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AMR 33% Waco YMF-5 Build

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AMR 33% Waco YMF-5 Build

Old 01-10-2009, 07:26 PM
  #301  
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Default RE: AMR 33% Waco YMF-5 Build

Bob,
You have to make the fairing a seperate piece and screw it to the pant, this is how I did my 25% Waco. I may carve them out of foam and put 2 layers of 3oz cloth. I am puzzled as to how to handle the fairing at the fuse/gear joint.
Here is a pic of my 25% with the landing gear/pant fairing. There is about a dozen #0 screws holding it to the pant, it just slips over the gear leg. I purchased the cowl,pants and fairings from Barth for my 25%.
Later!!
Anthony
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Old 01-10-2009, 09:31 PM
  #302  
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Default RE: AMR 33% Waco YMF-5 Build

Been a productive day on the Waco, nice to get some hours in on it again.
The landing gear is sheeted and I will let that dry overnight. I used Gorrila glue to glue the balsa sheeting to the aluminum gear. I have to go into work in the morning and check up on a few jobs then I will get back to work on the Waco. I will sand the sheeting and add the caps to the edge of the gear and sand to shape. I will then be able to add the bottom front formers and sheeting. I have alot of detail stuff to start thinking about.
Anthony
Old 01-11-2009, 06:30 AM
  #303  
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Default RE: AMR 33% Waco YMF-5 Build

Anthony,

A few questions here:

1. Does the AMR kit have the main spar at the 12% location, or did they screw up like Pica and some others?

2. Does the rib plan make the wing too chubby as the others are?

3. Is the leading edge in the wing center line, or at the correct 25% from the bottom?

4. Have you got your tip profile finalized?

5. Are the ribs taller than the main spar, allowing the capstrips to not show a little bump at the spar?

I have had to completely redesign the wing on my fifth scale, and it is looking a lot better. The drawing process for the new 27% version is coming along, and since I have a set of the original factory plans for the YMF, it makes things a little easier to follow. This one will be dead-nuts on the money.

Bill, Waco Brother #1
Old 01-11-2009, 10:02 AM
  #304  
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Default RE: AMR 33% Waco YMF-5 Build

Bill,
Alot of questions
#1 the spar is at 16%
#2 The wing appears to be the proper thickness except the last 4 ribs.
#3 The L/E centerline appears to be at 33% from the bottom.
#4 My tips need a little more adjustment on the bottom side of the 2nd rib from the tip. I will do this before covering.
#5 The spar sits flush with the top of the ribs and I actually removed a little material on top of the spar at the rib to assure no interference(bump).
#6 Sign me up for a copy of those 27% plans when you get them finished You can never have too many Waco's, I am thinking about getting a Dumas Waco and converting it to an electric R/C.
May I suggest that if you go 27% that you make plugs for the turtle deck, fin and wing fairings, pants, cowl, nose bowl and landing gear fairing and get one of the fiberglass operations to produce the parts.
The fiberglass parts on my AMR Waco are very nice and will take alot of the work out.
Later!!
Anthony
Old 01-11-2009, 10:12 AM
  #305  
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Default RE: AMR 33% Waco YMF-5 Build

Bob,

Here are a couple of pics of the wheel pant to gear leg cuff that may help. The cuffs are for different Wacos but the concept is the same.

P1 - Fiberglass reproduction for Waco YKS NC 17457. The notch is for the center strut which attaches below the axel.
P2 - Close up of the cuff installed on Waco YMF Classic NC 14081. The center strut attaches to the gear leg above the axel.
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Old 01-11-2009, 10:49 AM
  #306  
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Default RE: AMR 33% Waco YMF-5 Build

Nice pics John, Maybe you can get them to reproduce a couple sets for us in 1/3
Bob,
These parts are available in 33% from Peter Barth in Germany. The 25% fiberglass parts that I bought from him were of great quality.
Anthony
Old 01-11-2009, 12:09 PM
  #307  
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Default RE: AMR 33% Waco YMF-5 Build

Anthony, here is my Dumas YMF-5.

