Simitar Astron Pole Star Classic Wiseguy - Page 8 - RC Groups
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Oct 20, 2007, 04:44 PM
Happymcc's Avatar

Love the thread

I have followed Bill Evans as long as I have been flying models , about
25 years now . I love plank wings I think think they fly like birds .
I have been working on my own design for some years now based on
the work done by Bill . I still have not built but want to build a 540 .
My thanks to the author of this thread I have not had time to read it yet
but I plan on spending some time here .
For my design I have strayed from the Simitar airfoil and modified a Faval
airfoil . The wing I am holding has a Rino Rudder on it that I am experimenting
with , I like it
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Oct 20, 2007, 06:21 PM
Registered User

What's a Rino Rudder?

What's a Rino rudder?

How is your airfoil different from the Evans Simitar airfoil?

I used to fly a lot of plank flying wings back in the early 1980s. I always used a symmetrical airfoil and found it worked really well. For the Pole Star the our SFW Sweeper, I used the ESA. After flying it, I remember the limitations it had. It doesn't work very well in outsides. Maybe I do more outside loops, square loops and square 8's than most people, but I always find any type of semi-symmetrical airfoil to be very limited for aerobatics. I'm going to try something like the Pole Star, but with the same thickness symmetrical airfoil.
Oct 20, 2007, 07:00 PM
Happymcc's Avatar
Look at the picture of me holding the red and checkered plane . You will
see the Rino Rudder on the nose . I can do a flat turn and it helps a lot
when I do an axial roll .
Oct 20, 2007, 07:41 PM
Registered User

Rino Rudder

Alright, I'll bite, where does it move and does it use the rudder servo or a separate channel.

Many years ago, prior to 1978 (we moved fields in that year so I can fix the date), I used a 1/4" balsa, profile canopy on a plane with a box fuselage. The canopy would let the plane knife edge forever.

I also used strakes down the side of the fuselage parallel to the air flow to increase knife edge lift. Back then I was into knife edge experiments.
Oct 20, 2007, 08:09 PM
Happymcc's Avatar

Rino Rudder

I love Plank wings but I missed having a rudder . I have put a rudder
on the vertical fin and it didn't do anything on my plane .
At SEFF a couple years ago I ran into an Aeronautical Engineer .
I got him into a discussion about putting a rudder on the nose of my
plane . He told me that it has been done and gave me an idea where
to start as far as the size goes and called it a Rino Rudder . This is
the only time I have ever heard the name and I have searched the
internet and not really found anything .
What I can tell you is that it works . It is hooked up to the rudder
( nose wheel ) servo . It is not only acting as a Rudder but it is right
behind the prop and is thrust vectoring also .

Another thing I have done to a Plank was with a Plank glider , I put flaps
on it . Found them in a Plank glider plan in an old Model Aviation mag .
I really like my constant cord Plank but I think I am going to tapper the
trailing edge on my next one .
Oct 20, 2007, 08:15 PM
Registered User

Rino Rudder

Morris Hobbies had a kit called Double Fin. It had a rudder in the front. I also think Lanier had one, too. They were early 3D planes before the term "3D" was coined.
Oct 20, 2007, 08:31 PM
Happymcc's Avatar
Just checked that out and they still have the Double Fin .
And you are right it is a 3D type plane .
My thoughts on the Rino are that next time I will just extent the Rudder
arm above the Fuse and try it above and below the nose of the plane .

Canard Addict is a friend of mine , this is one of his planes .
Last edited by Happymcc; Oct 20, 2007 at 08:39 PM.
Oct 22, 2007, 09:58 PM
Registered User

Forward rudder

There is another one I found, the Lanier Double Trouble. I guess there's nothing new under the sun, as they say.
Jan 25, 2008, 06:06 AM
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Claude G. Vest's Avatar

Neil Alexander Sent me these pictures of Simitars

And variants.

Feb 28, 2008, 09:05 PM
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madstick cliff's Avatar

Simitar Centron slope flyer

Thought I'd share a pic and video of my Centron. My Dad pick it up from lady who came in to the hobby shop looking to sell some of her late husbands slopegliders. Which included this, a Bob Martin Coyote and one other I haven't found the name of. All for $125.00!! Well I got this one up and flying 1st. It took very little work to put new radio gear in. I removed the mechanical mixing and put the servos in the wing. It flys better than any of my other foamy wings, much stabler.
Here is a link to the video:

Last edited by madstick cliff; Feb 29, 2008 at 09:08 PM.
Mar 10, 2008, 08:03 PM
Registered User
Claude G. Vest's Avatar

Newly Completed Simitar Colt 45, my own design.

Still not quite finished with the radio installation.

Power Super Tigre .45 ABC 8 oz fuel tank.

Wingspan 45.5 inches

Length 35.5 inches

Weight ? scale broken

Finish True Red, Yellow, and checkerboard Ultra-Cote, Stickers from .

This is my own design, I was going to build larger model but I got the idea for a Simitar plane that looked like it could go really fast. I don't know if I'll put a canopy on it or not. I took a set of wings and cut them down so I'd end up with about 45" wingspan. I bought a Super Tigre .45 ABC just to see how it compared to my OS .46 AX. The Super Tigre turns a 10x8 prop 1100 RPM faster than my OS. (and half the cost of the OS)

Model is not test flown as yet, am waiting for the flying field to dry out enough that I won't need floats.

Will post flying results when weather permitts.

Tight Turns,


P.S. Hey everybody!, What have you been building this winter? Post those Simitar pictures!
Last edited by Claude G. Vest; Mar 10, 2008 at 08:15 PM.
Mar 11, 2008, 07:14 AM
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Strykaas's Avatar
Mar 14, 2008, 08:49 PM
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agfrag's Avatar

A couple of my Zipity Do Da inspired planes

Hi all, I was inspired by a photo in the last AMA magazine of a Zipity Do Da, and since then, I have constructed two of them! What a blast! The red and black is a pretty straight forward Zipity, wing span of 31 inches, and the blue and white is my attempt at a Zipity pusher that has a couple small canard wings on the front. The wingspan is 40 inches on the pusher.

They both fly great, the puller is a fast or slow very well tempered flier, and the pusher, which maidened tonight, is a nice slow glider. What a great versitile design.
Last edited by agfrag; Mar 15, 2008 at 10:49 AM. Reason: typo
Mar 14, 2008, 10:55 PM
Registered User
N1EDM's Avatar
Very interesting.... do they use the generic Scimitar airfoil???

Also, for the canard, I have two questions....

1. Where does it balance?

2. Would you have preferred a larger canard for tighter turns?


Mar 15, 2008, 10:57 AM
Registered User
agfrag's Avatar
N1EDM, Bob. Yes you are correct, it is the generic Scimitar airfoil. It balances just under the first stringer, about 1 inch in from the leading edge or less. I dunno about the tighter turns, but I had it out this morning, and one of the things I thought was odd compared to a 'regular' plane, is that the turns were rather rudder like. The nose tended to pull slightly up in a turn, I think. The turns could be really tight too, but then again, I am probably comparing this to my Zagi style flying wings, which I have the most experience on! So as to a larger canard, I really can't say. However, my canard is stationary, and there is no rudder control, just elevons.

Nice flyer, went out earlier today, and I got 35 minutes on a 1250 mah 2S LiPo, and it was just below freezing this morning.

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