RE: Brent Good Custom Airframes 50cc Yak 54

RE: Brent Good Custom Airframes 50cc Yak 54
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RE: Brent Good Custom Airframes 50cc Yak 54 - 2/20/2008 12:52:13 AM

Posts: 433
Joined: 3/31/2004
From: York, SC, USA
Status: offline

Looks good from a couple thousand miles away here in South Carolina! Covering is something that takes a lot of practice to get good at. This being your first build it looks fantastic! Keep the pictures coming. I am planning on flying mine the first saturday of March. My eight year old just told me that the plane looks too nice to fly. I don't think he would understand what a hangar queen is yet. I just told him that I would be carefull and not try to crash it.

Brent

< Message edited by Brent G -- 3/11/2008 4:18:16 PM >

(in reply to Stick Bender)

RE: Brent Good Custom Airframes 50cc Yak 54 - 2/20/2008 1:45:38 PM

mrbigg

Posts: 3015
Joined: 10/30/2004
From: Streator, IL, USA
Status: offline

Looks good to me Stick!

_____________________________

PROVERBS 15:22 - Plans go wrong for lack of advice; many counselors bring success.

(in reply to Brent G)

RE: Brent Good Custom Airframes 50cc Yak 54 - 2/21/2008 1:01:32 AM

Posts: 134
Joined: 6/18/2005
From: Rogers, AR, USA
Status: offline

Thanks guys.

I have the turtledeck and right side of the stab done. Time to have some dinner.

The turtledeck is far from perfect, the top sheeting settled quite a bit between the stringers and formers. If anyone points it out, I will just have to remind them it is the first thing I ever sheeted. I can fix it later if it bothers me, or just order a short kit. I could do sooooo much better on the next one.

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(in reply to mrbigg)

RE: Brent Good Custom Airframes 50cc Yak 54 - 2/21/2008 2:03:41 AM

Posts: 433
Joined: 3/31/2004
From: York, SC, USA
Status: offline

Scott

Looks good. What brand of covering are you using? I got the first wing bottom done. Almost through, I am ready to be done covering!

Brent

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(in reply to Stick Bender)

RE: Brent Good Custom Airframes 50cc Yak 54 - 2/21/2008 2:40:46 AM

Posts: 134
Joined: 6/18/2005
From: Rogers, AR, USA
Status: offline

White ultracote/oracover, pretty easy to work with once you start to figure out what it wants.

Yours is looking top notch.

I need to start getting the surfaces ready.

How many rolls of covering should I need?

Here is the other side.

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(in reply to Brent G)

RE: Brent Good Custom Airframes 50cc Yak 54 - 2/21/2008 3:06:02 AM

Posts: 433
Joined: 3/31/2004
From: York, SC, USA
Status: offline

It takes almost 1 full 10 meter roll to do the whole plane in white. I prefer ultracote as well. It workd a lot better for covering curved surfaces like the wing tips. I mainly use the iron to tack it down and then I use a heat gun and a glove to shrink and smooth every thing. To do the wing tips leave plenty of extra hanging over the tip. Then use the heat gun and pull it around the tip shrining it as you go. If you get a wrinkle just keep heating and streching. It will come out.

Brent

(in reply to Stick Bender)

RE: Brent Good Custom Airframes 50cc Yak 54 - 2/22/2008 9:22:27 PM

Posts: 433
Joined: 3/31/2004
From: York, SC, USA
Status: offline

I am working on painting the cowl. The guy that laid up the cowl for us left a few pin holes that I am having to deal with. Scott I filled the holes in your cowl. I hope that you don't find too many more. If you do find some holes it is easy to prime the cowl and use glazeing putty to fill the pin holes. On mine I did not notice some of them until after I put the first color down. I just waited until the pain was almost dry and took a very fine brush and dabbed some paint into the holes. when the paint is cured I will color sand it with 2000 grit paper and clear it. That should take care of it.

Here is the first couple of colors. I still need to wet sand again where the white will go and mask it off and paint the white.

Brent

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(in reply to Brent G)

RE: Brent Good Custom Airframes 50cc Yak 54 - 2/23/2008 2:24:06 AM

Posts: 433
Joined: 3/31/2004
From: York, SC, USA
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Cowl is painted!!!!, just need to color sand and add the black pinstrips.

