Bueller....Bueller....Bueller.....!!!

 

Life moves pretty fast. If you don’t stop and look around once in a while, you could miss it.

https://www.r1200gs.info/posts/355875/

 

Had no idea what you were talking about so looked it up. They don't list anything for the 1200 GS but show one for the 1250 is "coming"

 

I believe I may have found a WINNER!!

RMSTATOR in Quebec Canada sells a series type rectifier and stators for various products.
Most are for snowmobiles and atv's but they fit many motorcycles. Mine included:

All

Shop the largest catalog of electrical parts. More than 50,000 ATV, UTV, Motorcycle, Snowmobile, PWC, Marine applications. Friction-free shopping: 2-year warranty, 2-day shipping and expert staff to support our products.

www.rmstator.com

This series rectifier is same size as OEM BMW shunt rectifier so it should be a plug and play with no splicing or extending of wires.

Ordered one and will update when it arrives and is installed.

 

But I'd want more info on their specification: Minimum Charging Voltage: 14.5 V +- 0.5 V.

So 14.0 to 15.0V, but under what conditions? I'd like to see a graph of the charge voltage vs ambient temperature.

Presently, my 2016 R1200 GSA charges at 14.2V which is low for an AGM battery at the temperature I am riding in.

 

14.2-14.3 is the voltage I have been seeing/hearing about pretty consistently being reported by most LC 1200/1250 owners, so that certainly isn't low by any means for any battery that is installed.

 

Not sure but I remember reading that installations required an adapter plate if you were picky.

In any case, this is what I came across for a dimensional drawing...

 

Kind of surprised that RMStator could not get back to me with any data.

I asked for Voltage vs Temperature plot and if they designed the system, they would have that.

For the AGM battery that comes factory fitted in the R1200 GSA LC, I would hope it is closer to the values in the following chart.