| Author | Message | ||
     Paulxb12r |
Just got back from HD my bike is running rough at 60mpr in 5 gear which is around 3000rpm. They are trying to tell me that this is to low of an RPM and I should be running on less than 3500 to 4500 RPM but it never had a problem 3000 or even less before what do you guys think and what RPM do you run? | ||
| Barker |
According to my calculations a XB12 should be @ 2937rpm @ 60mph.  What are they tring to say? A transmission fairy changed your gearing? (Message edited by barker on February 15, 2008) | ||
| Barker |
FYI XB9 should be @ 3282 @ 60mph 5th gear. | ||
| Pwnzor |
They are giving you a line of crap. Your bike should never "run rough". Depends on what you mean by rough, but it could be almost anything. I'd start by checking out the spark plugs and wires. | ||
| Slaughter |
Yeah, run it in 4th gear, wear the engine out sooner, they get to do a rebuild for you sooner. Yes, if you are playing at canyon racing, 4500 RPM is more of a "sweet spot." But for just going from point A to point B - 3000-3500 RPM gives good mileage and the motor is definitely going to be running cooler. | ||
| Paulxb12r |
yes your right barker i was doing a bit of rounding off so is 2937 to low of a rpm? | ||
| Gentleman_jon |
The bike should run smoothly at 60 in fifth gear. Very smoothly. It is a bit difficult to diagnose your problem via the internet. Without putting too fine a point on it, many HD dealers are not capable of fixing Buells, and have developed the deplorable habit of being less than candid with their customers. I would get in touch with Buell Customer Service to find a dealer who is better equipped to fix Buells. Many brothers have found that buying the Shop manual and the parts book, and working on the bike themselves to be a better solution. The bikes are basically pretty simple and easy to keep running well. | ||
| Paulxb12r |
Depends on what you mean by rough, it will fell like a little bump in the road but their is no bump. | ||
| Barker |
"2937 to low of a rpm" To low? Thats how it came from the factory. These lumps are known for grunt on the low end. Run from that dealer. Your bike should not perform "rough" any where between 1050rpm and redline. | ||
| Xl1200r |
Your dealer is on crack. I cruise at 50mph on my bike in 5th, which is about 2500rpm if I remember correctly. That's about as low as I'll go, and she doesn't seemed to be bothered by it. I'd write more but I'm at work it's lunch time. Later, lol. | ||
| Paulxb12r |
i think i be headed for boston in the next week or 2 are their any good dealers up that way? | ||
| Barker |
May I recommend a a trip to: http://www.seminolebuellshop.com/ | ||
| Damnut |
Paul....... I am on vacation next week if you make it to Boston. I can take a look at your bike for you. I also have the VDST software and can give you a TPS reset if needed. If you're in Boston with your bike there are plenty of us around that can help you out. We are better than ANY dealership around. Post up on the NEBO thread in Storm Fronts if you make it to New England. We can take you for a nice spirited ride as well.  (Message edited by damnut on February 15, 2008) | ||
| Gentleman_jon |
Liberty HD in Rahway , New Jersey is on your way to Boston, and they have a pretty good service department. They race Buells, rent 1125R's, throw a great party, and are pretty good guys. http://www.libertyharley.com/ PS: I would definitely take Damnut up on his offer, and then start a local Buell group where you live. Buelligans helping Buelligans is the best. (Message edited by gentleman_jon on February 15, 2008) | ||
| Paulxb12r |
Thanks damnut it I do get up to Boston by next week I will definitely take you up on that | ||
| Damnut |
Even if it is after next week my door is ALWAYS open to help a fellow Bueller. | ||
| Damnut |
LOL I just have to move my bike out of the kitchen to get yours in.......  | ||
| Paulxb12r |
nice bike by the way i am think of painting my header black to. | ||
| Jlnance |
it will fell like a little bump in the road but their is no bump. If you're describing what I think you are, that is the fuel injection system adjusting itself. Is is something you might miss if you aren't looking for it? Sort of feels like a cylinder missed, but doesn't sound like it? It seems to be particularly noticeable at 3100 rpm, which is about 65 mph in 5th gear. So that may be normal, though if it just appeared it might bear some looking into. You might want to do another TPS reset. The RPM range to run the bike is mostly a separate issue. I did some experiments, the results of which are here: http://www.badweatherbikers.com/buell/messages/142 838/279307.html As a result, I now rarely use 5th gear. Other people have tried, and some get the same results that I do, and some don't. Try it yourself and see. | ||
| Cataract2 |
Paul, are you taking yours to Ocala? IF so then I suggest taking it up to Gainesville HD. They should be able to help you out. Talk to Paul at the parts counter. | ||
| Danger_dave |
>>>A transmission fairy<< Bwahahahaah! | ||
| Barker |
Transmission fairy, Rare and elusive woodland creature.  I had one constantly trying to lock up the tranny in 2nd and trying to drink my tranny juice outta my massey ferguson Model 35(My old M. Fer). Pesky little boogers. | ||
| Ft_bstrd |
I got this email from Al Lighton last night response to my inquiry of what was described to me as a "weak impulse" at 3,000 RPM: The issue is that when operating in closed loop, from 2-4K light load steady state, the bike runs alternately slightly rich then slightly lean, back and forth. That's how the ECM keeps the fueling, ON AVERAGE, at 14.7:1. But occasionally, when commanding it lean, it overshoots and goes to far lean for a few cycles. It figures it out and fixes it, but not before there was some weak combustion cycles. 3,000 RPM is a magic point in the fuel map twist the throttle a little and problem is gone. Run it a little lower RPM and because the engine vibrations increase and you don't notice it as much. | ||
| Glitch |
Isn't 3000rpm the magic EPA testing rpm? Might explain why it's leaning out in that area. | ||
| Old_man |
My XB9S will run smoothly as low as 2000rpm in any gear, and pull smoothly from there. They're full of it. | ||
| Glitch |
Yeah, but they're riding 12s, everyone knows Nines run smoother.  | ||
| Pwnzor |
everyone knows Nines run smoother. Must be real smooth way back there behind us...  | ||
| Ezblast |
3500 to 6500 on my commuter and 4000 to 7500 on the weekend toy - EZ | ||
| Azxb9r |
I dont let mine drop below 2500rpm or it surges a bit. Most of my riding is from 3000-5000 rpm, but my normal cruising rpm is right about 3000(except on the highway). I dont experience any surging or hiccuping. Maybe it is just a difference between the 9 and the 12.  Ft. Bs post makes sense. The injection system on these bikes is rather primitive, and slow responding. This could lead to a surge or mild "fishbite" condition, especially if the ecm is "learning" at the time. | ||
| Natexlh1000 |
I allow my X1 to truck around about 2000 RPM on back roads. It doesn't do anything weird. No pinging or surging as long as I don't do anything stupid with the throttle. I have the race brain and a loud pipe. Still runs smoother than an ironhead. |
