As the title says I took a m447 prop and cut it down to a 46mm, made some cupping pliers and cuped the prop and bent the tips just alittle, this with sharpening balance and thined the heck out of it,
well I feel my efforts paid off because with a stock m445 I hit may be 48.8 mph and with the modded m447 I hit 56.8 still need to do more testing w/ strut height it should go a bit faster. don't ask me what the pitch is or anything to technacal about the sizing because I have no clue what the pitch is know,I just know that it worked well and the ul-1 jumped on plane without hessation.
I will continue to try my hand in prop mods. test,test,test,