hi guys,
reading a lot of post many people say the natural habitat of the beloved Xb9/12 Buell are the hill,and avoid the highway.
I want to buy the Xb just for cruise but is really terrible a highway speed constantly 85/90 mph?
If the problem if the high rpm,i can just put a smaller transmission with less tooth.It is a good solution or the best way is leave at it is?
I run 80 all day, 85 to 90 on the interstate. never been a problem.
Same here, 75-100 mph.
thanks for your feedback guys,speaking with some people about higway speed,I become paranoid.
I don' need a rocket bike, I sold the Ninjas last monts but i cant believe you can drive this bike,9 or 12, at "normal" speed !
Originally Posted by chevy350
New forum topics such as yours always amuse me. you're voicing concerns and worriment about something you haven't even "purchased" yet...and probably never will? laughable.
HERE IS CORRECT FORMULA-SPECIFICATIONS-CALCULATIONS TO DETERMINE PROBABLE XB INTERNAL ENGINE WEAR RATES
WEAR RATES BASED ON TIME-TESTED MEAN PISTON SPEED FEET PER MINUTE MATHEMATICAL FORMULA
FORMULA: Piston Speed in feet-per-minute = stroke x rpm ÷ 6
BUELL XB9 STROKE IS 3.1 INCHES
BUELL XB12 STROKE IS 3.8 INCHES
BUELL XB9 RPM IN STOCK TOTALLY STOCK CONFIGURATION @ 95MPH IS 5000RPM
""""""""XB12 """""""""""""""""""""""""""""""""""""""""""""""""" """"""""""""""""" 4450RPM
BUELL XB9 PISTON FPM IS 2584
BUELL XB12 PISTON FPM IS 2819
common sense correlation of these numbers reveals that the XB12 is flirting with unsustainable internal component integrity if asked to sustatin these speeds for hours on end. how many "hours" solely at the discretion of the rider.
ON ALL 2003-2007 XB MODELS, in all likelihood, the crank assembly...specifically the main crank pin and bearing....will give out long before the "top end" will experience accelerated wear damage.
Ive ran at 90mph for hours on end more times than i can count on my xb12. Bike has 17k miles and doesnt make a single funny sound. Theres no danger in it whatsoever.
here's to hoping you divulged that to the guy in MI you just sold the bike to. a perspective buyer certainly would want to know that.
I dont really understand where you are coming from. If it was harmful to run the bike at 80 mph in its highest gear for long periods, why didn't eric regear it to have a lower cruising rpm? I would trust the engineers at Buell over a bunch of people on a forum. Especially since that motor is a derivation of harley's EVO, an already rock solid powerplant. The engine is capable of over 7k rpm. running at 50-70% of that for long periods isn't damaging. My ranger fuel cuts out at 5500. On highway cruises at 80mph its turning 3100 rpm or more, again in the 50-70% range. 140k on it without a single hiccup.
If it was harmful to run the bike at 80 mph
first it was "in excess of 90mph"...and now it's 80mph. odd.
why didn't eric regear it
it's spelled Erik
Especially since that motor is a derivation of harley's EVO
more internet-derived nonsense.
I would trust the engineers at Buell over a bunch of people on a forum.
hypocrite. you trusted us enough to literally BEG us to guide you thru endless problems and provide solutions. i find that not only incredibly annoying but hypocritical and unappreciative as hell.
My ranger fuel cuts out at 5500.
motorcycle and pickup truck comparative arguments never cease to amuse me.
I got ”problem” on my XB9 when cruising in 80-85 mph in hot weather some days ago, so called skip spark mode for about 1 minute. Any idea why this happened in ”only” 31-32 degrees celsius? I am sure you guys have higher temps in summer and your bikes seem to work fine.
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