Brent

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(in reply to Brent G)

RE: Brent Good Custom Airframes 50cc Yak 54 - 2/24/2008 12:31:52 AM

Posts: 433
Joined: 3/31/2004
From: York, SC, USA
Status: offline

Down to 1 elevator to cover. I finished color sanding the cowl and rubbing it. It has a few very small pin holes. You have to get about 6 inches from it to see them. All in all the cowl turned out pretty nice. I spent 4 hours covering the elevator and cutting the covering for the other side. Here are some pictures.

Brent

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(in reply to Brent G)

RE: Brent Good Custom Airframes 50cc Yak 54 - 2/24/2008 11:44:03 PM

Posts: 433
Joined: 3/31/2004
From: York, SC, USA
Status: offline

Hinging

I use gorilla glue to install the hinges. I start by opening up the holes with a solidering iron. I then run a christmas tree stone in the hole to make sure that you have room for the hinge nuckle to rotate in. Use painters tape on each side of the hinge bevel. This will keep the glue from expanding out onto the covering. Cut the hole for the hinge in the tape. I spray a little water in each hole to help the urithane to activate. Lubricate the nuckel of the hinge. I use 3 and 1 oil. spead some urithane in each hole. I use a small syringe to inject glue into the hole. Put a little glue on each hinge and insert it into the hole rotating it and move it in and out. Install all the hinges in the stationary surface first. Repeat the gluing procedure for the moving surface and spead a little glue on the hinge. Install the control surface and slide it in and out over the hinges to make sure that the glue is well distributed. Move the surface full diflection both directions and use some tape to hold it while the glue cures. I move the surface a couple of times while the glue cures to make sure that every thing is alligned correctly. Once the glue is about 3/4 cured you can remove the tape and pull out the excess glue that is stuck to it. I pick out any excess glue from around the hinges once the glue has cured.

Here are some pictures.

Time to install the radio and set it up to fly this weekend.

Brent

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(in reply to Brent G)

RE: Brent Good Custom Airframes 50cc Yak 54 - 2/26/2008 1:44:12 AM

Posts: 89
Joined: 7/19/2007
From: Charlotte, NC, USA
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I like it!!!

What time you are flying, I am coming...

(in reply to Brent G)

RE: Brent Good Custom Airframes 50cc Yak 54 - 2/26/2008 2:42:11 AM

Posts: 433
Joined: 3/31/2004
From: York, SC, USA
Status: offline

Club meeting starts at 10:00. I will be flying after the meeting. I got the elevators set up tonight. I plan to set up the ailerons tomorrow.

< Message edited by Brent G -- 2/26/2008 2:43:40 AM >

(in reply to cam-flyer)

RE: Brent Good Custom Airframes 50cc Yak 54 - 2/27/2008 1:49:41 AM

Posts: 433
Joined: 3/31/2004
From: York, SC, USA
Status: offline

Installing control horns.

I start by sanding each horn where it goes into the hard point and sand the back side of the square hard point cover. I cut out the covering over the hard point smaller than the cover. Put the arms in the cover and install it in the hard point dry. Make sure that it slides in all the way and sits flush with the cover. Cut around the cover and remove the covering. I inject 30 minute epoxy with a syringe to make sure that the slot is filled. Slide the horn in and out of the slot to make sure that the epoxy is full depth and covers the horn. Apply a little epoxy to the back side of the cover. Slide the horns through the cover and install all of it through the hard point. Wipe any excess epoxy from around the cover with alcohol. Make sure that it is all setting flat and the horns are straight.

I have my elevators and ailerons set up. I ran into a small geometry issue with the ailerons. I am not sure the fix just yet. I was only able to get 45 degrees up and 40 degrees down deflection. I think the controll horns may be a little short and I am running into a straight pull before I get all the travel I want. My other planes had 40 degrees on the ailerons and it worked great. I was just hoping for a little more. I have 50 degrees up elevator and 49 degrees down. I am happy with the elevator set up. I will decide after I get some time in the air if I need to change the setup on the ailerons.

Brent

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(in reply to Brent G)

RE: Brent Good Custom Airframes 50cc Yak 54 - 2/28/2008 11:38:24 AM