threaded or non threaded propeller shaft

[strag]

resurrecting an aero marine 1/8 scale hydroplane. back in the 80s we used a flex shaft to a ferule to a needle bearing strut to a non threaded propeller shaft. the propeller was held on with a piece of fuel tubing no nut . can i use a threaded shaft. what is the best way

[fweasel]

Best to post of picture of what hardware you're using to better illustrate what it is you're trying to accomplish. I've seen fuel tube used as a spacer behind props, but never without a locknut.

[strag]

thanks for the reply. bottom set up is completed assembly. top is the parts not completed minus the strut