Overheating voltage regulator B

Hi Eric,

I just noticed you had already referenced my earlier post regarding the 12-10 AWG pin not fitting the AF8 tool, sorry for the redundancy. But with the cost of the tool, it's probably worth saying twice ?.

Jeff and Eric Thanks. I really appreciate your efforts in which I can say --- After extensive research on this complex problem I have come to the super smart conclusion that only super smart people can figure out, "ROTAX undersized the connector for the amps and we need a simple  (more than likely) 12 gauge 3 wire connector with higher amp rating". Rocket science reveled to the common man. LOL.

Jeff Blakeslee wrote:

Hi Eric,

I just noticed you had already referenced my earlier post regarding the 12-10 AWG pin not fitting the AFT8 tool, sorry for the redundancy. But with the cost of the tool, it's probably worth saying twice ?.

Yes we are scattered but good ref.

Hi Paul,

The problem starts with clever wording from Rotax within the SI-912-i-024 document.  They don't really tell you why the upgraded connector was made available, whether or not they were having failures with the old connector, the amp rating of the old connector, or the amp rating of the new connector. While it's not a mandatory upgrade, they do state that:

1.3) Reason: In the course of further development and standardization, a new connector for rectifier regulator B has been introduced. The new connector allows higher current draw. 

I would ask, higher than what? Higher than before? Higher than you generally need? Apparently, they mean higher than the old connector, but don't say if the old connector is rated for the full load of the alternator.  Nothing in the document provides the information required to make an informed decision whether or not to complete this upgrade. I do think we can read between the lines... "Your original connector may fail, and here is the solution". 

Jeff, Thanks for your discussion about putting extra load on the B stator which seems to be a weak link in the system. That’s valuable operational info!