One of my favorite Acrobatic Biplanes is the Christen Eagle, I first got to see the eagle in action with the eagles acrobatic flight team consisting of Tom Poberezny, Charlie Hillard & Gene Soucy in the early 90’s at Oshkosh.
The Eagle was designed to compete with the Legendary Pitts Special in the late 70’s
Wikipedia:
https://en.wikipedia.org/wiki/Aviat_Eagle_II
For those interested in a Kit or Plans:
Aviat, Inc.
Box 1240
672 S. Washington
Afton, WY 83111
Telephone: 307-886-3151
Fax: 307-886-9674
Website: http://www.aviataircraft.com
EAA Resources:
https://www.eaa.org/eaa/aircraft-building/kits-and-plans/00—c/christen-eagle
RC aircraft on Outerzone:
50″ Span, 1980 Publication date, .40 – .60 glow power
https://outerzone.co.uk/plan_details.asp?ID=4560
62″ Span,