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General control line discussion => Open Forum => Topic started by: Steve Agrella on August 16, 2011, 07:08:20 AM

Title: Removing plastic hinges (anyone know how)
Post by: Steve Agrella on August 16, 2011, 07:08:20 AM
Anyone know how to remove plastic hinges thaty have ben CA'd in, I can probably put new ones in next to the old ones however I would like to get the old ones out.
I have a plane that I purchased that covering came off so I need to completely recover it, I had to cut the flap hinges to remove the flaps.

Steve
Title: Re: Removing plastic hinges (anyone know how)
Post by: john e. holliday on August 16, 2011, 08:27:42 AM
If you are talking about the pin type hinges DuBro makes,  I tried once to replace one that broke.   Wound up doing a figure 8 hinge with dacron line.   Now I use Kevlar line. H^^
Title: Re: Removing plastic hinges (anyone know how)
Post by: Neville Legg on August 16, 2011, 09:58:08 AM
Just cut it off flush, and put a new one next to it!

Cheers
Title: Re: Removing plastic hinges (anyone know how)
Post by: Steve Helmick on August 16, 2011, 10:02:27 AM
For CA, heat or "debonder" (nitro methane).  For epoxy, heat. A monkeykote iron should work, if you have one, or a heat gun. I'd start with the iron, maybe, but only if the debonder doesn't get it.   H^^ Steve
Title: Re: Removing plastic hinges (anyone know how)
Post by: BBury on August 16, 2011, 11:03:52 AM
..If all else fails you can cut around the hinge and glue a fresh 1/8 or 3/16 block back in it's place then make a new clean slot.
Title: Re: Removing plastic hinges (anyone know how)
Post by: W.D. Roland on August 16, 2011, 12:52:43 PM
I have recovered around the hinges by notching covering at hing location and then pulling covering through gap for some over lap. Accurate cutting is key and then position and hold with tape while attaching covering.

Have cut hinges in 2 with razor saw and then worked knife bade along top and bottom of hing
usually with damage to structure.

Hinges are a pain it the rear..... ???

David
Title: Re: Removing plastic hinges (anyone know how)
Post by: Steve Agrella on August 16, 2011, 01:56:50 PM
Thanks so much for the replies

Steve
Title: Re: Removing plastic hinges (anyone know how)
Post by: Wynn Robins on August 16, 2011, 06:15:57 PM
cut the barrell off flush with the TE (of wing) and LE of flap/elevator.  slide razor blade in on top and bottom of the hinge to cut the glue joint - pull the tab out using a sharp point on something - you kind have to "poick at it" until you can get poking out a bit - grab with pliers and pull......

Title: Re: Removing plastic hinges (anyone know how)
Post by: Will Hinton on August 16, 2011, 07:23:48 PM
I do like Dave Rowland does, do the bottom first and it will turn out fine. 'Course, it's a little late for this ship you're doing now.