Oil Soaked underneath Monokote

I just recovered one wing of my Brodak Mustang and found that the sheeting on the leading edge was oil soaked . Now I never dope the wood that I am covering with plastic . Did I make a big mistake ?
Bill Barberx(

Instead of dope, try Balsarite. Also, to remove the oil, try using K2R dry cleaning fluid-in-a-can.

LAST EDITED ON Jul-09-03 AT 10:35 PM (CDT)
 
Hi Bill,

No not really,
Now If I understand your post?
your wood is oil soaked and you need to repair it,
so if thats the case
then I think it can be saved

after you get back to the balsa, then what I would do is
place a clean rag over the soaked areas and with your iron heat over the rag as if you were trying to cover the wing with it, you should notice the oil starting to soak into the rag
after you do all the bad areas then you can lightly sray some prep sol or other degreaser over the areas and wipe or pat down until you feel it is oil free, I would then repeat the rag heating process to see if your done. I would then Balsa rite the areas and recover.

BTW all the planes on this page are Monokoted
http://www.builtrightflyright.net/controline.htm

Walter , thanks for the info . My question is this common with monokote to have oil seepage thru it ? This plane is about 4 years old with a lot of flying time with high castor fuel . I have monokoted in the past without the oil soaking < my planes didn't last as long back then >.
Bill Barber

LAST EDITED ON Jul-10-03 AT 01:30 AM (CDT)
 
Bill

Not always
Now in my past experience
Over a long.... period of time it may happen in the nose or at the seems
If the seems are small

I always balsa-rite the Leading edges and the outter nose area

see pictures below

in the tank area I put a thin coat of epoxy as I build the nose
and after the Monokoting is done I seal the inner nose area with epoxy

the transparent red & white Nobler below lasted 9 years
it was constantly practice with and saw countless competition flying
before the nose became saturated with fuel and was finally put to rest

pilot error,

Above pretty much answers your question.

There is never a good reason for oil to seep under MonoKote. Especially on a wing panel. Maybe it can happen around the engine compartment, but following above good advice even this area is not much of a concern.

You obviously had a weak lap joint. Use lots of heat, increase the width of lap, even if others are getting away with 1/16" overlaps.

Walter, that is one gorgeous plane!!

Tim

Hi Bill, I unfortunately have had similar findings on my favorite plane, an FW190 by Brodak! This plane now has over 500 documented patterns on it by me and who knows how many by the previous owner! Its all Monocoated and has had seepage at the LE and where the gear exits the bottom. Bob Zambelli put me on to a substitute for K2R: mix rubbing alcohol and talcum powder to the consistency of milk, paint this mix on the soaked area and watch the goop be sucked out! Several treatments and you may proceed with the Balsarite for Film. Around here, Western Pennsylvania, K2R isn't always available also this mix is much cheaper!

Thanks guys for the advice , now I am considering covering the wing with silkspan after removing the oil . The rest of the plane is Brodak silver dope and still looks good.
Bill Barber