HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Sep 20, 2012, 03:35 PM
Inspired by the wings of an An
Andycap's Avatar
Leeds
Joined Mar 2003
1,937 Posts
Quote:
Originally Posted by RCvehicleGuy View Post
I've heard a router used for this before....
Believe it or not I am actually building some planes in my Tech class this year and have access to a router... Might have to try this for milling.
V bit for a hinge seems like I might get a little crossed up. I know from previous builds that you're screwed if that hinge is not PERFECTLY straight. A Knife against a straight edge seems to provide the most consistent results. I get little waves free hand though.
I do the beveling free hand. That is very reliable and I can leave a little bit of foam left so I have a foam and tape hinge. Kinda neat but not necessary.
The idea of using the V bit in the router for the hinge line is so you get a living hinge. You do not have to cut all the way through the depron and the skin forms the hinge. this eliminates the need of taping the hinge line. Saves another 1 to 1.5g on a typical F3P model. All you need to do is run the router against a straight edge. Its honestly really easy. Mind you having my own CNC router makes all this history now.
Andycap is offline Find More Posts by Andycap
Reply With Quote
Sign up now
to remove ads between posts
Old Sep 20, 2012, 03:50 PM
Inspired by the wings of an An
Andycap's Avatar
Leeds
Joined Mar 2003
1,937 Posts
Quote:
Originally Posted by wildpalms View Post
Nice if you have your own CNC mill :-)

I've had a few things CNC cut commercially and quite cheap as very little tool time involved. As soon as I had milling done the time goes up and the cost was getting silly.

Andy has his own machines. The way to go.

Dave
The big ones just almost ready for the final connections too Dave, Full sheet of Depron aero just fills the bed nicely with not so much as a mm to spare in any direction. Wonder if that was a fluke
Andycap is offline Find More Posts by Andycap
Reply With Quote
Old Sep 20, 2012, 03:54 PM
Inspired by the wings of an An
Andycap's Avatar
Leeds
Joined Mar 2003
1,937 Posts
Not easy to tell on this image but "MTF" means the depron becomes translucent once its been milled. Skin thicken of around 0.35mm
Andycap is offline Find More Posts by Andycap
Reply With Quote
Old Sep 20, 2012, 04:06 PM
Mr. Foam, Tape, and Carbon
RCvehicleGuy's Avatar
Joined Feb 2011
292 Posts
Now I'll have to try milling a plane. Looks doable. Should be fun.
RCvehicleGuy is offline Find More Posts by RCvehicleGuy
Reply With Quote
Old Sep 20, 2012, 04:31 PM
Professional idiot
Hampshire, UK
Joined Jun 2002
3,119 Posts
Milling by hand is surprisingly easy and surprisingly fun. Never as easy or tidy as CNC though. It makes one hell of a mess :-)

Who will be first to ask Andy what MTF means then :-)

If I was going down the route of paying a third party to cut I would go the whole hog and go for mylar. Best stuff is to get it from a free flight supplier. Very very thin, light and rather strong.

Dave
wildpalms is offline Find More Posts by wildpalms
Reply With Quote
Old Sep 20, 2012, 06:20 PM
Mr. Foam, Tape, and Carbon
RCvehicleGuy's Avatar
Joined Feb 2011
292 Posts
Quote:
Originally Posted by wildpalms View Post
Milling by hand is surprisingly easy and surprisingly fun. Never as easy or tidy as CNC though. It makes one hell of a mess :-)

Who will be first to ask Andy what MTF means then :-)

If I was going down the route of paying a third party to cut I would go the whole hog and go for mylar. Best stuff is to get it from a free flight supplier. Very very thin, light and rather strong.

Dave
I know I said this somewhere else before. But you can also use Saran wrap to cover a mylared plane. I have done that once. Plus instead of milling out my holes I can just grab my knife and go to town on it.
I am going to try milling though so I can have a little experience in that... Next model.

