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RE: Skymaster T33 First flights - 5/19/2011 5:28 AM   
batareykin


 

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Hi all.
I have transferred servo and have cleaned 150 grams from a back part of a fuselage.

 

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RE: Skymaster T33 First flights - 5/19/2011 9:46 AM   
Ali



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Nice idea. That will save on the nose weight for sure.
Regards Al

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RE: Skymaster T33 First flights - 5/19/2011 6:24 PM   
Jet Jens


 

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Hi all,

three weeks ago I got my SM T-33 and as soon as I get my servos I'll start assembling.
Now my question ! Is it possible to reach the CG without lead in the nose ?
It would be great if somebody can pose some pics from installation.

Thanks

Jens

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RE: Skymaster T33 First flights - 5/21/2011 5:22 AM   
batareykin


 

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Hi all!
Thus I have provided management of an elevator.
Alexander.



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RE: Skymaster T33 First flights - 5/21/2011 11:19 PM   
K.O.


 

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I did it on my Fei Bao

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RE: Skymaster T33 First flights - 6/15/2011 11:44 AM   
batareykin


 

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Greetings to all. At last that I have collected the plane.
I prepare the plane for flight.

 

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RE: Skymaster T33 First flights - 7/24/2011 2:31 AM   
pilot tw


 

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Hi, all

this is new finished very old color scheme for A/T-33 of Taiwan airforce,.. and i like this color scheme too,

Best regards

Anton

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RE: Skymaster T33 First flights - 1/19/2012 7:56 PM   
Gonzalo38



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I finally got my plane this week and I would appreciate if you guys could share some pictures of how you have organized the interior of the plane.

Has somebody managed not to use a lot of lead in the nose in order to balance the plane ?

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RE: Skymaster T33 First flights - 1/20/2012 3:37 PM   
Jet Jens


 

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Hello Gonzalo38

here is the link to my building thread with pictures. It is in german but maybe you can use a translater.

www.rc-network.de/forum/showthread.php/266917-Baubericht-T-33-Skymaster

Final weight dry is 17,7 kg. To reach the CG at 200mm I needed 220 g lead in the nose.

Hope this helps you a little bit.

Regards.

Jens

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RE: Skymaster T33 First flights - 1/20/2012 3:49 PM   
Gonzalo38



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Jens:

Thanks for the link...... great pictures by the way.

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RE: Skymaster T33 First flights - 6/10/2012 4:54 PM   
PDR200


 

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Hi Guys,
I was just after your thoughts on what engine you would pick for the T-33?
I'm considering this as my next project, can't decide to use a 140rx or a 180rx your thoughts??

Cheers,
Paul

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RE: Skymaster T33 First flights - 6/10/2012 6:54 PM   
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Sorry for the late post but i just saw the wire setup.Not nice idea at all.

For start the way the wire is been looped is wrong. This way if it doesn't fail by slipping out it will get loose and cause flatter..
I attach a draw of the correct way to make this loop ,coming out from my hundreds hours experience on +150cc aerobatic models .Plus the lines should be X crossed and not parallel II since this is a flex link=pull/pull and not a solit link =push/pull.


Now for jet use i do NOT recoment any flex/wire links because you will get flatter .

Also the carbon links are too long not to have a support in between.

IMHO mount the servos where they suppose to be and try to place the engine further forward to help the C.G.

sorry for the poor english. Better a few grams in the nose that an elevator fail .




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RE: Skymaster T33 First flights - 6/10/2012 6:56 PM   
DelGatoGrande



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quote:

ORIGINAL: PDR200

Hi Guys,
I was just after your thoughts on what engine you would pick for the T-33?
I'm considering this as my next project, can't decide to use a 140rx or a 180rx your thoughts??

Cheers,
Paul


180

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RE: Skymaster T33 First flights - 6/10/2012 8:16 PM   
rcpete347



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HI all, I go about getting the correct CG on most of my jets a bit different than most builders, buy placing the important components where whey are most serviceable, and then moving the turbine . Example is my Futura, which the turbine was moved 2'' forward, and my T-33, about 1.5'' forward.It helps that I make my own Pipes.
Rcpete
PS. i would not hesitate to remove the restrictive air intakes.

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RE: Skymaster T33 First flights - 6/10/2012 8:48 PM   
DelGatoGrande



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quote:

ORIGINAL: rcpete347

...It helps that I make my own Pipes...




or a small extension on the rear will do the trick

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RE: Skymaster T33 First flights - 6/11/2012 3:31 AM   
K.O.


