Bungee cover wanted

[n6346m]

I'm looking for a bungee cover for my L2-B. It is the stramlined tubing type and I only need one. If you just have just the wood part I can take that too, my metal part is ok and I can put new fabric on. I just don't have the capability to form the wood part. E-mail me at [email protected] if you can help.

[Ragwing nut]

Re: Bungee cover wanted

I'm looking for a bungee cover for my L2-B. It is the stramlined tubing type and I only need one. If you just have just the wood part I can take that too, my metal part is ok and I can put new fabric on. I just don't have the capability to form the wood part. E-mail me at [email protected] if you can help.

sure you do, got a bath tub?

[n6346m]

Re: Bungee cover wanted

Ragwing,
That is a legitimate question for this neck of the woods, but yes I do have a tub. Don't I have to make a form to obtain the right shape? Does just folding the part give it the proper shape on its own?

sure you do, got a bath tub?

[Hank Jarrett]

Re: Bungee cover wanted

Might want to give us all a quick description of your form and process. I have heard a little ammonia in the water makes the wood form easier, but I don't know what it does to the glue in plywood. Anyone?
Hank

[Mark Julicher]

Re: Bungee cover wanted

Ammonia is a common trick amongst the balsa airplane crowd. The ammonia breaks down cellulose and makes it pliable then the cellulose re-hardens when the ammonia evaporates.

That does not sound like a good idea to do with plywood, but hey, the Germans formed the Albatross with a full monocoque plywood fuselage... so all ya gotta do is find a really old Albatross mechanic and ask if they used ammonia.

[Ragwing nut]

Re: Bungee cover wanted

Ragwing,
That is a legitimate question for this neck of the woods, but yes I do have a tub. Don't I have to make a form to obtain the right shape? Does just folding the part give it the proper shape on its own?

Fold will give very close to the proper shape. works better with hot water. Ammonia works better, but would not recommend due to the amount required. All you need for a form is to jig saw 2 pieces of ply wood to the correct shape and then use staples to hold the plywood in place as you bend it around. Plywood must be fully dry before you glue it

[Hank Jarrett]

Re: Bungee cover wanted

First response from the Albatros replica builder is they use a form and steam. Steam the wood, press into form and hold allowing to fully cool and dry.
Hank

[n6346m]

Re: Bungee cover wanted

Thanks Ragwing, I'll give that a try.

Fold will give very close to the proper shape. works better with hot water. Ammonia works better, but would not recommend due to the amount required. All you need for a form is to jig saw 2 pieces of ply wood to the correct shape and then use staples to hold the plywood in place as you bend it around. Plywood must be fully dry before you glue it

[Hank Jarrett]

Re: Bungee cover wanted

Got this this morning from Koloman Mayrhofer. This guy is a real expert on WW-I plywood and manufacturing with it. Check out

http://www.theaerodrome.com/forum/replica-aircraft/35610-albatros-d-ii-d-iii-news.html

and be ready for a LOT of fantastic reading. Even if you are not into WW-I planes like the Albatros this guys work is true art.
Hank


hallo,

There is not a single part in the Albatros covering which needs special treatment beside of soaking with water. In ww1 plywood was casein glued so steam was not an option. The design was layed out in a way that the material can be used without to much problems. We do have a problem nowadays in as far as the phenolic resin glued plywood
is much stiffer than the original, but have the advantage of using hot water.

There was a limited production of blood albumin glued plywood in the United States during ww1 which could have been steamed but I have no proof if in which aircraft this material was used .
cheers
Koloman