Originally Posted by electricrc68
Okay i got some pics...i really think i messed up in the construction part. I mean i am awesome at the design, but then when it comes to building it, i tend to measure things wrong and i can NEVER for the life of me keep that knife going straight.
Based on seeing where your 2200mah battery is located and your motor being all the way up in front it looks to me like it might be nose heavy .
Go ahead and put the motor back so it comes straight off the nose - no up or down thrust . Then put some more velcro along the bottom edge of the fuselage behind the battery so you can adjust the battery position , and then try setting your CG on top of two chair backs like I did in the photos . Next , if possible take it someplace where there is tall grass or weeds and glide test it ( with everything turned on so you have rudder and elevator function - but NO THROTTLE ) . If it still wants to nose down , move the battery back A LITTLE at a time until it glides nicely . Once it glides well , then try to fly it with power .