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Originally Posted by flydjd2
Hi from Germany (and the UK) I am building a 7A here in N Germany and am planning to fit a IO 320 (probably Aerosport) with FP Sensenich FP.....320 due v high price of avgas in Europe....
(RV 7's not cleared for aeros yet in Germany or UK)
Any general advice plse...thks
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I think your base line choices are great.
I'm a big fan of C/S props and have one on my RV7, but the Sensenich is a great prop and cost vs. performance is excellent. One of the advantages of the C/S prop comes in when doing acro, but it sounds like you will not be doing any? By the way how do they know if you do acro or not?
Guess some might argue about engine size vs. fuel economy. I know the RV-7/A is tail heavy, in other words saving lots of weight on the noise is not all good. Do the weight and balance and you will see what I mean. Since the (I)O320 and (I)O360 is about the same cost I would go for more power. The main factor in fuel economy is the throttle hand of the pilot.
If you want best fuel economy you want fuel injection, probably c/s prop and dual electronic ignition. Again 320/360 is up to you but I like the extra power for a little extra weight. However when I say best econ we are talking a few % not huge difference in carb, fixed pitch and magnetos. Although to me electronic ignition is a no brainier option. George