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Flap return wire
http://thorp18.com/thorpforum/viewtopic.php?f=3&t=8198		 Page 1 of 2
Author:  Jeff J [ Fri Feb 23, 2018 8:51 am ]
Post subject:  Flap return wire
I was replacing the flap springs last night and noticed the wires (pn 631-2), especially the right one, are getting corroded and pitted. I don’t think I would like to have only one flap deploy so I am thinking it’s time for new. The drawing calls for .09 hard steel wire. Are people using hinge pin to make these?

Thanks
Author:  fytrplt [ Fri Feb 23, 2018 10:12 am ]
Post subject:  Re: Flap return wire
Local hobby shop might have what you need.
Author:  Jeff J [ Fri Feb 23, 2018 10:43 am ]
Post subject:  Re: Flap return wire
I don’t have a local hobby shop unless you count a 2 hour drive as local. I do have about 6 feet of piano hinge with the hinge pin. If I need something else I can call Spruce and have them add it to the order I placed last night.
Author:  Bill Williams [ Fri Feb 23, 2018 11:10 am ]
Post subject:  Re: Flap return wire
The local ACE Hardware carries several sizes of piano wire,maybe try them
Author:  Rich Brazell [ Fri Feb 23, 2018 2:32 pm ]
Post subject:  Re: Flap return wire
Try Cubes . Thorp Central probably has them ready made . I got mine from Classic Sport which is now Thorp Central . ;)

RB O0
Author:  Jeff J [ Fri Feb 23, 2018 5:23 pm ]
Post subject:  Re: Flap return wire
Thorp Central is a valuable resource to be sure but I have been having some problems matching their stock to a 44 year old hand built aircraft of a different model. In some cases it has been deviations from the drawings in others it has been differences between the models. What I am looking at today is a deviation for sure. I haven’t checked the S-18 drawings yet to see if there is a difference.
Author:  TonyNZ [ Fri Feb 23, 2018 5:36 pm ]
Post subject:  Re: Flap return wire
A bit of copper coated welding rod 1/8" works well.

Tony Schischka
T18C
ZK-VMS
Author:  TonyNZ [ Fri Feb 23, 2018 5:38 pm ]
Post subject:  Re: Flap return wire
Ops, I used that as the link between the spring and the flap, not the spring!
Tony
Author:  Jeff J [ Fri Feb 23, 2018 8:52 pm ]
Post subject:  Re: Flap return wire
I just went ahead and used the hinge pin. It’s fairly strong and there isn’t a lot of pressure on it even when the flaps are full down. If I auger it in with one flap extended then we will know I was wrong.
Author:  Rich Brazell [ Fri Feb 23, 2018 9:27 pm ]
Post subject:  Re: Flap return wire
I am always right at least 50% of the time ! :P

RB O0
Author:  1albee [ Sat Feb 24, 2018 12:33 am ]
Post subject:  Re: Flap return wire
RB does that make you left the rest of the time ???
Phil
118BC
Author:  Jeff J [ Sat Feb 24, 2018 3:31 pm ]
Post subject:  Re: Flap return wire
I am surprised no one called me out on my comment about only one flap deploying.
Author:  Rich Brazell [ Sat Feb 24, 2018 4:09 pm ]
Post subject:  Re: Flap return wire
Nothing gets past me ! You wouldn't be the first T-18 to have split flaps on landing . ??? I can think of one S-18 ( not mine ) that pulled it off . :P

RB O0
Author:  Bill Williams [ Sat Feb 24, 2018 4:18 pm ]
Post subject:  Re: Flap return wire
I don't think it would happen. I had my right flap stick down after retracting the flaps , on takeoff I would hear a "thump" and it was the flap coming up due to the airflow The airflow over the wing would keep the flaps up. I would think you would be in deep DODO if you had them extended and a cable broken letting one flap retract
Author:  James Grahn [ Sat Feb 24, 2018 9:36 pm ]
Post subject:  Re: Flap return wire
You could eliminate that connector. I have springs that are unfinished on one end. They are about 14" long. Just bend as desired.
Cubes
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