Yes/No?

[dhal22]

The core is balsa?

 

[TonyHallo]

I don't think so, but who knows?

 

[AKNick]

It's a high density foam core which is also used in full scale I'm pretty sure.

 

[Xpress]

Falcon props use a foam and balsa core to prevent howling at high RPM. I would just re-drill and use, I've seen some swiss cheese prop hubs before that work fine.

 

[dhal22]

Thank you, I will use the prop someday. I've acquired 2 used ands 1 new since then.