I'm leaving in about an hour for the field to fly my Pepino Waco. The weather is beautiful today.
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Old 01-11-2009, 12:48 PM
  #308  
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Default RE: AMR 33% Waco YMF-5 Build

Hi Ken,
How does the Dumas Waco fly? Have fun flying today, it is in the 20's here today and spitting snow[]
Anthony
Old 01-11-2009, 01:04 PM
  #309  
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Default RE: AMR 33% Waco YMF-5 Build

John,

Thanks for the photos and information on the fairings. I am planning on doing some restoration work on my 33% this winter. Its got a few battle scars. I'll try to either mold some or get in touch with Herr Barth to see if he has them for this scale.

This also gives me some ideas for my Model 44. The landing gear from AMR is really basic and I have made scale gear struts, but haven't figured out how to do a reasonable fairing. I just got finished making a new 19" cowl, so pant fairings shouldn't be that big a deal.
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Old 01-11-2009, 03:29 PM
  #310  
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Default RE: AMR 33% Waco YMF-5 Build

I finished up the landing gear, well almost. I got a little carried away on the 1st side shaping the edges where it meets the fuse and I will have to splice in another piece of wood
I remounted the gear and put the formers in at the top of the gear and the stringer. This area will get sheeted next.
Later!
Anthony
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Old 01-11-2009, 04:11 PM
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Default RE: AMR 33% Waco YMF-5 Build

Anthony,

Take a look at these pictures of the Landing Gear Fairing on the 1987 Waco YMF Classic NC 14081. Note that the rear edge is behind the leading edge of the wing.

P1 - NC 14081 on taxi to the fuel pumps. This shot also shows the dehidral the Wacos have.
P2 - Close up af the LG fairing. Also note how the leading edge wing to fuselage fairing wraps around.

The National Waco Club site http://www.nationalwacoclub.com/f3f5album/ has other pictures of the fairings. The wing/fuselage fairing is different on the original YMFs ending one stringer lower and a little further back at the trailing edge then the current production YMFs.
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Old 01-11-2009, 04:29 PM
  #312  
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Default RE: AMR 33% Waco YMF-5 Build

You will notice the landing gear fairing and the wing fairing join together and the fuse skin also overlaps onto the landing gear fairing. This is very difficult to replicate and more than I am willing to tackle. I will make it look good but 100% scale is not really an option.
Anthony
Old 01-11-2009, 04:59 PM
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Default RE: AMR 33% Waco YMF-5 Build

Anthony,

I understand how the fuselage skin, gear and wing fairings fit and how they are difficult to replicate on a model. Especially when there are not any commercially scale functioning landing gear available that work and hold up. If I remember correctly the AMR gear is skeletonized sheet aluminum and will flex at the fuselage/gear joint. I didn't want you to get too far along and have to do things over to get it right. Most people will not know or notice your modification.
Old 01-11-2009, 05:38 PM
  #314  
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Default RE: AMR 33% Waco YMF-5 Build

You are correct about the gear, you just about have to have a functioning strut gear to do it correctly. You would also have to lay up some fiberglass panels or bend aluminum and that is way too much work
Anthony
Old 01-15-2009, 05:02 PM
  #315  
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Default RE: AMR 33% Waco YMF-5 Build

Hey Anthoney I'm follwoing your thread with a lot of interest. I just received my 33% Waco this week and will start the build on it in a couple of weeks. I'm sure the info on this thread is going to come in very handy when I start. Your WACO is looking awesome. Keep up the good work.
Lonnie
Old 01-15-2009, 06:26 PM
  #316  
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Default RE: AMR 33% Waco YMF-5 Build

Hi Lonnie,
You will enjoy the build, please feel free to join in and build along. I will help you in any way I can.
Anthony
Old 01-15-2009, 06:46 PM
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Default RE: AMR 33% Waco YMF-5 Build

Hey Anthony. I'll be sure to do that. I'll try to not be to much of a pest. I have built a lot of kits, but nothing this size.

