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Building Tips and technical articles. => Building techniques => Topic started by: Leester on September 30, 2006, 04:07:43 PM

Title: Removeable flaps
Post by: Leester on September 30, 2006, 04:07:43 PM

At one of our Mt. Joy flying sessions Crist R. showed me how he uses 1 pc of .025??  wire to connect the hinges on each wing panel. I forget how this was secured to the wing and is the horn wire then held in only by the horn bearing? and the hinges being connected?? Removeable flaps is something I haven't done but want to do with my planes from now on.   Thanks

Title: Re: Removeable flaps
Post by: Crist Rigotti on September 30, 2006, 06:02:08 PM

Lee,
The flap or elevator horn is held in place using a brass tube and glued into the fuselage.  the flpas or elevator has a brass tube to accept the horn wire.  Use Klett hinges and .025 wire.  Bend the end of the wire 90 degrees and use a SIG 1/32 eyelet in the TE.  Insert the 90 degree bend into the eyelet to secure the wire.

Title: Re: Removeable flaps
Post by: Leester on September 30, 2006, 06:12:46 PM

Thanks Crist, I was missing the tube in the fusalage part. It all makes sense now.

Title: Re: Removeable flaps
Post by: Ralph Wenzel (d) on September 30, 2006, 06:16:32 PM

Hi Crist, et al.,

And this method, using Klett hinges, will no longer be an option when current stocks are used up. I called the Klett Plastics factory in Ft. Worth on Thursday, Sept. 28, , and got the following (somewhat paraphrased) message, "Thank you for calling. Due to the death of the owner, Klett Plastics has closed its doors, and will no longer be taking orders".

I had called to order a bunch, as the Klett's were the only nylon hinge I've ever used successfully. I suppose I could cut the head off the pin of a DuBro hinge . . .

Title: Re: Removeable flaps
Post by: Leester on October 01, 2006, 11:14:21 AM

I did forget one thing, how do you recess the hinges?? or don't you.

Title: Re: Removeable flaps
Post by: Crist Rigotti on October 01, 2006, 01:00:10 PM

See the thread on hinge pockets.

Title: Re: Removeable flaps
Post by: Leester on October 01, 2006, 01:51:27 PM

Crist: I know how to recess the hinges but with the wire going the full length of the flap or elevator how does the wire pass through the wood between the hinges???

Title: Re: Removeable flaps
Post by: Crist Rigotti on October 01, 2006, 02:30:53 PM

It doesn't.  It stays in between the TE of the wing and the LE of the flap.

Title: Re: Removeable flaps
Post by: Crist Rigotti on October 01, 2006, 02:40:25 PM

Here's a picture of my Harbinger at the wing tip.  You canb see the eyelet, hinge pockets and the hinge wire.

Title: Re: Removeable flaps
Post by: Leester on October 01, 2006, 02:48:40 PM

Thanks Crist much appreciated.

Title: Re: Removeable flaps
Post by: Glen Wearden on October 01, 2006, 06:43:25 PM

It appears that this method leaves quite a gap along the hinge line.  Do you seal it with tape, or does the pin itself close the gap enough to suffice?     Glen

Title: Re: Removeable flaps
Post by: Crist Rigotti on October 01, 2006, 07:40:02 PM

I always seal all my surfaces with sealing tape.

Title: Re: Removeable flaps
Post by: RC Storick on October 01, 2006, 07:57:13 PM

Just ask me I know!  **)

Title: Re: Removeable flaps
Post by: Crist Rigotti on October 01, 2006, 09:00:29 PM

Bob knows that I seal all my hinge gaps, trust me.