RE: Spray can foam?
 

If you buy the 2 part foam from fiberlay and mix it, it dries hard; it won't continue to expand. I use it all the time.

http://www.fiberlay.com/

http://www.rc-tech.net/bearcat/belly/b2.jpg

RE: Spray can foam?
 

just re-did my Twinjets nose with the spray foam stuff. The entire front end was gone almost up to the canopy a few years ago. The new nose worked out pretty good! I did a quick 5 min sanding job with a dremel and then by hand and got a wicked witch of the west appearence but its an old airplane so I dont mine :)

RE: Spray can foam?
 

mike.. i'm not familiar with plugs and your building techniques, but they are very interesting. did you make the plugs, cover them with fiberglass, and then take the foam out? i think i missed something because i thought you just used the foam structure, but that didn't seem right.

RE: Spray can foam?
 

I have used this foam plenty of times in my planes. I started by wanting to secure some weights in the very tail of my first plane. After it was done, I realized that the tail end of the fuse while normally flexible if you squeeze on it, was now firm. I then started using it on stabs that you had to just slide through a hole in the fusealge on ARFs. I never really trusted using epoxy on the small amounts of area it was being epoxied to, so I spray some foam back in there and it is solid. The main thing you do need to look out for is that its in an open part of the fuselage and it has room to expand, if not you start popping holes all over.

RE: Spray can foam?
 

This is one of the best threads I've seen in some time.
Some great ideas. Thanks to all.

Regards
Roby

RE: Spray can foam?
 

Hi,

I recently converted a EP Wattage Mad Dog to glow. In the process of doing so I had to find a way to strengthen the frontal section of the fuse where I would secure the fuel tank. I used balse and expoxy to stiffen up the fuse hung a 4 oz. fuel tank and then used "Great Stuff" foam to fill in the rest of the area in turn re-enforcing the front of the fuse and securing my fuel tank.

Mike

RE: Spray can foam?
 

sounds like a good idea, do you have picks ? Also I have use foam for other reasons and I know it expands as it hardens did you have any proplems ?

RE: Spray can foam?
 

I will try and get some pics up from the conversion soon. As the foam expanded and hardened it followed the least resistant path in to the battery/reciever bay... At that point I used a knife to cut/shape to my liking. What I really liked is how it re-enforced the fuse as the wattage mad dog uses a thin plastic covering with almost no support.

I need to find a cheap digital camera!

Pics to come soon.

Mike