alex5

One thing that 3d cad is good for,and takes very little time to learn,is how to take images(that means drawings or photos(called vector graphics,and bit maps, like jpegs)and put them in 3d space,then scale them.That doesn't mean you have to learn the whole program.It is like cutting up your plan in photoshop,or paint,then gluing it on a virtual cube.It is great for seeing disparities in dimensions and scale,because you can super-impose different images on top of them to insure(like your strut placement) that you have the correct location.Just learn to draw staight lines,and you can create datum points and references.Everything else can happen ,a little bit at a time.
If you need help,take a pic of the vertical view,and a horizontal view pick,at the same height,send them,and I will overlay them..Maybe,there is something in the plan that you are not seeing.,or,on the other hand,maybe the drawing is incorrect...but usually,it is never that bad.We retired guys got nothing better to do than move dust around.

alex5

what is your overall length of fuse,I can check the schematic I have,scale it to your fuse dimension,and I should be able to come to a dimension(based on references)Alex

alex5

The full size plane has a dimension of 12.54 +/- .25 inches to the bottom of the strut,not including fairing,from the top of the v step,behind the wing..The width of the line is a slight issue.

alex5

that was with a hull of 781.75 inches.

alex5

Scaling your plan ,to a 96 inch wing,gives 3/4 of an inch from bottom of the strut,to the top of the step at the back,behind the wing.It would lead to thinking the frontal view,is correct enough,provided your drawing is scaled correctly.

splinterz25

Alex look on page 1 of this build thread all of the drawings are there please feel free to do any figuring or calculating
you want I will be interested to see what you come up with.

Well I made 2 male insert for the beaching gear today now on to the oleo and back plate.

Bruce

alex5

as I said ,Bruce.When I scale your photo of the plan,it's 3/4 " from the top of the rear step to the bottom of the strut...so just draw a horizontal line fromthe top of the rear step.Your strut should intersect the body 3/4 of an inch up from that line.Put a pencil mark on your plan,and measure from the bottom of the vee to that.Now you have the total distance to the strut.Of course there may be slight errors,as the thickness of your plan lines has a slight bearing on measurement,when the image is scaled.

splinterz25

It's more that 3/4" this is to hard to talk about w/ out a diagram

Well I'll continue making pieces parts today; the wheels have been ordered.

I've had some inquires about these beaching gears.

I'm trying to make them to hold the plane while not flying; they will be as close to scale as I can make them, you WON'T be able to land the plane or bring it out of the water on them.

Just for display,

alex5

now,I found that the dimension is used when measuring from the waterline,which is not parallel with the above mentioned datum lines.from the waterline,when I scale the plane to a wing of 96",including float not deployed,.the dimension is 1" to water,3.47 to bottom of keel

alex5

drawing has to be rescaled

alex5

sorry,I had to rescale the drawing.when I viewed the drawing,it had gone back to original scale.so,I scaled and saved,giving me 3.47 from the bottom of the hull,and 1 inch from the waterline.

alex5

Try that.It had not saved the re-scaled drawing,and gave me incorrect data

alex5

The front view gives me 1.07 from the waterline to the base of the bracket,but that could be false,since the waterline is not perpendicular to the view,so,at any given point on the waterline,the distance to the bracket ,on the front view,would be different.Not so,on the side view.even when I measure from ground,to the bottom of the bracket,on the front view,It gives a different dimension from that of the side view.I would suppose the best dimension would be to use that from the bottom of the hull to the bracket,since every other dimension is not focused enough,and you can sit the hull on the table and use a height gauge.

alex5

Now,I could go check my guillows,drawings,but they are for 48" wings,and I don't know how accurate they are,even though I built two Cats from them...one for display,one to fly electric(foam body sections)

alex5

The bracket is pretty much even with the spray guards on the nose,when sat on the keel.

splinterz25

I made some more pieces parts today.

alex5

those brackets are fiddly,tiny things...no wonder your hands are full of oops.I would have been prone to drilling the shaft holes,then shaping the brackets around the holes.But,sometimes,it is difficult to get the tiny details,like the wee clevise pins aligned.Seeing the real beach wheels,they are just wheel barrow wheels,on a tee shaft,with a couple of clevise pins to hold them in place.By the way,I would not solder those brackets on the wheels,until I have them in place on the plane.,and pinned.

alex5

Close to where I live,We have a warplane museum,and they have the largest collection of warplanes from the first and second WW in Canada,including a flight ready PBY5a,and one of 2 in the world Lancaster Bomber.I include a couple of images of planes in that collection. Canadian warplane Heritage Museum,Hamilton,Ontario

splinterz25

Alex I saw both of those here in the USA Virgina Beach air show two years ago when the mossie made it's first USA show.

I saw where you live just north of Niagra Falls,

Bruce

alex5

Great pics.The amphibian,is really quite agile...it takes up passengers,from it's home base,does a lot of touch and go'es.The lanc,of course has a lot of history,being capable of carrying 14000 lbs of bombs,and dropping more tonnage than any and all other bombers during the 2nd world war.When you put your head inside the bomb bay,it is like getting inside a bus,it is so huge.I had made a working model of it's undercarriage,Very much like the DC3.
Did you get a reference dimension for the beach gear bracket?.Even on your photo above,of the cat,if you draw a horizontal line from the splash guard,it comes to just below the strut...so you can get a reference,and the position of the bracket.

splinterz25

Yep got it thanks Alex

splinterz25

OKAY LET ME ANSWER THE QUESTION EVERYONE HAS ASKED FROM THE START ABOUT THIS BUILD: HOW MUCH DOES IT WEIGH????

I put it on the scale the way it is in the first photo w/ no engines 12 LBS. 12 OZ.

I'LL WEIGHT IT AGAIN WHEN I HAVE HELP ALMOST DROPPED HER DOING IT BY MYSELF.

I think I has said 18 lbs for finished weight there's no tail feathers, fuel tanks, cowlings or engines in that weight; but I don't think I'll go over 18 LBS.

I did some more on the pieces parts: finished the second clip beefed up both of them and drilled one clip plate; I need some small drill bits,

Store trip tomorrow, after my MRI ...Looks like I'm going to have rotator cuff surgery?

Not much done today very detailed work; I'm waiting to solder the top bracket until I get the correct angle, and I still need to make 2 of the top parts that hold the upper part of the locking pins.

Bruce

splinterz25

OKAY I have some more pieces parts this should help those of you who still can't see where I'm going w/ this.

But there's still a few more pieces to make before I will install; this is the prototype strut mount plus the top mount for the beaching gear.

Bruce

splinterz25

The wheels came in today and I figured out the upper strut fitting; it's not exactly scale but close, I had to solder thepieces w/ the pins in there holes to get a perfect line up.


These pieces are not finished just soldered rough filed.


This drawing shows the next part I'll make the wheel hubs & axels.


I think these wheels should work fine for this display set of beaching gear, the large main
wheels are 2" the aft wheels are 1".



Bruce

splinterz25

Well on the PBY's beaching gear I made some more progress today; there's still some bugs to work out and a few more pieces parts needed for the wheel attachment, but the general idea seems to work, have a look.

Bruce