RE: Sullivan Vibration absorbing Engine mount
Hello; I hasve tried the Sullivan mounts. The "lord mount style" worked okay with an OS 40FP that I had in my Mid-star 40 then I used it with a K and B 40 in another Mid-star. It was satisfactory at the 40 size threshold, but I don't think I would want to use it with larger engines. Those little lord rubbers look pretty small to me for the amount of thrust they transmit. I have also tried the other Sullivan soft mounts that encircle the mounting lugs on the engine, they work great great too. I had it on my Enya 120 for years, no trouble at all. I also tried the Sullivan soft mounts where the engine bolts to a metal mount that is suspended by rubber bobbins on each end of the part the engine is bolted to. That one works great too although it makes for a long mount, it holds my Laser 100 in my Taube and works great.
Lately my LHS has down-sized and I can't find any of these Sullivan products locally, so I have been using the Dubro soft mounts just about exclusively. I like them, even though they are harder to find and are quite expensive. I think they help to protect the airframe from damage caused by vibration. After all just about every engine in the world is mounted in a vibration reduceing mount, our engines should be able to benefit from the soft mount.