| Author | Message | ||
     Froggy |
The ECM flash came out about 4 months before the harness did. | ||
| Fast1075 |
The 17 volt spike definately screams voltage regulator....what happened while it ran wild is anybody's guess... | ||
| Avc8130 |
Why are you running the harness with a custom rewound stator anyways? ac | ||
| Tpoppa |
Justin, Is it possible that your rewound stator is putting out more than 520w? If so, that could fry a VR. | ||
| Jdugger |
> Is it possible that your rewound stator is putting out more than 520w? If so, that could fry a VR. Back to Ohm's law from the other thread: The stator doesn't "put out" so much as it's "drawn from". | ||
| Tpoppa |
jeez, stators are rated on out put (see your manual), can we move on? | ||
| Jdugger |
> stators are rated on out put (see your manual), can we move on? Correct, but the stator does not push out the output, it's drawn from, and the load on it determines that. It really is an important detail. Another way to think about it: If your description of the problem were accurate, any time you plugged a clock radio into the same outlet intended for a refrigerator, the clock would blow up. But it doesn't... why? (Message edited by jdugger on August 04, 2010) | ||
| Tpoppa |
so...we can't move on?  The stator is putting out 100% for the RPM. All charging systems that use stators & shunt regs work this way (unless the harness is knocking out one leg). http://faq.ninja250.org/wiki/How_does_the_charging _system_work%3F | ||
| Jdugger |
> so...we can't move on Not when you suggest the regulator will blow up from a larger stator  The stator is at 100% because of the VR; it's not "putting out", it's being drawn from. The EET in the other thread clarified this topic nicely, IMHO. | ||
| Tpoppa |
This is getting mundane. I think you misunderstood that post. The VR shorts to ground so the stator is at 100% unless add'l resistance is introduced. Typically a VR will fail due to overheating. More excess power for a VR to dispose of to ground in form of heat can create a situation where a VR can fail. --08s & 09s use the same VR. --The 09 stator is rated for 20% more out put. Both operate at 100% (unless the harness upgrade knocks out 1 leg) --VRs fail more frequently on 09s I suggested that putting out more then 520w could cook a VR. Not exactly rocket science  If you would like to continue this mundane discussion, PM me or start another thread, preferably in the Backfire Board. | ||
| Avc8130 |
I don't think we have seen a plethora of VR failures on the 09s. The stators seem to be failing. Using the same VR is not necessarily an issue. If the VR is rated for the wattage everything should be fine. Are stators on backorder? ac | ||
| Jdugger |
> The VR shorts to ground so the stator is at 100% unless add'l resistance is introduced. > I suggested that putting out more then 520w could cook a VR. Not exactly rocket science I haven't measured it, but I'll be shocked (pardon the pun) if it's a SHORT. There's some resistance there, and that's surely part of the reason why the VR is in a metal case and heat-sinked with thermo-conductive paste to the aluminum sub frame! So, since it's not a dead short, I believe Ohm's law comes into play and there's not actually any more current flowing through the shunt, despite the rated capacity of the stator to provide current being higher. (and believe it or not, I'm not so much arguing and making sure I understand the concept correctly) | ||
| Blk09r |
Well add me to the list of failed VRs. I was getting a system voltage error and seeing voltages as high as 17 volts. The bike is still under warranty but I bought a mosfet regulator to replace the original. Hopefully this will reduce the load on the stator and solve that problem as well. My bike has had the harness upgrade since new and now has 1575 miles on it. I'll post some pictures and particulars when it's done. | ||
| Curve_carver |
Add mine to the list of failures. I'm so Hott right now. Stator isn't charging very well. I have 35 watt hid's and all updates and the light came on this morning. The bike was running without the fans on when the light came on. I had to turn my lights off to get home. I'm glad I put a switch on. I also tried running my stock 35 watt highs today and the voltage really dropped just with those on. That excludes the ballast draw theory I had at first. I changed the relay over to one I had laying around. Voltage seems to be back up again since the relay change. I'm not to familiar with relays idk if I had a NO or NC style in it . I just used one I had. There was no marking on the stock one. How are the rewind stators holding up? Can they be rewound for lower output do I don't fry my regulator? Please pm me with any good info. How does the relay function? Does it kick on after voltage drop? | ||
| Dirty_john |
