thanks for the replies, i thought the lines would be 1/2 of what you guys are suggesting, lucky i asked or i might of ended up very dizzy. the motor is a standard cox 049 with the spring starter ( it came of a kyosho cessna foam plane from the 80s) i have run the motor up in the mustang and it has better than 1 :1 thrust. i was thinking i could use some braided fishing line as i have some 14lb on a reel. again thanks for your replies. regards Greg
i will post results of the maiden soon.