bother to work with four potential suppliers with all their experience and have them build all those failed prototypes when they could have just called you, Rocket? Oh if we had only known! | ||
| Eboos |
 | ||
| Glitch |
 | ||
| Alex |
Anonymous, go for the HBM slipper clutch. As Jensī personal engine builder and tuning engineer I would be glad to offer a little bit of R&D for Your race engine. What do You think? Best regards Alex M-TeK Engineering | ||
| Rocketman |
O My gosh, it can be done?! Really? Your research has taken care of it all? Why did we bother to work with four potential suppliers with all their experience and have them build all those failed prototypes when they could have just called you, Rocket? Oh if we had only known! Which is how and why Alex and Jens succeeded where you didn't. Which kinda proves my point given you know diddly squat about who I am. Rocket | ||
| Glitch |
You know Diddly Squat!? Prove it! I want to see a picture of you and Diddy together. And remember, I can tell a PhotoShop job a mile away.  |
