View Full Version : 25-30 oz. plane

10-28-2005, 06:14 AM
I have just built a plane using nastytoesaviation.com fuse and wing setup. Covered with monocote. F3/warbird style plane.
Right now it weighs 15 oz with nothing in it at all. I am thinking with a normal set up 3s 2100 pjs 1200 brushless 35A pheonix and micro servos it should come in around 27 oz.
If you (anyone)had the choice to completely power this plane (bat,motor, speed control) and not too concerned with money, what would it be.
I am looking at 4s 2100 battery maybe and would like to try an AXI 2820???

Matt Kirsch
10-28-2005, 01:29 PM
Unless the plane needs the weight up front, the AXi2820 setup is overkill. It'd be more appropriate for a 2-1/2 plane if you're looking to 3D, or a 3lb plane if you're looking for good pattern performance.

You're in the 1-1/2lb range, so I'd be more inclined to recommend either a 2808/24 for F3A or a 2814/12 to handle the Watts for 3D. Both on a 3S LiPoly, with the 2808 drawing about 20 Amps, and the 2814 drawing about 30.

Unbalanced prop
10-28-2005, 02:56 PM
A couple other good choices would be the Hacker A30 S or M motors, or the Hyperion 3013 or 3019 outrunners with a 3S pack.


10-29-2005, 05:43 AM
I have a plane close to 3 lbs and power it with a JustGoFly 450TH (http://justgofly.com/tech_450TH.htm)
It is geared 4.5:1 using a APC 13x8 prop. With a 3s 2100mAh 15c also from JustGoFly.
The whole setup: 32 amp ESC, 3000kv Motor & 2100mAh 30amp Battery was $165 with shipping.

Video of how well it pulls a load (http://media.putfile.com/SSv2powersetupvidep)

Picture of Me and my plane (http://static.rcgroups.com/forums/attachments/4/6/3/0/1/617088.attach?EzkuqPHlZUqcozpyZwOGH8LlWGVjWGV7LJ6j WGAPWGVjoJHyZwOmoJSfoPHlZUOcLl0dpTp2AwR8ZQt9B7ygLJ qyWGWTnaOyMj==)

10-29-2005, 03:59 PM
My original intention was to make 3 Identical planes for combat and make use of some old gws geared 400's.
Do you think that a gws 400 3.5:1 with a 12x6 will pull this plane? With that set up, it will probably be around26oz.

Also, has anyone used a brushed 600 motor? I would like to rig 3 planes the same and I was wondering what kind of power a 600 has and what kind of battery it would require?

Thanks for all the replies,

Matt Kirsch
11-02-2005, 01:37 PM
Speed 400 is only good for about 20 ounces if you want a plane with any aerobatic ability at all. At 26oz, it best have plenty of wing area. You won't be happy with the 400 setups.

The 600 would cause a huge jump in weight. Requires full SubC cells if you want any flying time at all.

11-03-2005, 01:49 PM
I have a bunch of Kokam 1500 3s and wanted to utilise (sp) them, do you think it will work.
Also I have a 49" ws and 39" length should be big enough to handle 32oz. or so?

11-03-2005, 03:11 PM
I have a 26oz RTF Citabria 52" ws I use a www.justgofly.com (http://www.justgofly.com) 400DF geared 3.9:1 with a GWS 12x8 HD prop.
It pulls my plane around real well. Just you would need to have at least a battery able to do 20amp discharge to be safe.

Here is how well this motor pulls my plane. It is a slow fly type plane so it want be that fast.
I built a year ago but you can get the Idea of it's power.

Hand Launched Citabria (http://static.rcgroups.com/gallery/data/500/46301Citabria_Hand_Take_off.wmv)

Ciatabria Pic
(http://static.rcgroups.com/forums/attachments/4/6/3/0/1/552047.attach?GTShMTyhMlHlZTqyLKVyZwOwnTShM7IxWGVj ZF0dpTp2AGHlZQD8B7ygLJqyWGWTnaOyMj==)

11-05-2005, 03:07 AM
How about a twin 400 setup with 2 1500 3s paralelled
p-38 0r mosquito?

11-08-2005, 12:02 AM
wow i just checked out the site for justgofly...impressive

11-08-2005, 01:30 AM
N/P Glad to help..... I have JustGoFly motors on all of my planes they work Great for me.

Link to a few plane videos with JustGoFly Motors (http://www.rcgroups.com/gallery/showgallery.php?cat=500&ppuser=46301)

11-09-2005, 03:36 AM
where do you get the gws hd props? is that what they are called?

11-09-2005, 03:59 AM
GWS Hyper Drive....HD for short.
I use 12x8 and 11x7 alot with the 400DF & 400f
I get mine at JustGoFly.com
Prop link (http://justgofly.com/Order%20Form.htm#Props)

Also most online RC sites have them.

On my big plane I use the APC 13x8 Special Thin props for Electric flight (http://www.hobby-lobby.com/elecprop.htm)
And also on some of my other planes.
They are stiff and have a larger prop blade than the HD props.
But they dont flex like the GWS slow fly props do.