How high can I rev it?

[jefferyfriso]

Hey fellow Buellers! I own a 2006 city x. My question is this. I know that our Buells dont rev as high as the rice rockets, but how high can I safely bring it up to? Im not talking about a throttle wrenching and going through the gears at a stoplight, but say on the highway? I cruise at 80 and it revs pretty high up there and i begin to get scared im gonna hurt my baby if I keep it up for a prolonged period of time. Any expert advice or opinions?

[nikfleisch]

I cruise my 9R all the time around 80... around 15k no problems yet!

[user_deleted]

agree with nik and squid. these 9 motors will live all day at 4700 rpm as the piston ft. speed is still reasonable at that rpm. think of it in the same terms as having an older V-8 powered car that was red-lined at 5500rpm on the tach and you could comfortably cruise the interstate all day long at 3000rpm and never hurt a thing. it is all in the piston foot speeed per mile.

[nikfleisch]

Personally I wouldn't flip the gearing to the 12 if I had more than 1 bike. But, I don't so I use the Buell for the twisties and commutes. Although it worries me some times how high I'm cruising at I see people getting 50+k out of these motors when properly maintained. [up]

[jriffe108]

XB12 gearing results in 60 MPH @ 3000 rpm, 70 MPH is approx 3500 RPM, 80 MPH is closer to 4000 RPM.

[deathandtexas]

there's a yellow/redline for a reason... at 80 mph you should be well below the redline in 5th gear. It is made to run there.

[Theycallmecrash]

Im curious where the limits are without a rev limiter, what kinda RPM range can we adjust it too? Upgrading rods and pistons? Can it be done to increase the RPMs?

[deathandtexas]

Im curious where the limits are without a rev limiter, what kinda RPM range can we adjust it too? Upgrading rods and pistons? Can it be done to increase the RPMs?

Have you seen this thread?:

http://www.buellxb.com/Buell-XB-Forum/Buell-Firebolt-XB12-XB9/10000-RPM-aircooled-XB12...-can-it-be-done

[Theycallmecrash]

+1 [up] that was a good read and answered my question and then some

[sweb]

to be in the same subject...
is it realy bad if I reved my baby once until the rev limiter?
I mean... I had to "race" a little against an asshole in a car at a red lignt and with adrenaline, I cranked my bike till the rev limiter did his job and cut the fire. did'nt check what was the number but... if the rev limiter did his job, I assume it was a little high.
when I suddenly realized that, I pulled over slowly, let the bike run on idle for 30sec, turned it off, light up a cigaret telling me how stupid I am. then, started the bike and nothing wrong.

is it bad?
did I hurt my baby?

[Theycallmecrash]

Im sure its fine, i hit mine daily and 16500miles running good!

[go cytocis]

did I hurt my baby?

Rev limiters are meant to be bounced off of! You did absolutely no damage and you should not hesitate to redline the motor routinely!

[firefighter1c57]

to be in the same subject...
is it realy bad if I reved my baby once until the rev limiter?
I mean... I had to "race" a little against an asshole in a car at a red lignt and with adrenaline, I cranked my bike till the rev limiter did his job and cut the fire. did'nt check what was the number but... if the rev limiter did his job, I assume it was a little high.
when I suddenly realized that, I pulled over slowly, let the bike run on idle for 30sec, turned it off, light up a cigaret telling me how stupid I am. then, started the bike and nothing wrong.

is it bad?
did I hurt my baby?
I hit mine like it's a redheaded stepchild. Especially when I go from the 9 to the 12. Every onramp is a rev limiter test. I've stopped and idled it, grab the next gear and just go. That's what the rev limiter is for.