| Author | Message | ||
     Coastrambler |
With my '09 stator currently keeping the bike close to home I got to wondering. Why did Buell go to a 3 phase setup? Are there physical differences that prevent using a 2 phase stator with the '09 rotor? I'm planning on getting a new or rebuilt stator, EBR modified rotor and a series voltage regulator. Will put VR in before having other parts installed. I'm good to do the VR, not up to others. I do take it out. Can go at least 20 miles on the battery. | ||
| Oldog |
Three phase is more efficient. to answer the question, | ||
| Terrys1980 |
The 3 phase stator Buell went to has a higher amperage rating which is what caused the heat issues. You will need the stator, rotor and cover to do the swap. | ||
| Dennis_c |
The 08 had a .3 phase less amps thoe | ||
| Coastrambler |
Well it won't be a new stator from HD, not at $690. WTF? Am still wondering why the change of systems. An increase of 0.3amps per phase is inconsequential. That's a 15Watt increase, max to the system. Am wondering if change was made by Rotax and Buell had to accept it. Also thinking it's Rotax that makes for the high price. Has anybody contacted Rotax directly to try and buy a stator? | ||
| Froggy |
The change in charging systems was a significant increase in power output. From the spec sheets, 2008 had "32-amp, permanent magnet, three-phase, solidstate regulator (432W @ 7000 rpm, 432W peak)", and 2009 had a "37-amp, permanent magnet, three-phase, solid-state regulator (500W @7000 rpm, 500W peak)". That is a 15.7% increase. Back when the 1125R first came out, there was issues of bikes not staying charged, which was due to multiple issues. The main culprit was a bug in the instrument cluster firmware which was causing excessive battery drain, another bug was the ECM not shutting down correctly. On top of that, many of the first 1125s were being ridden in the winter with large electrical loads from accessories like heated grips and attire. Buell was scrambling to come up with a fix, and part of the shotgun approach was to change the stator design to provide more output, especially at lower RPMs. The only issue was, which didn't show up in testing, was that the larger stator was not getting sufficient oil cooling when ridden at lower RPMs. The solution is to modify the rotor like how EBR does, to provide more oil cooling to the stator. | ||
| Brokengq |
The more cost efficient way of fixing the stator issue is to remove yours and send it to custom rewind or ricks and get it rewound. Takes longer, but is much cheaper. Plus making the modifications you mentioned before. The swap isn't difficult. |
