David, it isn’t a battle! Nobody has to win!

My experiences are, there are nearly no professionals in this forum, and for that this was important, (You write now!)
There are all sorts of ARF's that have lightened D-tube sections but they are typically square. the round holes were not liked by the aerodynamicists.

You may experience whatever you want, but sometimes I argue with you but of course with facts. Not my case if you don’t believe me!
When you should have asked me before,"Cees, you know a lot about aerodynamics, what has to be the diameter of a holes in the D- tube to make these lighter?"
I would have liked to calculate that.
And my answer? : 0 mm of course.

And, can you leave the D tube away?Make round hole? Of course you can, you can leave a complete wing away.
But I do give my opinion with my knowhow.

That foam cutter, same story.

What has to be the fuse of the mains?: My answer: 1,6 a 2 Ampere.

Can you do it with 5 Amps? Of course,

Please do not speak about R & D because you do want people believe you are an electrician and you aren’t. In this case it is much more important not to argue, simple show the facts and calculations.
Start with this post and you see I do give a normal input.
http://www.rcuniverse.com/forum/fb.asp?m=10283123

R&D? It’s a matter of live danger!
http://www.rcuniverse.com/forum/fb.asp?m=10283714

And the builder, does not even know where he is talking about, he is a modeler.
I'm not sure what went wrong with the 5A fuse choice
So, end of input in this old thread.

Be careful!!!!!


Cees