[ultrasp99]

I haven't had this much fun since I started flying 18 years ago...

www.members.aol.com/rcisfun4u/steve_hi.wmv

 

[steener]

ive got one and love it also. the only prolem i have is i broke the elev. push rod twice so now im gonna get a metal push rod. otherwise ive beaten mine quite hard and the repairs are always minimal. tape and skewers.

 

[steener]

i just realized your link is a video. nice flying.
where do you have your cg?

 

[Wind Junkie]

ive got one and love it also. the only prolem i have is i broke the elev. push rod twice so now im gonna get a metal push rod. otherwise ive beaten mine quite hard and the repairs are always minimal. tape and skewers.

Steener,

Are you using a nyrod for the elevator push rod? We supply a nyrod in the deluxe kits. It's difficult to imagine the nyrod breaking, but I'd like to know what you have.

thx,
Joe

 

[steener]

yup. nyrods. not sure if the flutter caused the break the second tiime or the break was caused from flutter. the first time i pulled into a wall and lost all elev. when i got her down(didnt take long) the elev. push rod was broke right at the end of the linkage. its happened twice which is enough for me to go to a metal push rod. i dont think that that small wieght addition will effect the 4d much. ill see. btw, am i the first with this problem Joe? ive landed pretty hard (unless that stressed the nyrod) and never had any linkage failures. your help will be greatly appreciated.

 

[Wind Junkie]

You're the first one I've ever heard this happening to.

Did you use pliers to screw the threaded rod into the nyrod? Did the nyrod split maybe where the pliers gripped it?

I'm going to forward this info to Mark, who is the mechanical genius behind TufFlight. I've had countless combat gremlin type wings destroyed into confetti in my early days of combat, with pieces raining down like helicopters with elevons dangling by their nyrods, but the nyrods never broke! The servo arms usually broke first!

The air loads on the elevator and tail really aren't that much to cause a flexible plastic push rod to fail in either tension or compression. There must be a fault in the installation technique -- something you are doing differently than we do. We'll get to the botttom of this.

Please PM me with your phone # and we'll get in touch with you if that's ok.

thanks,
[email protected]