RE: Never saw this before:
Propnut
Good afternoon
What carb are you using in the Weedeater?
Do you have measured the static thrust ?
I have converted a Weedeater from weedwacker , it is 25 cc, run fine in the test stand, free exhaust and stock ignition.Enlarged stock carb to approx 3/8 with a file, do not touch the small holes in the bottom of venturi.I make an access to the only needle the carb have and can adjust it.
Have a delay with servo supplier, for my first big plane.
I am planning make a short curved pipe 5 or 6 inches for exhaust from electrical tubing , I have no problems with noise.
Thanks for your time
Jose
South America