I did some investigating on one or two of the the web's interactive tuning/chord sites but will report if i find anything else that's interesting, one interactive thingy here for Ukes, Mandolins and Banjos could be useful...
"All chords are calculated and therefore may not be really playable!"
and Alan's open D chart ...
and a tuning guide for Banjos with sound bites..._
For starters here's a GDGB chart i found on the Handmade Music Clubhouse submitted by Billy Freedom, lots here to try out!
...and a link to a new 4 string chord chart by Greasestains...
Some different tunings to try, i found these jotted down on scraps of paper while i was tidying up my desk!
A+, E+,A,b (used this tuning on "Mo Shuffle" and "Worst Enemy" - lefty b+ A E+ A+)
This chord chart for GDGd just came up on the Nation from Glenn Reither, it is a PDF file ...
DADF#. suggested by Greasestains (-:
i was just gonna try and share my group here! glad you found it Slowpaw, hope some folks get some use outta it! i hope to gett back working at it by the 3rd.
i love this tuning tune the B down to B flat (Dgb flat d) i think its Gm heres a song i did in this tuning http://www.cigarboxnation.com/video/cigar-box-guitargoing-down-to