"sfb" wrote in message
. ..
#1 Are there names for the 1 wheel forward 2 back and 2 forward 1 back
configurations?

Delta and tadpole respectively, IIRC

#1 What are the advantages and disadvantages of the two configurations?

There are tradeoffs in the complexity of drive and steering. There probably
are other differences as well. I hope this thread doesn't get hijacked and
that more knowledgeable people contribute to it.