Can I use an Aeroplane Propeller on my 7.5CC DF engine?

[agalinko]

hello, I have a pair of 7.5 cc Front Rotor pumped ducted fan engines. Both are new. I want to use then on a twin engine project but I want to know if I can use an airplane propeller instead of a ducted fan unit?
If so what sizes are recommended??? 10x6 etc
Also the engines came with a second aluminum spacer with hatch marks on 1 side. There are no instructions on how to mount a propeller using this extra spacer. Any Idea?

thank you
Alan

[MECOA]

Yes you can use a regular prop on it I would start with a 10x7

[agalinko]

great thank you.
1) What is the additional aluminum adaptor for? It looks like it would space the prop further away from the carb? OR do I turn the spacer around and sandwich the prop for extra security?

thanks Alan