Rene, I just reconditioned a counter rotating prop 150VMax.
Have not had the time to put it in the water yet but from what I'm told is fast.
The engine I bought from the UK damaged and in bits and brought it in Greece to repair it by Yamaha here.
From a close examination we found that it possibly had turned upsidedown in the water (the crank shaft had over reving marks on it) and the engine had taken water in but nothing major from what it transpired
The question now is how fast it will go and how much it actually consumes. Is it the same as the 200VMax? Can you give please us an idea on the consuption levels? Appreciate it
Yamaha here tells me at WOT about 1.8 ltrs/mile and cruising 1.3 ltrs/mile. But I recon is much too much.