RE: Andy Sheber Pitts s1s

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RE: Andy Sheber Pitts s1s - 12/17/2012 12:50 AM

straitnickel

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Sounds good

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RE: Andy Sheber Pitts s1s - 12/17/2012 1:49 AM

acerc

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Well, I change my mind. After pouring over photo's I have realized doing it that way would leave an opening between the wing and gear. That would not look right. And believe it or not my wife gave me a great idea. I am going to make the belly pan to cover from the rear of the wing to the front of the fuse. Then I can just make the gear removeable. I think this will work best and keep the look's as is.

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RE: Andy Sheber Pitts s1s - 12/17/2012 3:12 AM

acerc

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I took some preformed gear I have for another plane and put it in place on the Pitts. Looks like the removeable pan will work out great. Now that I have that figured out I can get back to work on it.

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RE: Andy Sheber Pitts s1s - 12/17/2012 9:37 AM

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Robert, is there any pictures of my TC pitts that i can post to maybe give you some ideas that you can adapt to suit your own needs. At the moment i have the cowl and the bottom of the fusalage (between the top of the undercarrage) off the model as i'm re-routing the lines for the smoke system ?

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RE: Andy Sheber Pitts s1s - 12/17/2012 12:00 PM

RickBoyer

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Hi Ken,

I have a set of Andy Sheber 1/4 scale Pitts S-2A plans (wingspan of 60"). The model was designed around a .90 two stroke/ 1.20 four stroke.

Rick Boyer

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RE: Andy Sheber Pitts s1s - 12/17/2012 1:23 PM

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I love the Pitts...wish there was a smaller version that would take a 60-90 two stroke.
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RE: Andy Sheber Pitts s1s - 12/17/2012 1:49 PM

acerc

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Actually JJ their is. One from the front, of the bottom. Showing the contour of the belly area between the gear.

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RE: Andy Sheber Pitts s1s - 12/17/2012 2:54 PM

acerc

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After all that fuss on the wing/gear issue I feel I need to explain a little. First off these plans are excellently drawn. There is nothing wrong with the design of the plans what so ever. I just know me, and I know with the pivoting gear it would not be long before I did something stooped and broke something. That is the only reason I am making them removable.

DGUY these plans could be reduced to a 60-90 size very easily. I bet you could even get them that way.

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RE: Andy Sheber Pitts s1s - 12/17/2012 3:09 PM

john josey

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quote:

ORIGINAL: acerc

Actually JJ their is. One from the front, of the bottom. Showing the contour of the belly area between the gear.

No problem Robert. Taking them from the front didnt really show that well but i think these will tell you what your looking for (hopefully)

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RE: Andy Sheber Pitts s1s - 12/17/2012 3:41 PM

acerc

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Thank's JJ. That is what I'm going with only it will be a one piece. I feel better now.

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RE: Andy Sheber Pitts s1s - 12/17/2012 3:50 PM

john josey

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quote:

ORIGINAL: acerc

Thank's JJ. That is what I'm going with only it will be a one piece. I feel better now.

Happy to help. If theres any other pictures you think might help along the way just let me know.

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RE: Andy Sheber Pitts s1s - 12/17/2012 4:50 PM

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Hi Robert. Where did you get the plans from?

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RE: Andy Sheber Pitts s1s - 12/17/2012 5:29 PM

acerc

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The firewall and top half formers are in and drying.
The plans call for 0degs thrust angles on the engine, the wing's call for 0degs incedence, and the stab has zero in print but measures out at 2degs.
Any comment's on these numbers?

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RE: Andy Sheber Pitts s1s - 12/17/2012 5:35 PM

RickBoyer

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Hey Robert,

You definitely want to build the Sheber Pitts S-1S with 0 degrees of incidence on both wings and 1 1/2 to 2 degrees of positive incidence on the stabilizer along with at least 1 degree of right thrust on the engine due to tork.

Both of mine flew with near perfect trim with this setup.

Rick Boyer

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RE: Andy Sheber Pitts s1s - 12/17/2012 5:40 PM

rs917

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Nice work Robert. Either you're a fast builder, or I've overestimated the amount of time it takes to build a kit like this. Either way, nice looking plane so far.

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RE: Andy Sheber Pitts s1s - 12/17/2012 6:15 PM

acerc

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Thank's Rick! That is what I'll do.

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RE: Andy Sheber Pitts s1s - 12/17/2012 6:34 PM

straitnickel

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On the incidence question, I had a bme challenger witch called for a positive incidence in the top wing I went with zero and it flew just fine. If you have a real flight simulator, there is an blue ultimate plane in the sim. that the incidence in the wing and tail that can be changed to what ever value posative or negative you would like. I did this and zero was my choice top, bottom and back.

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RE: Andy Sheber Pitts s1s - 12/17/2012 7:53 PM

john josey

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My TCpitts has 0 for both wings, +2 for the stab and 2deg right thrust on the engine which seems to stack up with the others

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RE: Andy Sheber Pitts s1s - 12/17/2012 8:00 PM

john josey

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Robert, while i remember, my own pitts has 5mm or 3/16" of right rudder. Something to do with the propwash was the explanation.

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RE: Andy Sheber Pitts s1s - 12/17/2012 10:15 PM

acerc

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Thank's to everyone for their input on all the angles.
Something interesting thought I'd share. I called the manufacturer and their specs on the angles are, Engine thrust 0-0, stab incedence +2degs, fin 0, and the wing's T&B +1.5degs. I do understand why the full scale would have + on the wing's.
Anyhow, I have built the engine mount box, the top stringers are on, and I put in the ele & rud servo mount ply. In the morning when I can install the engine mount I will post pics. I have also cut up all the laminating ply for the ele, rud, and wing tips. Can't go no further untill some epoxy dries.

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RE: Andy Sheber Pitts s1s - 12/17/2012 10:34 PM

john josey

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Your cracking on well Robert. I was nine months with mine and that was a kit ! I can see you having this thing done for the start of spring !

You've got me thinking....I've never owned a twin and i've been kind of looking at this - http://www.glensmodels.com/2005.htm

Sorry, the link is just taking you to the home page, the engine is the Zenoah 80 twin

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RE: Andy Sheber Pitts s1s - 12/17/2012 10:37 PM

acerc

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A friend at my field has this same engine in a Yk. It is unreal!

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RE: Andy Sheber Pitts s1s - 12/17/2012 10:43 PM

john josey

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quote:

ORIGINAL: acerc

A friend at my field has this same engine in a Yk. It is unreal!

Just so much smoother

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RE: Andy Sheber Pitts s1s - 12/17/2012 10:46 PM

acerc

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That they are.

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Post #: 124

RE: Andy Sheber Pitts s1s - 12/18/2012 12:05 AM

john josey

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quote:

ORIGINAL: RickBoyer

Hey Robert,

You definitely want to build the Sheber Pitts S-1S with 0 degrees of incidence on both wings and 1 1/2 to 2 degrees of positive incidence on the stabilizer along with at least 1 degree of right thrust on the engine due to tork.

Both of mine flew with near perfect trim with this setup.

Rick Boyer

Top Gun 2004 to 2012
Pitts Special S-1S (#1)
Ryan STA
Pitts Special S-1S (#2)

Rick, do you have any detailed pictures of the cockpit and more importantly, the size from the seat to the turtle deck at the pilots head ? from what i can see, the size of a 1/3 scale pilot is 300mm/12" from the seated position to his head and if that is the case i could be in trouble !

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