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Building Tips and technical articles. => ARF'S => Topic started by: Fernando on November 15, 2009, 04:13:10 AM

Title: T-Rex with PA and Pipe
Post by: Fernando on November 15, 2009, 04:13:10 AM: Hi,

I just got my new T-Rex ARF from Stunt Hobby here in Brazil.

I'm going to install a PA-65 with Pipe.

I would Like to know if some body have already put a PA with Pipe in a T-Rex ARF????

I would like to see how I install the pipe under the wing.

Tanks

Fernando - Brazil
Title: Re: T-Rex with PA and Pipe
Post by: Bob Reeves on November 15, 2009, 09:29:29 AM: One of our club members has one but he didn't document the building process. My understanding is you just start removing wood till the pipe fits then beef up the areas weakened by removing the wood for the pipe.
Title: Re: T-Rex with PA and Pipe
Post by: Fernando on November 16, 2009, 03:52:19 AM: Bob,

If you can just post some pictures of the model done, will help allot. I just want to know if He opened all the fuselage under the wing or not.

Tanks
Title: Re: T-Rex with PA and Pipe
Post by: Bradley Walker on November 16, 2009, 07:18:01 AM: Quote from: Fernando on November 16, 2009, 03:52:19 AM
I just want to know if He opened all the fuselage under the wing or not.

No do not.

Just make pocket for the very tail end of the pipe. The hole will be behind the wing saddle. The area will then need to be reinforced near the joint of the wing saddle to the fuselage. I suggest plywood triplers over the joint and them glass the entire area.

The pipe will simply insert through the front to the rear. One hold down at the very rear of the pipe is all that is needed.
Title: Re: T-Rex with PA and Pipe
Post by: Joe Gilbert on November 19, 2009, 06:57:11 AM: I just opened up the bottom of fuselage and use the bottom of wing for top of pipe tunnel and put the pipe holder on bottom of wing, sealed up all and let air go out at back of pipe. I put in a tunnel from the back wing joint about three inches long.
Title: Re: T-Rex with PA and Pipe
Post by: Luiz Dutra on November 23, 2009, 09:34:04 AM: Quote from: Fernando on November 15, 2009, 04:13:10 AM
Hi,

I just got my new T-Rex ARF from Stunt Hobby here in Brazil.

I'm going to install a PA-65 with Pipe.

I would Like to know if some body have already put a PA with Pipe in a T-Rex ARF????

I would like to see how I install the pipe under the wing.

Tanks

Fernando - Brazil

Fernandinho,
Do you like the quality of the T-Rex kit and weight.... will it be below 65 OZ with the Pa 65 and with correct CG? I intend to start a model with Electrical powered engine and the ARC T-rex should work. best regards, Luiz Dutra - Mococa/SP- Brazil
Title: Re: T-Rex with PA and Pipe
Post by: Elwyn Aud on November 27, 2009, 06:06:18 PM: Quote from: Fernando on November 16, 2009, 03:52:19 AM
Bob,

If you can just post some pictures of the model done, will help allot. I just want to know if He opened all the fuselage under the wing or not.

Tanks
Here ya go.
Title: Re: T-Rex with PA and Pipe
Post by: Fernando on November 29, 2009, 06:34:04 PM: Elwyn Aud

Tank you for the picture..........

Fernando
Title: Re: T-Rex with PA and Pipe
Post by: Fernando on December 10, 2009, 06:11:59 PM: Hi,

Here is some pictures of my T-Rex finished with Pipe and removable wing.

Fernando - Brazil
Title: Re: T-Rex with PA and Pipe
Post by: Fernando on December 10, 2009, 06:13:38 PM: More pictures...................
Title: Re: T-Rex with PA and Pipe
Post by: Fernando on December 10, 2009, 06:14:56 PM: and more.............
Title: Re: T-Rex with PA and Pipe
Post by: Joe Gilbert on December 19, 2009, 01:06:40 PM: Outstanding Fernando well done
Title: Re: T-Rex with PA and Pipe
Post by: Bradley Walker on December 21, 2009, 11:26:29 AM: Quote from: Joe Gilbert on December 19, 2009, 01:06:40 PM
Outstanding Fernando well done

No kidding.

