Hi Rog!
As fas as I experienced there is no proplem in case of RC-motor, as it is equipped with the old 9V type connector, so you can turn round one of them.
This is the RC-motor: old 9V type connection, no integrated lead, white wheel hubs, weaker than a PF-motor:
http://www.bricklink...tem.asp?P=x1688
If you want to run your train with two PF-motor - like me - they are two solution, as I experienced:
- as L@go also wrote, you can use the PF polarity switch (simply, but it requires more space in your MOC)
- or simply just turn round one of the PF-motor itself (if you can solve the problem of "front" PF-cable/wire setting considering the curve > you have to spare some space above the RC-
Train Base for the PF-cable (because of swinging) during passing the curves)
As build in 8-wide, this is not impossible to do this trick..
This is the PF-motor: integrated PF-lead, orange wheel hubs, stronger:
http://www.bricklink...em.asp?P=x1688a
Keep trainin'!