maxfliart's video: 18 Rubber-Powered Contra-Rotating Koolhoven FK-55 - Semi-Start to Finish

Two flights by the 18" rubber-powered Koolhoven FK-55 by Tom Hallman. The model has contra-rotating props via a Contra-Rotating Prop Drive unit (CRPD) designed by Keith Sterner, who can be contacted at fyteraces@rcn.com. Place "CRPD" in the subject line. A limited number of units are available. Model is loosely based on this 1937 plan & article from Model Airplane News: http://www.hallmanstudio.com/Koolhoven.plan.pdf Music: "Loveable" by www.bensound.com Flying Aces Club merchandise: https://www.cafepress.com/flyingacesclub Center of Gravity merchandise: https://www.cafepress.com/centergravity For more info on free-flight rubber-powered models, check these websites: http://www.easybuiltmodels.com/ http://www.volareproducts.com/BUY/ http://www.flyingacesclub.com Outerzone - https://outerzone.co.uk/index.asp National Free Flight Society - https://freeflight.org/ Mike Stuart's Flying Scale Models - http://www.ffscale.co.uk/