Hi there Addis, if I understand your question correctly, you're asking what direction do the propellers turn on a triple engine set up, correct?
If so, on average, the center and starboard engines turn clockwise while the port engine turns counter clockwise as you would be able to see in the two photos linked below as examples.
Thanks for letting me know. I uploaded the two photos on to photobucket.com and edited my post above. The photos of a triple engine set up with propellers installed should be more accessible now.
