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Mr Mulligan *slow* build thread (Read 24033 times)
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Re: Mr Mulligan *slow* build thread
Reply #95 - Mar 21st, 2017, 2:59pm
 
Peter Stegemann wrote on Mar 20th, 2017, 5:45pm:
Just wanted to let you know that on the 12th of March 2017, I actually managed to fly the Mister Mulligan... a long time it was sitting on the shelf, indeed.

That has got to be a record for something!!!

Kay
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Peter Stegemann
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Re: Mr Mulligan *slow* build thread
Reply #94 - Mar 20th, 2017, 5:45pm
 
Just wanted to let you know that on the 12th of March 2017, I actually managed to fly the Mister Mulligan... a long time it was sitting on the shelf, indeed.
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Re: Mr Mulligan *slow* build thread
Reply #93 - Oct 7th, 2008, 10:32pm
 
yancovitch wrote on Oct 3rd, 2008, 5:09am:
gee....fun to see one overcomming obstacles...impressed with your closeup shots...great depth of field.....curious about your covering material and covering technique......never saw that before....


All the covering is done with Oracover Ultracote Chrome.

http://buegelfolie.de/site.jsp?node_id=2007180101100473107&root_node_id=20053210...

Oracover is the best covering film I know - but I had lots of problems with the chrome variant. This is a shrinking film with a metal layer and an adheasive that is activated by heat. I had good results with the transparent and the opaque variants, but the shrinking behaviour of the chrome one is a bit different.

The technique is simple - cut out a matching piece, tack the corners on with a normal or a special covering iron. Then iron on the edges. After that, shrink the surface until everything looks nice and smooth.

Now about the problems... while shrinking, you have to be very careful that the film keeps sticking on the edges. If the surface there is too small or you accidentially heat it up, the film shrinks too much and you have to redo the whole part.

In that context, also a big danger is that the parts you've sticked the edges on are to weak - that happened to me at the back of the Mulligan with the fine grid structure. While shrinking the film surface, a strut was bend. This leaves a bad film surface and for sure a badly shaped structure.

Next problem: If you heat up more and more because you want to get rid of this last wrinkle - you will reach the temperature that destroys the film.

This all sounds like this is a lot of stress and a bad technique - but for example covering the wing worked like a charme.

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Re: Mr Mulligan *slow* build thread
Reply #92 - Oct 3rd, 2008, 5:09am
 
gee....fun to see one overcomming obstacles...impressed with your closeup shots...great depth of field.....curious about your covering material and covering technique......never saw that before....
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Re: Mr Mulligan *slow* build thread
Reply #91 - Sep 16th, 2008, 6:40pm
 
It's not exactly easy to plug the battery in when the wing is attached...

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Re: Mr Mulligan *slow* build thread
Reply #90 - Sep 16th, 2008, 6:36pm
 
Last step is the battery location. I've checked, checked again and decided to add a small balsa baseplate so the battery has a secure place.

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Re: Mr Mulligan *slow* build thread
Reply #89 - Sep 15th, 2008, 10:24pm
 
Wing done!
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Re: Mr Mulligan *slow* build thread
Reply #88 - Aug 14th, 2008, 10:35pm
 
Panorama view.
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Re: Mr Mulligan *slow* build thread
Reply #87 - Aug 14th, 2008, 10:27pm
 
Wing covering was boring, so this continues with mounting the servos.
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Re: Mr Mulligan *slow* build thread
Reply #86 - Jul 31st, 2008, 7:53pm
 
Cabin

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Re: Mr Mulligan *slow* build thread
Reply #85 - Jul 29th, 2008, 6:49am
 
If you want a perfect covering job, you've got to start with a perfect wood job anyways. Still, my wife likes it, so it can't be wrong.
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Re: Mr Mulligan *slow* build thread
Reply #84 - Jul 29th, 2008, 6:48am
 
I'm not very motivated at the moment, just want to get it done. Some wrinkles here and there, but I'm too lazy to do it all perfect. And on the pictures as well as in the air you can't see it anyways.
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Re: Mr Mulligan *slow* build thread
Reply #83 - Jul 29th, 2008, 6:46am
 
I've covered most of the body and added side windows.
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Re: Mr Mulligan *slow* build thread
Reply #82 - Jul 22nd, 2008, 10:04pm
 
The rudder horn side is the easiest part.

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Re: Mr Mulligan *slow* build thread
Reply #81 - Jul 22nd, 2008, 10:03pm
 
It's done the same way as in the Fokker DVII. The cabling is even thinner this time, but a variant with some synthetic covering.

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