 

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180RX

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RE: Skymaster T33 First flights - 7/8/2012 11:13 AM   
Springbok Flyer


 

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Hi guys,

Now that so many of you have experience with the big Skymaster T-33, do you agree with the cg at 190 to 200mm? What bou the control throws as per the manual? What is the final realistic weight when installing all the bells and whistles?

I also notice that most are making modifications to the tip tank mountings, any more suggestions?

Thanks for your advice.

Jan

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RE: Skymaster T33 First flights - 9/2/2012 4:20 PM   
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I was finally able to maiden my plane yesterday. What a beautiful plane....... great work of Skymaster.

Maiden flight was done by Michel from www.jetsrc.com Just a few clicks and the airplane was flying straight. Actually, it seemed like the airplanes was flying on rails. Couple of rolls, inverted flying and everything went OK. When applying full flaps, only a very small nose down tendency. When trying stall speeds, the airplane doesn't drop a wing but it starts sinking fast. That happened to Michel in his first landing approach. Second approach was perfect but as soon as the plane was on the ground, the wings started rocking.

http://www.youtube.com/watch?v=ZYaMQI4zLQ4&feature=youtu.be

For the second flight I took the controls and I was amazed to see that this planes is so fast. Just half throttle and the plane is really moving. Full throttle.... and the verticals are huge. For normal flying, the plane behaves like a trainer, plus is so easy to see in the air because of those big tanks.....

I was really amazed to see how light the plane is. Haven't weighted it yet, but it is lighter tan my MB-339 and Viper Jet.

Just thinking if a Giro can help with the wing rocking issue during the landing. In the meanwhile, I'm going to install some fiber carbon tips under the tanks in order not to scratch them

Besides the wing rocking at landing, the plane has no bad tendencies. When turning, it doesn't drop the nose like my MB-339 so keeping it at the same flight level is really easy.

In general...... very happy with the plane. Plus is great to see something that is not the typical modern fighting jet.

I equipped mine with a Jetcentral Rhino, JR 8711 servos, Power Box Royal, Futaba receivers and a Airpower 5 EVO air valve. Everything worked great.

CG was at 190 mm and very little lead was needed in the nose. I will try to take some more detailed pictures next week.

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< Message edited by Gonzalo38 -- 9/2/2012 4:44 PM >


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RE: Skymaster T33 First flights - 9/2/2012 6:30 PM   
dubd



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Congrats on the successful maiden! How does the T-33 compare to your Tutor?

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RE: Skymaster T33 First flights - 9/3/2012 12:04 AM   
Gonzalo38



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Dubd:

The Tutor is still not ready so I can't compare both planes.

I still think that the Tutor will be an easier plane to fly (specially because of the landing) but if you are looking for a truly scale plane, the T-33 should be the choice.

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RE: Skymaster T33 First flights - 9/3/2012 5:37 AM   
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Gonzalo38,

I think the wing walking that you are referring to is only on the ground - correct? If so, I believe the problem is under carriage and /or wheel alignment related. First, if the oleo pressures are too low then the plane will rock side-to-side like that when direction changes take place. Second, if the nose wheel is under load, like with heavy braking or when the plane has a negative AOA on the ground, you can induce that kind of wing walking with nose wheel direction changes. Finally, and this is what I suspect, your wheels are aligned slightly toe-out, perhaps more so when the under carriage is under load, which translates into an occilation from side to side as first one wheel and then the other let's go from tracking outwards. May I suggest you try two things before you try to 'fix' the problem with a gyro of sorts;

- give the main wheels a bit of toe-in.
- get the nose to stand a little higher.

If that still don't help, increase the oleo pressures in all the oleos.

Hope you find a solution mate.

Cheers,

JanR

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RE: Skymaster T33 First flights - 9/3/2012 1:15 PM   
Gonzalo38



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JanR:

Thanks for your comments. You are right..... this only happens when slowing down in landing.

I will check the plane and make sure that I have a little bit of toe in. The nose is already standing higher so that is not the reason for the problem.

This plane has long wings and the big tanks on the tips are maybe the cause for the plane wanting to rock (plus the very narrow landing gear).

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RE: Skymaster T33 First flights - 9/4/2012 1:26 AM   
pilot tw


 

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Hi, Gonzalo38

Congratulatition!! for your T-33 maiden flight!!

Best Regards

Anton

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RE: Skymaster T33 First flights - 9/4/2012 1:29 AM   
Gonzalo38



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Thanks Anton.

You did a fantastic job with this plane. Now I'm waiting for my Hawk to be ready and for my new A-10.

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RE: Skymaster T33 First flights - 9/11/2012 9:58 AM   
pilot tw


 

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T-33 new color scheme for Taiwan Airforce powered by K-180...

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