Over here in the UK there are few reports as yet of fried stators but it can only be a matter of time, I'm going to see if I can get hold of a crashed 1125R for parts or maybe a 2008 stator. It took so long to get my Erik Buell Racing ECM through customs otherwise I would order one of their 2008 stators. | ||
| Jules |
John If you did go for a 2008 stator would you also need a 2008 rotor? I'd guess not (it's just a couple of magnets isn't it) but I'd be interested in your (or others) thoughts. I'm tempted to order one of the Erik Buell Racing 2008 stators to add to my growing stock of spare parts LOL | ||
| Sekalilgai |
..just to chum the waters....check out post #35 in this link http://www.apriliaforum.com/forums/showthread.php? t=138473&page=3 I believe you need both the stator and rotor from an 08 to do the swap.... http://www.badweatherbikers.com/cgibin/discus/show .cgi?tpc=290431&post=1859956#POST1859956 | ||
| Jules |
Cheers - I particularly enjoyed the Aprilia forum and the fact that they are also experiencingt he same issues - as are Honda according to their research. It's nice to know we're not alone LOL | ||
| Kicka666 |
I got mine rewound from Burt @ small coil rewinds in Geelong Victoria Australia. Removed the bandaid harness fixup, charging @mid 13's all the time. Still have my original stator thanks to my local for giving me a burnt out 1 for testing... | ||
| Avc8130 |
09 Stators are backordered until 8/12 as of now :-( ac | ||
| Curve_carver |
Relay fixed my issue. It drops to 12.5 then bounces up again. Wheew !! | ||
| Avc8130 |
I wonder if my dealer checked the relay. It doesn't really matter. I checked the stator and it is shot. ac | ||
| Curve_carver |
My stator looked burnt at 2500 miles . 8 legs brown 4 were white. All miles with harness. | ||
| Fresnobuell |
Just got the harness installed and it looks like its doing the job. Pre-harness battery voltage per the IC 13.8-13.9 volts typically at 5K RPM. Post harness at the same 5K RPM 13.3-13.4 volts. I am assuming the difference in Volts is the 3rd leg of stator is being cutout. What RPM or condition(s) allows the 3rd leg to activate? | ||
| Fresnobuell |
Hmmm...I am starting to wonder as the battery light is now appearing occasionally. Signs of trouble to come? Can anyone definitively state what a properly installed harness will do in detail (ie, conditions in which the stator is neutered and alternativley when it's allowed to produce full output)? | ||
| Ezblast |
That harness will screw you in the twisties where your rpms will vary quickly, leaving no time to recharge system. EZ | ||
| Ezblast |
Hitting the dealership today - looks like the best recommendation is to switch over to the 08 Stator/Rotor - wish me luck! EZ | ||
| Ezblast |
They are good folks at Devil Mtn HD - took it in for a looksy due to the loss of charge last weekend, and asked if it is the Stator, could they throw by the idea of replacing it with the 2008 stator and rotor, and ditch the harness? They said they would throw that by them if the stator tested bad. One can hope, but I really don't expect HD to do the right thing, so an extended warranty would pay for itself by the second stator - and when all is said and done, I'll put in an 08 system at the warranty's end - easy deal. EZ | ||
| Captain_america |
I haven't read the past couple pages of essays here but here it goes: My voltage Directly corresponds with engine temp. A hot engine >190 really doesn't charge well regardless of rpm. I can rev the hell out of my bike in low gear, but if the bike is hot, its not gonna charge. Plain and simple. The ecu must determine whether or not to have the 3rd leg on based on CT. If my CT is in <185 it will charge at 13+ volts all day long at 3k. And... even though at a higher rpm the load on the motor is less and vacuum is high and fuel delivery is low; the CT will run hotter than if at the same speed you clicked up two or three gears, let the CT come down then you'd be charging again... This is most noticeable with my high beams on (which I prefer on 100% of the time). On another note::: I dunno how advanced the ECU in this bike is but; Does it compensate fuel delivery based battery voltage? the difference in fuel delivery out of a pump and an injector is quite significant with only one volt change. The voltage of my bike goes all over the Effing place because I run my high beam almost all the time. This would have to effect the outcome of a dyno... Has anyone looked into this? Example:  Sorry if this has already been discussed... | ||
| Dannybuell |
Captain_america - You just raised the bar again. Your heat arguments are new. IDK anything so if it sounds a bit off course it may very well be. :-) Heat and the high beams will disrupt fuel flow because as voltage drops from 13.5 to 12.0 volts the GPH will drop 12% to leave the fuel system with about 88% of it's potential. That is assuming a 1125 fuel pressure is 110psi or less? Does anyone know what the 1125 fuel system PSI ranges are? THX |
