12V 90A bosch alternator converted to 6 volts

It is wintertime in Finland and my carage is as cold as it is outside. (-6*C) I have never before started my old ford in this temperature. It is a miracle it started!
Anyway I'm testing a ford scorpio 90A alternator converted to 6 volts for old ford Taunus 20m. You can see how the voltage drops as I increase electrical load. But it seems to be working quite well.

[@taunusht]

Respect... Well done Man.
If you still want better charging you must change wire rounds inside alternator.
But this is enough if you keep your STW original (no rock machines etc.).

[@The6voltman]

That's why I bought the 90A alternator which has more efficient windings than the 45A I had.
No rock machines. Only a 6 volt mono radio and sometimes a tiny chinese mp3 "boombox" which has battery of it's own.
Thanks for the comments, Men! :)

[@Petrinkanava]

Komeeta :)