RE: FROG 149 Vibramatic
I always seriously wanted one of them when I was much younger. Part of the problem with diesels in the US was that they were generally considered 'dogs' in a time of really increasing performance levels of glow engines. Free flight scale liked them though. The Oliver and Rivers ETA et all came too late to reverse the perseption. Oh and the FROG 2.49 was one of my true favorites back then. Never broke a shaft on it. That the diesel is even considered in this country at all is in no small part due to Bob Davis who did most of the work re introducing modellers to the benefits of the diesel.
Dennis