Could you show more on the removeable wing?
Title: Re: T-Rex with PA and Pipe
Post by: Rudy Taube on December 22, 2009, 03:01:46 PM: Hi Fernando,

Thank you for all the great photos of your neat installation.

Do you have any photos of the wing take apart? I like your method, it is better than the method I was going to use.

Thanks again for sharing your ideas with us. :)

PS: Bradley, beautiful design, and an outstanding ARC/ARF. I hope you asked your question because you plan on making your next wonderful offering with a removeable wing and tail? ;)

Regards, H^^
Title: Re: T-Rex with PA and Pipe
Post by: Fernando on December 24, 2009, 07:03:33 AM: Rudy and Bradley,

Here is some more pictures of the plane with the wing removeable wing.

Here in Brazil We use to build almost the airplanes this way. It is better to travel longer distances.

I used 4 bolts 4-40 with blind nuts to hold the wing.

I made 2 fire wall with 1/8 plywood and pasted in the wing.

Bradley,

I loved the plane, it is great project, but I'm having problens with the flaps. They are to much flexible. I had to glue two small parts of plywood in each flap to get a little more hard flap, but probably I will build a new flap. What color is this orange?? Is it oracover???

I hope that information help.

Happy Holidays!!!!!

Fernando - Brazil
Title: Re: T-Rex with PA and Pipe
Post by: Fernando on December 24, 2009, 07:05:38 AM: More Pictures
Title: Re: T-Rex with PA and Pipe
Post by: Fernando on December 24, 2009, 07:08:14 AM: Bradley,

Here is the pictures of what I did in my flap, but they are a litlle bent.
Title: Re: T-Rex with PA and Pipe
Post by: Bradley Walker on December 24, 2009, 07:31:40 AM: Quote from: Fernando on December 24, 2009, 07:03:33 AM

They are to much flexible.

Too flexible for what? Tweaking?

Certainly not flying.
Title: Re: T-Rex with PA and Pipe
Post by: Rudy Taube on December 24, 2009, 01:23:44 PM: Hi Fernando,

Thank you for the perfect photos of your take-apart method. Your photos answered all my questions. Your method is sooooo much easier than the labor intensive method I was going to use. Very good idea, thanks! :)

Do you worry about the plastic ball link part becoming loose over time, after forcing it over the ball every time you take the wing off? ..... Here is what I will be using. I have used it in some of my RC planes but I have never used it in a CL plane yet. It seems to have a tight, smooth fit. These are very strong all metal units, they also make a less expensive plastic one that I have also used, (look near the bottom of the page for the plastic version).

http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXYCH4&P=7

BTW: Is your stab/Elevator also removable?

Thanks again for the great photos, they are a big help.

Happy Holidays H^^
Title: Re: T-Rex with PA and Pipe
Post by: Bradley Walker on December 28, 2009, 06:50:56 AM: That is so cool. ;D
Title: Re: T-Rex with PA and Pipe
Post by: Bradley Walker on December 28, 2009, 11:46:48 AM: Got this today:

Aloha Bradley,

I am Flying an ARF T-Rex with a Randy Smith PA .51 on a tuned pipe. This airplane is a superb flyer and went together well, the best plane I have ever flown. Best regards.

Happy Holidays,

Mike Wada:):)
Title: Re: T-Rex with PA and Pipe
Post by: Norvaldo on January 02, 2010, 04:18:38 PM: Fernando. Regarding your new flaps and the Oracover..
Here is from another post i made:

It just so happened that i had a roll of orange Oracover lying around with the exact color match.
In case you need to order some for repairs in the future, the code is:

Oracover Orange 21-060
Norvald