What engine would you recommend for a CG Ultimate?
My Ultimate is nine years old, and I have an ASP 108 in it, with a Slimline Pitts style muffler, 10% fuel, and I use a 14x10 APC prop. With this set-up, it is a nice flying airplane with scale like performance. A buddy has one with a 108 OS, and we propped it with a 15x8 to slow it down a little for him.
I think the Magnum 108 would be an excellent choice. It is a "nicer" version of the ASP I believe.
My Ultimate weighs in at 9 3/4 lb on honest scales.
Clair