Lonnie
Old 01-15-2009, 06:49 PM
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Default RE: AMR 33% Waco YMF-5 Build

Lonnie,
I see you are from Tennesse, my whole family is from Tennesse and my dad lives in Clarkrange. Not sure how far that is from where you are at. I also have alot of family in Crossville.
Anthony
Old 01-15-2009, 06:56 PM
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Default RE: AMR 33% Waco YMF-5 Build

I live right outside of Nashvillle in Hendersonville. I'm the President of the Hendersonville RC Club. Grew up in Oak Ridge. The temp here is going down to around zero and I have no heat in my shop so I have to wait until it warms up a bit before I can start my build. I see you have done a lot of work in a short period of time. Hope I can move that fast. I'm going to hang a DA 150 on the front end along with smoke. Will build it after the Waco documented by Air Borne Media. When do you think you will have some more updates on yours.

Lonnie
Old 01-15-2009, 08:23 PM
  #320  
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Default RE: AMR 33% Waco YMF-5 Build


ORIGINAL: lrayj

Hey Anthony. I'll be sure to do that. I'll try to not be to much of a pest. I have built a lot of kits, but nothing this size.

Lonnie
Go ahead and pester him Lonnie. He likes it. I'm building the 42% Super Decathlon from AMR.
Old 01-15-2009, 09:01 PM
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Default RE: AMR 33% Waco YMF-5 Build

Lonnie,
I am off work tomorrow and should get some work done on the Waco once I get some banking taken care of. The Waco goes together well and the big pile of lumber will start turning into a Waco pretty quick once you get started. Ken has a very impressive build in the Giant Scale forum if you haven't seen it. He does a bang up job for an old guy
I should be posting some more pics tomorrow.
Anthony
Old 01-16-2009, 03:53 PM
  #322  
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Default RE: AMR 33% Waco YMF-5 Build

I am back to working on the Waco,
I am working on the bottom wing saddle and fairing. The saddle gets 3/32" sheeting and sheeting from the saddle to the bottom stringer for the fairing support. There is also a 3/16" dowel that gets added for the corner of the saddle to a stringer aft of the saddle to support the T/E of the fairing. I am just rough fitting the fairings at this point as I am not going to attach them until after covering. I just don't think it would look right doing it otherwise. The fairings will be held on by #2 screws, I will not make any mounting holes until after covering and final fitting.
Here are a couple pics of the wing saddle area and the fairing being held in place.
Anthony
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Old 01-16-2009, 05:11 PM
  #323  
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Default RE: AMR 33% Waco YMF-5 Build

She is really looking Good Anthony. You do real nice work. I have been under the weather all week so I have not been able to do much work on the Trainer 50. Us "old guys" take time to recover.

Lonnie welcome to the AMR clan. I am doing a build on the Trainer 50. It is detailed here on RC Universe. However I work much slower than Anthony. I will however get there.
Old 01-16-2009, 08:09 PM
  #324  
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Default RE: AMR 33% Waco YMF-5 Build

Thanks Ron,
I have the wing saddles completed and I have started fitting the top hood. The hood wil be held in place with #2 screws spaced every .66" This will put the screws in a scale location with the proper spaceing. I measured out 4 screw hole locations on each side and I have temporarily mounted the hood so I can mark it up fro trimming. It needs a little taken from each side as well as about 1/8" off of the front end.
I need to cut out clearance arear for the cabane struts as well as cut out the rear cockpit. I will wait until I get further along with the finishing before cutting out the opening for the front cockpit.
Here are a few pics with the top hood fitted into place, I have also sheeted the luggage door area in preperation for laying up a door out of fiberglass.
Anthony
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Old 01-16-2009, 08:57 PM
  #325  
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Default RE: AMR 33% Waco YMF-5 Build

Calling it quits for tonight,
I have to work for 4-5 hours tomorrow then I will get back on the Waco when I get home. I plan on finishing up the installation of the hood tomorrow as well as getting the nose bowl fitted and mounted. I am running out of pages in the construction manual[8D]
Anthony

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