Stuka Stunt Control Line Forum
Archive, 2000–2021 · recovered from the Internet Archive
Forums › Stuka Stunt Main Forum

U-KEY Bell crank Failure

Stuka Stunt Main Forum · 5 of 5 known posts recovered

SRiese5283 · Jun 27, 2004 10:50 PM

#0 source
Flying with one of my Students yesterday he had an amazing first flight.
About half way through doing a wing over the plane made a right turn, looped went overhead, came back down, went 90 degrees to the right and went across the fence, over the freeway exit and hit the dike about 250’ away. Said to myself the “lines broke”. HOWEVER, looking at the pieces of the destroyed plane BOTH EARS of the Brodak Bell Crank were snapped in the same place. Both about 3/8” from the end. Now taking a close look you could see the FLAW in the Bell Crank at the break. One arm had an air pocket. There was no material about half was gone.

SO I have a QUESTION. What Material it the Brodak Bell Crank? Would UV Rays attack this material? Would Fuel attack it also? Since this Bell Crank is exposed I have an ISSUE.

End of story. ART my student E-Mailed the new U-KEY GUY and a NEW PLANE is on its way! FREE. I keep saying the best people are control line people that make it right.

Scott

Scott Riese

peabody · Jun 28, 2004 06:26 AM

#1 source
Sott....
I would send the bellcrank that broke to John....I am sure that he would be interested.


See Ya

Peabody

SRiese5283 · Jun 28, 2004 11:39 AM

#2 source
It will make the rounds to all involved.

Scott Riese

wright45 · Jun 28, 2004 02:42 PM

#3 source
I had one of that type break while I was flexing it in my hand. It was old and "dry". If that's the right word for old nylon. I've never used one again.

John Wright

jfitzgerald · Jun 29, 2004 07:02 AM

#4 source
My OLD U-Key has a metal bell crank.

John Fitzgerald