Okay, I am getting this thing worked up nicely as a VLF style build. Will post up cut files and SU file asap.

CG on this plane would do well at 28-30% of chord from LE. Attached files

 

Thanks for the CG info. I also noted 9gm servos butted back=to=back in the hole provided in the original design stick out from the fuselage. Maybe should be two holes here, one for elevator and one for rudder OR use a 5gm servo which is smaller and the hole would need to be resized. I should have mine ready to fly tomorrow...not looking purdy...but ready to test fly. I will try to make a purdy one of it works. There are lots of layers of foam being glued together here, what adhesive are you guys using to affix fuselage and LG parts? I know water that does not contain salt will not affect the running much if using the float set up but is everyone else protecting the ESC and RX from the water in some way? I have unintentionally landed in enough ponds to know it doesn't short anything out (at least it hasn't so far).
Thanks again everybody for your help.

Chuck

Oh, looking forward to revision downloads coming available!

 

Here is my SketchUp file along with 2 .cnc files for cutting. All parts are contained on 2 sheets, including the float parts.

Mine are set up for using a 1/16" cutter and a cut area of 22" x 44". This is the max area that I can cut on the Iron Phlatprinter without taping a tail on the foam. You might have to tape a tail on your foam to use them.

Edit 16-FEB-2012:

Re uploaded the cut files. There was a problem with 1 of 2. I used the fold cut tool to cut a slot to insert the control horns. For some reason it was giving the routine fits. Changed it to a centerline cut and that resolved the problem. Also broke the SU file into three seperate files to reduce the processing time. A Model and sheet 1 and sheet 2 files. Attached files Magnum Reloaded 1of2.cnc (111.9 KB)Â Magnum Reloaded 2of2.cnc (370.1 KB)Â Magnum Reloaded FFF.zip (2.9 MB)Â Magnum Reloaded.skp (6.2 MB)Â

 

I have used Gorilla Glue almost exclusively until recently. Someone turned me onto Elmers rubber cement. It works great for laminations and the lamination lines sand effortlesslty. It also dries very quickly. In fact you use it like contact cement, allowing both sides to dry (less than 5 min.), then aligning and pressing together. It is a good idea to clamp them together as you would with the GG. This eminates any voids from waves in the foam.

If you try this out, you will still need GG for the wing to fuselage or H stab to fuselage joints. Or any T or L type joint.

I am on my second plane on a 4 oz bottle and may have enough to build the Magnum Reloaded as well. It brushes on and dries very thin. Nice stuff! Attached files

 

This glue does not attack FFF. The only drawback is that there is no slip sliding the part around. Once you set it, thats it.

 

Okay, I did find a problem with my file. I did not count enough center laminations for the floats. The landing gear is 5 lams wide, so thats what I did for the floats. Well you need an extra lam on each side to get over the outside of the wheel pants. So the file is 4 float centers short of complete. I think you guys can figure out what to do.

Anyway, I wanted to post another rendering with the floats. You will notice a tail skid in here too. That is in the SU and cut files as part of the center lamination.

A pair of magnets in the bottom of the wheel pant to the float should keep them secure enough. Attached files

 

Going to do the cuts tomorrow evening.

 

Lots of holes cut for lots of things. What is the rectangular hole for in the bottom of the fuse? Also, there is still a notch at the front of the fuse beneath the motor. Is this where the battery is intended to go? While I am at it, what a dynamite job in SketchUp. I will try to cut one tomorrow and see if I can figure oul what all the different holes are for. I am trying to figure out how to keep the servo wires inside the fuse before the outside panels are glued in place but I think I need to cut it out first and see what goes where. Again...GREAT JOB! I envy your skills.

Chuck

 

Chuck,
That pocket on the bottom is for the battery. I put is at the CG to allow different options since this plane will be fixed with no removable wing.

Feel free to modify as needed or wanted, but the basic structure design is sound and fits together.

Re uploaded the cut files. There was a problem with 1 of 2. I used the fold cut tool to cut a slot to insert the control horns. For some reason it was giving the routine fits. Changed it to a centerline cut and that resolved the problem. Also broke the SketchUP file into three seperate files to reduce the processing time. A Model and sheet 1 and sheet 2 files. The .zip is everything that has been updated into a single package.

 

Okay! Going to try it out!

Thank you,

Chuck

 

Here are a few more screen shots to explain things.

Hatches may be glued in place or simply tape sealed. Attached files

 

Can I cut the overhead cnc files on my MKII" Why a 1/16 bit on the previous version and a 1/8 but on this latest version? Photos really look nice. Super job. Thanks.

Chuck

...oh...did you have to heat the foam on the curved PVC to get the curve in the wing? Inquiring minds want to know...

 

Gotcha, thanks.

Chuck

 

Question; will changing the bit diameter in the parameters dialog automatically change to pre-existing 1/16" offset previously generated?