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Old 08-30-2016, 08:23 PM   #11
Poppawang
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Re: Build: Dave Anderson 1/3 scale Howard Pete


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Horizontal stab and elevators are assembled.
The ribs are 1/8" x 1/4" strip glued on edge in the appropriate positions.
I used my balsa stripper and ripped a bunch of 1/4' wide strips from 1/8" thick sheet.
Used the plans to mark the positions of the strips and glued away.
This is one of those times when CA would be beneficial as using the aliphatic glues is a little time consuming. almost tedious. If you can tolerate the fumes, use CA.
Next is to sand to shape. As sanding is my least favourite task I'll start the vstab and rudder instead.

Andy
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Old 08-30-2016, 08:40 PM   #12
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Re: Build: Dave Anderson 1/3 scale Howard Pete

The vstab and rudder parts are wider than my supply of balsa sheet.
The widest I can get is typically 4"
I need an 8" width for the rudder and a 12" width for the vertical stab.
So butt join a couple 4" sheets to get the width I need before it goes on the laser.
Find a couple sheets that fit on edge well with little or no gap.
Tape them together on one side. I like using the blue masking tape. Holds well and peels off without causing any damage.
Now we have two or more sheets taped on one side which gives a hinge of sorts.
Lay down some wax paper.
Open the joint by bending at the hinge.
Run a bead of glue down the joint. Close the hinge.
place on the wax paper.
Wipe the excess glue off.
Cover with wax paper and a bunch weight. In my case some big books.

Easy as pie. now I have two new sheets.
One 8" x 36" and one 12" x 36" ready for the laser.

Andy
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Old 08-30-2016, 09:09 PM   #13
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Re: Build: Dave Anderson 1/3 scale Howard Pete

Laser cut all the pieces for the vstab and rudder.
Next stop, work bench.

Here's a quick video of the rudder core being cut.
And a pic of all the parts for the current stage.

[YOUTUBE]https://youtu.be/SalzvGQTpE4[/YOUTUBE]

Andy
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Old 08-30-2016, 10:04 PM   #14
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Re: Build: Dave Anderson 1/3 scale Howard Pete

Andrew,
that's pretty neat how the laser works...

D
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Old 08-31-2016, 10:38 AM   #15
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Re: Build: Dave Anderson 1/3 scale Howard Pete

Awesome project!! I'm following!
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Old 09-12-2016, 08:40 PM   #16
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Re: Build: Dave Anderson 1/3 scale Howard Pete

As always there are two many things going on at once to devote as much time to a build as I would prefer.
So this may not be the fastest build but I'll try to provide updates as frequently as possible.

The rudder and vstab are on the bench and I am close to finishing their assembly. same construction as the hstab and elevator.
At the same time I am preparing for the fuse which is what I will tackle next.
So for anyone interested here is a high level description of the process I follow.
First I take the digitized plans, usually PDF and convert them to jpg.
JPG because the version of TurboCad I have cannot import PDF files.
So I take the jpg from each sheet of the plans and create a separate cad file for each. separate due the size of the JPG file. Otherwise it slows my laptop down.
Once the image is imported I scale it to ensure the parts will match the plans.
Now I trace the parts on the plans in CAD, and identify the parts with their numbers and their wood sizes and type using layers.
I then export the drawing to DXF file format.
I then use a program called CamBam to open the DXF file. CamBam allows me to arrange the parts to the dimensions of the wood sheets I will use. And then assign attributes to the cutting process.
CamBam then generates the GCODE that will be used by the laser cutter to cut the parts out.
Pretty exciting huh? I actually find the process relaxing and do it all in front of the TV.

Andy
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Old 10-17-2016, 08:30 PM   #17
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Re: Build: Dave Anderson 1/3 scale Howard Pete

Ok.
Five weeks with bronchitis has prevented me from doing any building or flying.
I'm finally feeling up to getting back to the workshop without coughing my head off resulting in spraying glue all over the workbench or cutting my finger off with the scalpel. yuck.
So I'll pickup where I left off and finish the vstab and rudder and cut the first batch of fuse formers out.
Pics to come.

Andy
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Old 10-18-2016, 09:36 AM   #18
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Re: Build: Dave Anderson 1/3 scale Howard Pete

Very interesting! Thanks Andy.
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Old 11-21-2016, 09:50 AM   #19
Poppawang
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Re: Build: Dave Anderson 1/3 scale Howard Pete

Ok. A little progress.
Finished the assembly of the tail feathers.
A little slow right now as I must give priority to the kits I'm doing for other folks.
So I slip a little work on my stuff in between.
Moving on to the fuselage next.
I'll post lots of pics and descriptions.
I'm also going to put together a test stand for the Saito so I can get it all tuned up. Besides I needs to hear that 4 stroke goodness to offset this winter weather. I'll take video and post that too.

Andy
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