stunthanger.com

Building Tips and technical articles. => Building techniques => Topic started by: Greg L Bahrman on June 13, 2006, 08:32:45 PM

Title: Another Magnum in Progress 2
Post by: Greg L Bahrman on June 13, 2006, 08:32:45 PM

Progress is slow but we got the bottom sheeted and the fuse covered in veil. The veil made a big difference in the stiffness of the sheeting. I have been considering painting the fuse and monocoating the wings to save weight. Your thoughts         n~

 y1

Title: Re: Another Magnum in Progress 2
Post by: RC Storick on June 13, 2006, 08:51:15 PM

 :! Paint it all! You  will be much happier!  j1

Title: Re: Another Magnum in Progress 2
Post by: Greg L Bahrman on June 13, 2006, 09:07:31 PM

Robert,
If I paint it all, should I silkspan the wings or continue with the veil?? Also will the dope (sig) penetrate the 1/16 balsa and damage the foam ??

Title: Re: Another Magnum in Progress 2
Post by: RC Storick on June 13, 2006, 10:39:54 PM

Brush 2 coats un-thinned clear on the wings. Apply 00 silkspan and 2 more coats unthinned clear sand and switch to 50/50 clear. CF only goes on the fuse.

Title: Re: Another Magnum in Progress 2
Post by: Mike Clark on June 14, 2006, 11:25:57 AM

Greg,

What did you use to glue the sheeting onto the foam cores? Epoxy Hopefully!

If you have done a good job at fitting your wing skins as it looks you have, matched up LE & TE, then filled your wing sheeting in places where needed, there shouldn't be a problem with the dope over the sheeted foam wing.

3 coats of 50/50 clear Dope and put down the carbon. If you have any reservations about the clear and a reaction on the foam core, then dust on the first coat.

All my previous Magnums have had silkspan & dope finishes without any problems.

$kote should be a last resort, I would think!

Mike Clark

Title: Re: Another Magnum in Progress 2
Post by: Greg L Bahrman on June 14, 2006, 08:39:23 PM

Thanks Robert and Mike,
I guess I'm committed now. I got one coat clear on the wings and will do another tomorrow.

 #^

Title: Re: Another Magnum in Progress 2
Post by: Mike Clark on June 14, 2006, 09:06:43 PM

Hey Greg,
You get an offical "ATABOY" leave the $kote in the cabinet!

I got  my Tom Morris hardware installed agjusted the flap to elevator connections and checked the flap throw, were cooking now. All nuts lock tite protected and we will close her up tommorow.

Mike Clark

Title: Re: Magnum added pic
Post by: Greg L Bahrman on June 17, 2006, 10:30:40 PM

Thanks Mike,
I bumped you up a karma for your good words. I got the wings covered with silkspan and sanded ready for primer. Still have to do fillets and other things but we are moving along. Just stuck together for show and tell.  Increased rudder area a little larger than stock. Anxious to see your progress also.  ~>

Title: Re: Another Magnum in Progress 2
Post by: RC Storick on June 20, 2006, 07:39:43 AM

Looks good but it doesn't look like a Magnum anymore.  y1

Title: Re: Another Magnum in Progress 2
Post by: wwwarbird on July 09, 2006, 03:06:46 PM

 Looks like a VERY nice job Greg. I really like the slight re-design! I'm also glad you took Sparky's advice, you'll be real happy that you painted it all in the end. Monokote is like chrome on motorcycles, just say NO. **)