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        Build Log Piper PA8 skycycle

#1 mintie Mar 02, 2012 10:07 PM

Piper PA8 skycycle
 
11 Attachment(s)
Piper built one in 1947 and it was burnt in a garage fire in 1948.Two replica have been built since and I am building it to near on 1/6 scale.
I found a peanut scale pencil drawn plan on line so enlarged it at work to 37 in w/s and using it for all the out lines on my build.
The construction is my usual of white , blue foam,depron,carbon fiber,and the odd bit of balsa and ply where needed and covered with news print. and paint.
Power is to be a turnigy 1050kv motor,18 amp ESC,four HTX 900 servos and a 1300 3s battery. All of this gear I have sitting in my draw.
Today I made some of the fuse templates and have the center part of the pod all cut ready to glue.
With my current builds done this way,I have had interest in the constuction so decided to do a complete log over the next few months of this wee plane.

#2 maurice076 Mar 02, 2012 10:39 PM

Looking good keep it up:)

#3 gmwahl Mar 05, 2012 09:24 PM

Hey mintie, are those card stock or cardboard templates? I'm excited to see a build log on this one. Been wanting to watch how you make those planes look soooo good!:D

#4 mintie Mar 06, 2012 01:56 AM

gmwahl.....the card you see is just cereal box cardboard .This is how I recycle all our boxes by using them as templates first.
Very cheap and handy.
I did a bit more today and will post pics tomorrow evening when I am back on the build.
cheers

#5 mintie Mar 10, 2012 07:10 PM

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Not as much progress as planned,but a bit more to report..Have been gluing up all the blue foam bits for both the cowl and canopy molds.
Now have all the fuse sections glued together and it reminds me of a tadpole. Cut out the cockpit area , fitted the first part of the fire wall and making the motor mount.

#6 mintie Mar 17, 2012 10:13 PM

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Have managed to get a bit done inbetween more study. Modelling is a good release for the brain.
The motor mount is now complete and it fits the fire wall just right.
The cowl is the next item I have been working on and tried a mock up to see if I was on the right track. pretty happy just now needs a bit of refining ,then ready to pull a finished cowl.
Wings will be next with two foam cores.

#7 mintie Apr 21, 2012 12:34 AM

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sorry for the delay on any postings for this build.
Over the last few weeks it has been full on with computor problems ,heaps of study for up and coming exams,and a few days away.
To day managed a bit more so will post and try and keep the interest up.
Now have the tail feathers all cut and temp fitted to gether,two wing foam cores,and the cowl as I want it.
Under cart will be next with the legs and mounting blocks,
.Will post more as it happens cheers.

#8 toki891 Apr 21, 2012 01:52 AM

wow! im loving how you did that fuse. looks great!

#9 Rusty-Gunn Apr 21, 2012 02:08 AM

Very cool.

#10 evbragt Apr 21, 2012 04:44 AM

Nice!

Both Piper and the Carlson replica were planning to enlarge the taifeathers by 20% after the first build.
Did you keep the tailfeathers the original size of or did you enlarge them?

I like your cowling solution, never seen it done this way before. Nice example of thinking outside the box.
I presume the lower part is glued to the fuselage?

what dihedral will be on the main wing?

#11 mintie Apr 21, 2012 04:47 PM

Quote:

Originally Posted by evbragt (Post 21393350)
Nice!

Both Piper and the Carlson replica were planning to enlarge the taifeathers by 20% after the first build.
Did you keep the tailfeathers the original size of or did you enlarge them?

I like your cowling solution, never seen it done this way before. Nice example of thinking outside the box.
I presume the lower part is glued to the fuselage?

what dihedral will be on the main wing?

Thanks for the comments.....in answer to the questions.... I have enlarged the tail feathers about 20% both fin & rudder along with the elevators and stabilater

All the cowl sections are now glued to the fire wall except the front section that you see removed in the pic. I figured this would make a neater front end and still give access to the motor and ESC.
The removeable section will have the dummy engine cylinders fitted to it.

The dihedral is round 7deg both sides. The center line of the wing tips are 65mm above the root rib center line.

#12 mintie Apr 25, 2012 04:36 AM

4 Attachment(s)
A nice day to day to work on the PA 8
Fitted the tail feathers to see what it looks like.
Made up a pair of undercart mounts and some wire legs.
Mounts are all glued in and the wires fitted ,now need to make up a pair of fiberglass clamps.
Put an air duct into the top cowl in the scale position and it puts ram air right onto the motor.

#13 mintie Apr 28, 2012 10:22 PM

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Tail wheel all sorted....doing a pull-pull cable for the rudder and tail wheel
The servo will drive the tail wheel with two very fine stainless cables and the rod goes up through a nylon bearing into the rudder.
Wings all spackelled and just need a light sand
The next job is to news print cover both wings.
Stay tuned.

#14 mintie May 04, 2012 03:44 AM

4 Attachment(s)
Have started skinning one of the wings,and the rear of the fuse.
All this work is done with news print and thinned PVA glue.
The first two sections are in this post.
The first layer follows the line of where a spar would be.This is only a strip section done on the top and bottom.
The second layer follows around the similar line as the wing out line,again top and bottom.
It is important to try and cut matching sets for both top and bottom and both wings.
We want both wings to finish at approx.the same weight.
This is now set up to dry.Stand the wing on its leading edge until dry..
Pic show all this...Next will be the final sections.

#15 mintie May 10, 2012 03:27 AM

3 Attachment(s)
more wing covering today.
The second wing now has the first two coverings on and the first wing with the last set on.
I allways stand the wings vertical,this way both sides dry evenly and I have had no twisting or bending in any of the wings that I have built.
Just the tissue on the tips to go.
Pressed up a pair of small metal clamps to hold the undercart wires on.Made these from a bit of a bake bean tin.


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