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Post  aspeed Sun Oct 27, 2019 7:13 pm

Thought I'd put this here if it is OK.Snip 1/2A Combat plan 12a_pe11
Snip 1/2A Combat plan 12_a_c11
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Post  Marleysky Sun Oct 27, 2019 7:17 pm

Very nice. thank-you!
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Post  Basswood Wed Mar 11, 2020 5:46 pm

I like It. Thanks for posting. I used to fly combat but I don't remember the ribs having that shape. but that was 50 years ago. Very Happy Old Bugger
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Post  aspeed Wed Mar 11, 2020 6:14 pm

I am pretty sure I made one back in the day, but am positive I had a one piece elevator. I guess I modified it. Used a TD and flew it a lot all summer with a lot of throw on the elevator. It would slow down a lot and you could guide it around very precisely. Later I moved the pushrod out a couple notches and it didn't slow down on the loops, so it was very fast and I didn't like it any more, so a buddy bought it and crashed it right away. Toolbox in the rat trap on the 10 speed going to the school yard, and the plane tucked under my arm. I bet a Fora would be fun.
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Post  Basswood Wed Mar 11, 2020 6:49 pm

Yep with full elevator control you can plant one of those combat planes real quick.
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Post  TLAnderson Wed Mar 11, 2020 7:53 pm

I picked one of these up last fall, at a hobby shop that was closing.

Snip 1/2A Combat plan Combat10

Haven't flown it yet. Still have snow on the ground.

Posted about it here.

https://www.coxengineforum.com/t13449-unidentified-1-2a-combat-plane
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Post  aspeed Wed Mar 11, 2020 9:17 pm

That is a long wait for a flight from October. Doesn't winter suck?
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Post  andrew Wed Mar 11, 2020 11:20 pm

Here's a 1/4A combat plane from Model Airplane News (plan page pullout), circa 1961, that used the diamond airfoil. It was, if I remember, my first scratch built plane.


Snip 1/2A Combat plan Little10
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Post  batjac Wed Mar 11, 2020 11:27 pm

I love the old diamond ribs.  You can build the whole wing on a flat surface in just a few minutes using CA.  I may have to build one of these really quick, even though I have far too many planes as it is. Be a good way to use up some of the scrap wood I have overflowing everywhere.  I saved the pics and will print them out with Tile Print tonight.

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Last edited by batjac on Wed Mar 11, 2020 11:33 pm; edited 1 time in total
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Post  batjac Wed Mar 11, 2020 11:30 pm

andrew wrote:Here's a 1/4A combat plane from Model Airplane News (plan page pullout), circa 1961, that used the diamond airfoil. It was, if I remember, my first scratch built plane.

Andrew,  I built one of these right when I got back into CL about six years ago.  It was a big hit at the circle.

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Post  andrew Wed Mar 11, 2020 11:43 pm

batjac wrote:
Andrew,  I built one of these right when I got back into CL about six years ago.  It was a big hit at the circle.

The Gemologist Mark

When I saw your sig this time (I always look forward to reading these), it dusted off some neurons in the old brain. The plane is named Little Gem -- what better name for a plane using a diamond airfoil (sorry, couldn't resist).
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Post  NEW222 Thu Mar 12, 2020 12:35 am

It is not here with me, but the 1/2a Circle master also uses a diamond airfoil. I have those here should anyone want a copy in pdf.
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Post  batjac Thu Mar 12, 2020 12:55 am

NEW222 wrote:It is not here with me, but the 1/2a Circle master also uses a diamond airfoil. I have those here should anyone want a copy in pdf.

https://outerzone.co.uk/plan_details.asp?ID=4378

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Post  batjac Thu Mar 12, 2020 10:23 pm

Okay, I sized and printed out the plans last night. Am I the only one who thinks this thing will be nose heavy as designed?

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Post  NEW222 Thu Mar 12, 2020 11:06 pm

Sorry Mark I cannot be of more useful assistance about it at this time as mine is at the cottage in winter lockup. From what I remember, I used a horseshoe backplate engine with external tank on mine and think it was good to go.
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Post  Basswood Fri Mar 13, 2020 12:21 am

Ok I understand the pennies on the outer wing tip, Old school to keep the lines tight in the wind but adds weight to the plane.
we always just turned the engine mount to the right sometimes with washers under the engine.
But why in the Snip 1/2 A plan is the engine mount centered to the left? because the right is shorter than the left?
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Post  Oldenginerod Fri Mar 13, 2020 4:08 am

Basswood wrote:Ok I understand the pennies on the outer wing tip, Old school to keep the lines tight in the wind but adds weight to the plane.
we always just turned the engine mount to the right sometimes with washers under the engine.
But why in the Snip 1/2 A plan is the engine mount centered to the left? because the right is shorter than the left?
Basswood
The wing tip weight is to compensate for the weight of the lines on the inner wing, plus the fact that the plane will likely be flying higher than the control handle. The weight keeps the wing more horizontal.
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Post  getback Fri Mar 13, 2020 7:28 am

But why in the Snip 1/2 A plan is the engine mount centered to the left? because the right is shorter than the left? wrote:
It is offset to the right not the left as the controls are exiting the plane.
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Post  aspeed Fri Mar 13, 2020 8:55 am

Control line planes are often made with the inboard wing 1" longer so the wing has more lift to support the line weight. On my old F2A planes there was not even an outboard wing at all. If you don't want to add a penny, to can add a basswood or spruce corner gusset and or make the tip piece out of spruce too. The tip usually hits the ground on the crashes. We have to use a nickle because we don't use pennies any more. I used the TD mount and it balanced OK. I covered in silkspan and dope. I am pretty sure this is the plane I made, not the George like I thought.
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Post  63expert Fri Mar 13, 2020 5:15 pm

Some CL planes are asymmetrical because the outboard wing flies faster than the inboard wing.
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Post  Mark Diedrichs Fri Mar 13, 2020 5:44 pm

Hello, I think you got the wing size thing backwards. Mark
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Post  Basswood Sat Mar 14, 2020 3:37 am

This is getting fun. I'm learning a lot here.
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Post  Basswood Sat Mar 14, 2020 4:11 am

We used to call them bat wings over in S. Cal Does anyone remember that.
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Post  batjac Sat Mar 14, 2020 7:44 pm

I remember S.Cal.     Doh!     Wish I didn't...

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Post  Basswood Mon Mar 16, 2020 6:09 pm

batjac wrote:I remember S.Cal.     Doh!     Wish I didn't...

The Mojave Mark

That's why I moved to Az. plus the flying is better, less trees. Laughing
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