Well done! The shaft of your deflection lever is missing precision. The swashplate linkage must be accurate and precise. You should use ball bearings on all printed levers. Shim them with accuracy.
If that was anywhere close to full throttle then I would suggest you need to change the gear ratios. A 450 size helicopter needs to run about 1600rpm just to lift and about 1900 to be controllable. By the sound I'd say you are at about 800 to 1000. Good luck with it.
what’s diy? it looks like an align motor. align rotor head assembly align shaft, custom holder? for lack of a better word, it even has the old align servo links as old flybar nitro
From an airworthy perspective I have serious concerns, you’ve over complicated what by now are very reliable and simple systems and introduced thousands of failure points by doing so, your airframe also seems to be very heavy and you main blades too small for that size Heli - have you considered C of G and weight and balance? Your mast and head are very high which will invite severe roll over tendencies - my advice would be to look at modern RC Helis and replicate their simple systems then apply your intricate scale fuselage over that
the one question i had regarding the whole build...you did not show...the measurement of the servo to swash linkages..be nice to get them close.. so ya dont have to make huge adjustments...mayb a turn er two in or out and ur golden
