norvel engines
Im currently building an A-10 warthog twin ducted fan.it is fron rc modeler plans.It has 54 1/2 inch wingspan flat bottom airfoil ,the fuselage is 45 inches,it called for tee dee .020 engines with cut down 5x3 props.i have added a little extra weight it now weight dry and no electronics a tad over 2 lbs.so i have opted for a pair of norvel .061 engines rc. i have recently bought 2 new norvell .061 engines with carbs. my question or questions are will the 2 .061 engines with 5x3 cut props pull it?are there any differences in the .061s,power wise i need to watch for?ie porting?the reason i ask is because someone told me that some norvel engines have 3 ports plus exhaust and some have 5 ports plus exhaust,is this true? this is the first twin ive ever built and it is from plans so if you dont mind i could use the help.also does anyone know what i could use for the ducts for the engines,the plans stated to use 2 liter pop bottles cut down.is there anything better?