Has anyone tried mounting the RH rotating lower unit on the left side and the LH on the right for more stern lift? jim
Hi Jim My guess is that it will reduce the pulling power of the boat. I hear that the bigger engines are cavitating under load on multi engine dynes. If the boat isn't moving forwards much I'd think the stern lift effect would be worse. It would be interesting to hear a real world answer. Greg
Hi Greg, It is always nice to hear from you. How are you? Think of this issue in terms of the new member that is determined to put two 150 Optis on an 18. Pulling power is not an issue. but drivability is going to be a bigger issue than he can imagine. Even with a little extra stern lift the boat will try to swamp if he cuts it. My I/O 18 would take water over the aft deck if I chopped it. It would take water into the bilge blower intake which was on the deck. He will have about the same weight mounted a lot further aft. It won't be pretty. I have seen an 18 with twin V-6's that were the older lighter models. The driver was as good as I have ever seen and he did well with it in a show ski environment. The boat had very little freeboard and would not be fun for me. The reason I asked the question is that there is a lot of anecdotal information on the net about twin offshore boats reverse rotation. jim
We have tried all 3 locations on our triple rig. We've been told by factory techs that the left side is where you want to counter case for best pulling power, but I am not sure that really matters. Some clubs do it differently based on their site and which way they need to turn with a large number of skiers behind them. The counter on the left side keeps the boat more level for us. The bigger effect on stern lift was going to 4 blade props vs 3 blades.
