My name is Erik, I'm 45 and I come from Friedrichshafen on Lake Constance.
Got my driver's license last year and got an old LC4 640.
After it wasn't that great anymore (the dealer had to take it back) I got the new Smcr 690.
So far so good. But something old had to be found.
Looked at a lot, seen a lot of junk, then accidentally discovered a Rc 03 in the further neighborhood.
Dangered, horny, bought. Then the brain was quiet for the time being
and then they started solving the problems ...
In short, the battery is not charging. Changed so far:
Battery, rotor replica with 5 ohms, original new regulator
I've gone through a lot of lists and read a lot of posts in this forum, but I'm now at a point where I can't get any further and would swap other parts on suspicion.
Facts:
Battery is 12.5V
Charging voltage at 3000 min-1 without light: 12.6V
Measured on the closed plug at 3000rpm: excitation voltage 10.3V, stator AC 10.5V all identical.
All stator phases against each other have 0.5 ohms and no short to ground.
Next test:
Plug on controller removed, exciter cable reconnected to controller.
AC voltage measured at the open plug, at 3000, 20V, all identical.
Then the exciter cable is unplugged and connected directly to the 12.4V battery. AC measured again, also 20V at 3000. All phases identical.
Old defective rotor with 1 ohm, reinstalled, again measured on the open plug, 30V at 3000.
Better, but also only 13 V charging voltage at 3000.
As I said, the new rotor has 5 ohms
and when I measure the resistance of: cable + carbon + rotor on the open plug (black / white cable), that is 6 ohms
so, the alternating voltage is bad. on the closed plug it should have 14-16V and open more than 50V
Where is the connection that the worse rotor with 1 ohm generates 30V at the stator and the new rotor only 20V per phase?
where is the catch now? Maybe someone has an idea?