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Prop Selection vs CG limitations

Freemasm

Well Known Member
I realize it is a complex question with a ton of variables and unknowns. I think I've settled on engine choice, though the straight valve 360-ish options don't vary significantly in weight. In short, building an F4 with:

Standard RV4 wings
Standard RV4 tail (lightest option)
Will be using light weight batteries at firewall

If not for potential CG limitations, I'd settle on a three blade Whirlwind prop. Their light weight, compared to others, is the reasoning behind this open ended question.

From the completed builds, would you mind sharing any CG limitations, specifically back pax and baggage area that you've experienced. I realize all builds are different but any collective experience you could share would be appreciated.

Scott F
 
Last edited:
Following! Looking to install an IO-360, forward facing injection paired to a 3 blade MT on an RV-4.
 
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