BD-4 Mailing List

The mailing list is a forum where we builders and those interested have discussions about the BD-4. You need to suscribe to be able to receive messages that are sent from other suscribers. Expect to receive around one to five emails a day. Of course, you can also send messages to the group, but you need to suscribe first. You can check the mailing list archives (see below) first to see what we talk about.

For instructions to suscribe or unsuscribe please go to

and follow the instructions there.

Here is a frequently asked question:

Q: I have a new email address, how do I change it for this mailing list?
A: Go to There, fill your OLD email address in the last field there and press the button next to it (or press RETURN). Then log in with your password. The next page has a field for a new email address.


The archive is at (started February 20, 2007).


The old BD-4 mailing list was hosted by Northwest Aero. This site is no longer active. Here are links to the earlier archive. Please note that the indexes for the 2000-2007 archive are around 2 Mbytes each. If you have a slow connection, it will take a minute or two to download each index. Once you have downloaded one of the indexes, open any selected message in a new tab or window so that you can go directly back to the index.
Some of the dates were not formatted correclty in the original messages, so are not indexed correctly here. The archive did NOT start in 1904. :)

bd-4 mailing lsit archive 2000-2007
bd-4 mailing list archive 1998-2000 not yet restored