| Author | Message | ||
     1125rcya |
How does the battery directly relate to power? I got my bike back from HD today; they finally did a harness upgrade, which I thought was done over 3kms ago. To my surprise the bike had much more power than when I took it in. HD put it on the trickle charger while in shop overnight. The reason I took it in was for a loose steering stem. HD let me know it was fine. I checked it and it seems solid, but when I checked it last was after a 4 hour ride and it had some play in it. (heat and wheelies must be a factor). I am having a surge at idle which started a week ago, so I’ll take off the air box cover once again for inspection. I'm still happy with the bike! | ||
| 1125rcya |
since no one wants to put their 2 cent in I am guessing theres no connection.  Way to to show a fellow bueller some love | ||
| Liquorwhere |
Well I can tell you my bike has been running pretty bad since the harness upgrade, the problem is I have been traveling across the states and finally it has gone completely and it is in a dealership waiting diagnosis. I can say that the charging system codes didn't start until Arizona, but it has been running poor since Monarch Pass.... | ||
| 1125rcya |
Wow,Are you stuck in Colorado? | ||
| 1125rcya |
Is the battery is too small! "The larger battery would be good here! Note that the bike may keep running. The system voltage will drift down as the battery discharges, so the current drawn will drop somewhat, "extending" the run time. Depending on the ignition system, the plugs may keep firing at the reduced voltage. Fuel injection might become decidedly unhappy. So, it may run longer, but that also means the bike must be operated in the "charging" mode longer to replenish the charge in the battery." Does anyone kinda get where im going with this? Stator maybe power loss codes thrown for low fuel... (Message edited by 1125rcya on July 22, 2010) | ||
| Clk92vette |
I have an ’08 R and can vouch for the fact that my bike does not run well when the battery is low on juice. I rode it into work the other day and my battery light actually came on for a moment while I was riding. Either my battery is on its last leg or something is up with my charging system. It almost didn’t crank over, two or three times in the last week. But I just haven’t had the time to trouble shoot it. Prior to charging my battery, the voltmeter was reading between high 11’s and high 12’s. I gave it a 12 amp-hour charge and it completely changed, the voltmeter was reading from mid 12’s to low 14’s and she went from bucking bronco to Rico Suave smooth. | ||
| Ezblast |
Lowest I see with the harness and Erik Buell Racing ecm is 12.8 so far, with an average of 13.2 to 13.4. EZ | ||
| Usanigel |
Engine running volts should be above 13.2 at all times, if not you're running on the battery. System needs to overcome the internal resistance of the battery to charge it. Each cell puts out 2.2 volts and x6 = 13.2volts. You will never measure 13.2 on a charged battery because of internal resistance but you need to exceed it to charge. Modern day batteries are much better than the old ones and this is why you can read 12.6 volts for fully charged. back in the day same reading taken was 12 volts. | ||
| 1125rcya |
Thats good to know about where engine running volts. I was running at 11.9 to 12.6 before the harness now I see 13.4 to 14.1 and much more power.  | ||
| Tpoppa |
On mine...post harness upgrade with new stator, new regulator, & new battery: Without the fans at hwy speeds volts are 13.7-14.2 With fans running at hwy speeds volts are 12.9-13.1. At idle with fans running, volts drop to 12.1-12.2, sometimes the battery light kicks on. The harness upgrade doesn't seem to allow for enough power at idle, which could be a problem if you get stuck in traffic. | ||
| Froggy |
The ECM will monitor the voltage and will not allow the battery to die. | ||
| Tpoppa |
The ECM will monitor the voltage and will not allow the battery to die. I disagree, twice. Perhaps mine is not installed correctly, but my dealer is one of the better Buell dealers around. | ||
| Usanigel |
Many on here have had the bike die due to failed charging systems and the ECM has done nothing to prevent this. If it has tell us how it works. | ||
| Dannybuell |
---All--- New stator 1200 miles ago and it's starting again. Right after I picked it up I was thinking that it was alive! It's 1969 all over again. The battery tender idea was first presented to me in 1970. As a H.S. junior I was very excited to buy a used 69 CB 450 Honda. After a week or so it became obvious that it wouldn't hold a charge. I was encouraged by my riding buddies to put a trickle charger on it and forget about it. Riding off the battery is not really safe. That Honda bike was a POS, the carbs wouldn't stay synched, the points were burning, the stator was bad. Just like 1969, emerging producers with Quality Control issues. Froggy - some say that. Tpoppa - "The harness upgrade doesn't seem to allow for enough power at idle, which could be a problem if you get stuck in traffic." I couldn't have said it any better. The urban riding environment was not considered. (Message edited by dannybuell on July 23, 2010) | ||
| Froggy |
Simple, it switches the relay and turns the stator back to full output. The ECM can't prevent your bike from dying if the stator isn't putting out enough of a charge. Just like a ABS system can't help you if you drive off a cliff. | ||
| Tpoppa |
Just last week, I watched my 09 R idle until the volts dropped into the 10s then it stalled...On my way home, I got stuck in about 6-7 minutes of traffic (mostly at idle). When I got home volts were around 12.5. I let it idle in my driveway to see what would happen. After less than 3 minutes, SYS VOLTAGE error then is stalled. Sidenote: When the CT gets over 205 the volts seem to drop faster. Is this the temp where the fans run on high? The dealer said the stator was undamaged. They checked the harness & relay. For some reason, they replaced the battery, but I really don't think that was the problem. I suspect it'll be back at the dealer soon. | ||
| Froggy |
The error means your stator is dead. It probably was putting out enough voltage when they tested it (cold bike?), but now that you have the error message you should have no problem getting them to replace the stator. |
