Using one ide cable for 2 writers (duplicator)

Just wondering if this has been tried before.
Has anyone tried to run 2 writers using one ide cable from one port in their duplicator. (Acard)
Thats it Thanks for looking.

I tried it once with two writers on the secondary ide cable and was only able to sustain a burn speed of 16x with my liteons. Any higher than that and i got buffer underuns a lot

Forgot to say matey, it is a dvd duplicator sorry.
I now have my 1-3 running 1-4, i have put one writer on the cable with the reader which meant i could use the three other ports on the controller for the original three writers thus making it 1-4 and it works nicely.