Chris G.
RCvehicleGuy is offline Find More Posts by RCvehicleGuy
Reply With Quote
Old Sep 21, 2012, 01:07 AM
Inspired by the wings of an An
Andycap's Avatar
Leeds
Joined Mar 2003
1,937 Posts
I intend to do a mylar model some time this season also using Mylar from frreflightsupplies.co.uk, that is as long as Gary's still happy to put some paint on it
Andycap is offline Find More Posts by Andycap
Reply With Quote
Old Oct 03, 2012, 03:14 PM
ich bauen groß modell flugzeug
Keenan smith's Avatar
United Kingdom, London
Joined Dec 2010
6,831 Posts
right im back on this project now.. ill be sending the Cad files over to brett (my CNC guy) and have a couple of test planes made up...

K
Keenan smith is offline Find More Posts by Keenan smith
Reply With Quote
Old Oct 03, 2012, 04:07 PM
Mr. Foam, Tape, and Carbon
RCvehicleGuy's Avatar
Joined Feb 2011
292 Posts
Good luck!

Chris G.
RCvehicleGuy is offline Find More Posts by RCvehicleGuy
Reply With Quote
Old Oct 04, 2012, 09:05 AM
ich bauen groß modell flugzeug
Keenan smith's Avatar
United Kingdom, London
Joined Dec 2010
6,831 Posts
Thanks RcVehicleGuy,
i made a Teeny mod to the postioning of the Brakes to rid the pane of KE coupling as much as possibe and also a mod to the wingtips to help with rolling harriers ...

Gonna send over the files today... and see what brett can do...

K
Keenan smith is offline Find More Posts by Keenan smith
Reply With Quote
Old Oct 04, 2012, 07:32 PM
Mr. Foam, Tape, and Carbon
RCvehicleGuy's Avatar
Joined Feb 2011
292 Posts
Sweet, what does it do in knife edge? Track to the gear side? Try some landing gear with big wheel pants if it still does that, if I guessed right in the first place...
You could also move the wing position around. Lots of things you could try.

Chris G.
RCvehicleGuy is offline Find More Posts by RCvehicleGuy
Reply With Quote
Old Oct 04, 2012, 07:41 PM
"Free" in Christ!
Free's Avatar
United States, CA, SF
Joined Jan 2012
852 Posts
A lot of people say knife edge coupling is all in the CoG. You could mess around with that too!

Free
Free is offline Find More Posts by Free
Reply With Quote
Old Oct 04, 2012, 10:04 PM
Mr. Foam, Tape, and Carbon
RCvehicleGuy's Avatar
Joined Feb 2011
292 Posts
Suppose the vertical CG could work in ridding yourself from coupling but then you get adverse yaw buffoonery because the CG is under or over the rolling axis.
Us plane designers just can't win can we?

Chris G.
RCvehicleGuy is offline Find More Posts by RCvehicleGuy
Reply With Quote
Old Oct 05, 2012, 09:03 AM
ich bauen groß modell flugzeug
Keenan smith's Avatar
United Kingdom, London
Joined Dec 2010
6,831 Posts
haha!
yes how'd yoou know it was rolling to gear side.. ?
im adding the wheel pants to the Cad drawing and sending those off now..

K

BTW rolling circles are now a Breeze!
Keenan smith is offline Find More Posts by Keenan smith
Reply With Quote
Old Oct 05, 2012, 10:54 AM
Inspired by the wings of an An
Andycap's Avatar
Leeds
Joined Mar 2003
1,937 Posts
Quote:
Originally Posted by 3DDFHobbies View Post
a feature you may not see on many F3P Planes is TFG's (Top Force Generators) to improve Elevator Effectiveness aswell as way Over-Size SFG's (Side Force Generators) to improve Rudder Effectiveness and Stabilize Wing rock Near and Below Stall speed... i'll include a Picture on the Next Post....
The TFG (Canaliser) is there to improve rudder response, not elevator and is common on most F3P models since Donatas made it popular with his knowledge gained from F3A
Andycap is offline Find More Posts by Andycap
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Find hobby shop open www.f-hobby.com find hobby Hot Online Deals 96 Yesterday 12:07 AM
Question 3D Hobby Shop OR Twisted Hobbies turboready 3D Foamies 35 Apr 14, 2013 10:32 AM
New Product 3D DreamFactory (3DDF) Genesis 34 BETA TESTERS WANTED! Keenan smith Indoor Pattern/F3P 53 Oct 07, 2012 05:31 PM