ULOT

Funny you should ask. Two years ago I prepared two Keosho ARF Me109,s for my teamate and I to race in the mini reno warbird pylon race venue. This ship is very close to yours in most regards and the plans did indeed call for an inverted layout. Because the event called for a rather stringent scale judging which accounted for half your score as well as the racing score we elected to go with an inverted mount to preserve scale outline. We used throttled Nelson Q-500 engines with the only exposed part being the tuned pipes along the belly and took a mild hit on scale points for this.

In this case I,d like to say they were a total success but was not to be. Because of the attendant problems all listed above and others we both had experianced failed heat starts a number of times in several different events.

In hindsight and I were going to use your airplane for sport flying I would go with the side saddle mount and a 'pitts' muffler. Using this type muffler and the cylinder head sticking out the right side will eliminate any thrustline problems and you will be able to go with a stock thrustline.

By the way I think you will enjoy the airplane. It is a delightfull flyer, easier to fly than many warbirds both the Spit and the 109 possess excellent ground handleing and T/O characteristics.



John