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Old 04-10-2016, 07:24 AM
ron ward
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Join Date: Dec 2010
Location: merrill, WI
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Default enough engine ?.

built a "Spadet" to reintroduce myself to r/c after not flying for quite some time. I used a Super Tiger .40 that was given to me and added about 7 inches to the wingspan. (from 64" to 71") by using full 3 ft wing panels instead of the 32" panels that the plans show.. this net a 7 inch increase in span after trimming and joining panels.
my question,..... do you think the ST.40 is enough power considering the plans show an OS.46 being used but they also state that the Spadet is for,.... ".40 size engines"..
then,... would it pay to use an 11-4 prop instead of a 10-5 or 6 on that .40 ?.
keep in mind that it s a trainer and I do want it to just put around at first. more engine, of course, can be easily installed later, but if I don't/won't need it, I don't have to spend the money for a bigger engine right away.
as always,....thanks for the replies.