New Products Flash Sale
Thread Tools
Old Jul 13, 2005, 11:53 AM
zoohr is offline
Find More Posts by zoohr
starting at RC

Beginner try, will it fly


After six months reading and learning mostly from this forum, I finally came up with something.
This is my own design, not very original, i am afraid but i am happy with it.
I apologize for my bad English and metric meausures.
I was intending to built from depron, but in my country, were is only ONE RC shop, and this one mainly oriented to glow engines and planes with prices 300 % higher then regular US prices, I end up with something like foam from meat trays, but in form of wall ( I do not know the word, things you put on the wall).
Wingspan 900 mm,chord length 140 mm, Jamara speed 400 7,2 V, jamara esc 12 A, old MULTIPLEX Rx 4ch, 2 no-name micro servos, gunther zagi prop 125 x110 mm (4,9 x 4,3 I think), 8,4 V homemade 900 mah AA ni-cd pack.
Weight about 460g.
I got confused with MOTOCALC. It gave me with same setup current of 5,4 A but I mesured with good quality Fluke instrument direct from battery to neutrally timed motor current of 6,5 A. Any comment?
I am also not shure about CG.
P.S. Magnets mounts for motor and hood!
P.S.2 I must change the rear wheel!
Sign up now
to remove ads between posts
Old Jul 13, 2005, 12:08 PM
weather_man is offline
Find More Posts by weather_man
semper ventosus
weather_man's Avatar
It looks very cool to me. Give it a test glide and see what it does. Good Luck!
Old Jul 13, 2005, 12:18 PM
Fordplay is offline
Find More Posts by Fordplay
Wheels up!!!
[QUOTE=zoohr]
I apologize for my bad English QUOTE]

Looks good. Do what the Weather man said and give it a glide test.

Why apoligize, you spell better than I do.
Old Jul 13, 2005, 12:23 PM
micsaund is offline
Find More Posts by micsaund
Registered User
That looks very nice - I can understand why you are hesitant to fly/crash it Find somewhere soft (long, springy grass or something) and give it a hand-toss and see how it glides. Also, ensure that your CG seems appropriate in relation to the wing (someone else can provide tips on how to locate the best CG I'll bet).

Mike
Old Jul 13, 2005, 12:26 PM
zoohr is offline
Find More Posts by zoohr
starting at RC
I will give it glide test tommorow, if the rain stops.
Old Jul 13, 2005, 12:51 PM
Sparky Paul is offline
Find More Posts by Sparky Paul
Ascended Master
Sparky Paul's Avatar
For your c.g., put it at 25% of the root chord. No more than 30% back.
It should be a good gentle flier.
Old Jul 14, 2005, 02:14 AM
Ron H is online now
Find More Posts by Ron H
Registered User
Yes
Old Jul 14, 2005, 07:53 AM
abenn is offline
Find More Posts by abenn
Registered User
Quote:
Originally Posted by zoohr
I was intending to built from depron, but in my country, were is only ONE RC shop, and this one mainly oriented to glow engines and planes with prices 300 % higher then regular US prices, I end up with something like foam from meat trays, but in form of wall ( I do not know the word, things you put on the wall).
Looks very good

I've got one question though; it looks to me like the wings are made out of balsa sheet with white foam (is that the wall "tiles"?) on top to make the shape. The balsa looks like it's crossways, which is not very strong. Have you got wood beams ("spars") running along the length of the wing inside the foam?
Old Jul 14, 2005, 10:25 AM
hump is offline
Find More Posts by hump
new B
hump's Avatar
The material you have used is unfamilar to me, but it appears to be a foam based interior wall paneling with a simulated wood grain finish?
Old Jul 14, 2005, 10:42 AM
zoohr is offline
Find More Posts by zoohr
starting at RC
The wings are made from wall panel foam with white foam on top glued together, and sanded in shape. 3 parts are glued together with epoxy and all edges reinforsed with hot epoxy painted with ordinary small brush.
Yes hump, you are right. Thats the only material I can find similar to depron,
but it can't be bend like one, it often brake.
Last edited by zoohr; Jul 14, 2005 at 10:49 AM.
Old Jul 14, 2005, 11:24 AM
KillerAir is offline
Find More Posts by KillerAir
Plane dodger
KillerAir's Avatar
Looks good, don't know about the motor magnets for a mount, might not hold.
Personally I would not glide test. I would fly it on power, you should have an experienced pilot maiden for you if you are just starting up as a flyer.
Great job and good luck.

Killer
Old Jul 14, 2005, 11:41 AM
Ekim is offline
Find More Posts by Ekim
Linux addict
Ekim's Avatar
How heavy is it? try not to be much over 20oz...........better 15oz
Old Jul 14, 2005, 11:55 AM
zoohr is offline
Find More Posts by zoohr
starting at RC
460 g = 16,26oz
Old Jul 14, 2005, 12:09 PM
hoverboy7 is offline
Find More Posts by hoverboy7
Permanently Banned
hoverboy7's Avatar
i think you should rubber band or zip tie that motor in.
Old Jul 14, 2005, 12:38 PM
zoohr is offline
Find More Posts by zoohr
starting at RC
Motor is secure enough. It is designed that way if the plane hits the ground or tree, motor and hood goes off. I had tried with full power, and shake fast the plane in all
direction and motor stood in place.


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
E-Streak, 400/22, 7x5, 8x1300 , how will it fly ? Al P Sport Planes 4 Jun 07, 2002 01:57 AM
Scratch Built Project - Will it fly??? Model Aero Sport Planes 20 Mar 07, 2002 08:48 PM
will it fly? Shawn Palmer Electric Plane Talk 2 Dec 17, 2001 02:06 PM
Eagle II, MM or EP, 6:1, 10-2400mah cells, big prop, will it fly???? mrtim Power Systems 0 Sep 07, 2001 08:49 AM
New HERR Speed 280 Planes that will fly in wind. Looooeeee! Electric Plane Talk 5 May 08, 2001 02:51 PM