Hi
> I believe that it takes about 25 to 30 minutes to transfer a 880K adf.
Even with a slow 19200 baud connection (that is always possible) it doesn't needs longer than 7,5 minutes to transfer a single disk.
The main problem is to get the Transdisk or Transwarp software to the Amiga. Fortunately it must work to copy the "Transwarp" file to the Amiga using a simple terminal software at the PC and on the Amiga-side you should enter "copy SER: to RAM:Transwarp" into the CLI to write the file to the RAM-disk.
This should work (it works using two Amigas). Take care that the PC and the Amiga use the same settings for the serial-port (e.g. 19200baud, 8n1, XON/XOFF).
Noster