In Dublin a company operates Ribcrafts as passenger carring ribs, out into the bay for trips etc.They all run diesel outdrives , they are constantly replacing Bravo outrive units, constantly, we see some ribs with Yamaha hydra drive units, I dont hear any problems about them, these are virtually the only outdrives fitted by Redbay boats for example.I only know of one other boat apart from Jwalkers that run Volvo, In Ireland Volvo parts are very expensive, I never like the idea of a rubber bellows which if perished can lead to water flooding the engine bay, I also know it works and must be replaced or inspected periodically, I often wonder why Volvos arnt popular in Ireland, on Ribs, again I think mostly due to cost, spares etc.
I have heard nothing but positve feedback about Yamahas, I know you can do the searches and read how many were used by Alan Priddy, going around the world .Even with transom showers fitted, Bravos are failing, it gives me no confidence in them atall.With outdrives you can never trim them fully out, with boats on a mooring etc, this obviously causes more maintaince issues, anodes, as I mentioned bellows perishing, growth and weed fouling etc.
Diesel units are more expensive to start off with, if you get the hours up, it becomes viable to run diesel, and it may be an economical choice for the user.However with the problems we constantly see with Bravos, I would never fit one, I would also have to say I would have a lot more confidence in Volvo, but they are expensive units to buy.
I have always been impressed by Yamaha, motorcycles, outboards, and I like the Hydra drive concept.
I definately feel they recieve the best reviews, there has to be good reason for this, its the only outdrive I would fit, and if Volvo are a serious market leader, why arnt they on more ribs.