Originally Posted by npm108
Leapey I chased after a chatter problem when I had a Tohatsu 90 TLDI and changed the prop to a Solas Myth 3 Blade Alu. It would behave exactly as you described ...
Unless someone can convince me otherwise I'm happy it's simply unloaded/lightly loaded gear chatter (resonance) caused by the different mass of the Solas SS prop.
In cars, there's considerable time and money spent eliminating this gear chatter and it wasn't always successful. Mini A series idler gear rattle is infamous as was the manual gearbox Jaguar S Type. It's less common with modern dual mass flywheels.
I seriously doubt, given the number of different Solas props, that they've run and tested every variant for every engine and then fine tuned bush rates to attenuate it out.
Done over 100 miles now since fitting the Solas prop, over 20 at WOT. It's got no better and no worse and I don't forsee any long term problems as it's purely a light load or no load condition.