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Post  OhBee Fri Oct 30, 2020 12:08 am

How the heck do you hog this all off evenly? 5/8" square leading edge? Whats up with that?Wood removal 20201014
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Post  Oldenginerod Fri Oct 30, 2020 1:19 am

Turn the wood 45º and have one corner facing forward, one up, one down etc. That way you should only need to round off the front edge.
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Post  Oldenginerod Fri Oct 30, 2020 1:22 am

On reflection, that would depend on your rib configuration.  You really need a triangular section rather than square so that the inner face of the leading edge is perpendicular, assuming the the ribs have a vertical front edge.

All the kits I built as a kid (Aussie Areoflyte) used a square / diamond section leading edge with the front of each rib having a birds-mouth cut-out.


Last edited by Oldenginerod on Fri Oct 30, 2020 1:28 am; edited 1 time in total (Reason for editing : Additional info.)
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Post  Levent Suberk Fri Oct 30, 2020 2:21 am

Open a notch on wing ribs, then you only need to round a corner:

Wood removal Img_2044
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Post  Oldenginerod Fri Oct 30, 2020 4:38 am

@Levent Suberk wrote:Open a notch on wing ribs, then you only need to round a corner:

Wood removal Img_2044
That's exactly what I was trying to describe, but it's likely going to mean that OhBee will need to accurately modify each rib. Maybe a little closer examination of the plans needed.
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Post  706jim Fri Oct 30, 2020 10:29 am

#50 sandpaper on a long block. It actually works great and you can finish up with something finer.
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Post  OhBee Fri Oct 30, 2020 1:17 pm

Ya...this thing had squared off rib ends butted up to the leading and trailing edges. Thats the way the kit was designed and made. I'm used to slotted pre-formed leading edges!
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Post  OhBee Fri Oct 30, 2020 1:19 pm

Wood removal 20201015
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Post  OhBee Fri Oct 30, 2020 1:21 pm

Following directions to the letter, but never saw a wing built like this! Not into redesigning the kit...and it's a bit late for that!
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Post  roddie Fri Oct 30, 2020 9:49 pm

Yes.. kits can throw you some curve-balls. You expect this when building from plans.. but not a kit. Try taking a breather from it for a few days. It will "click" before too long.. and you'll get it built.
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Post  OhBee Fri Oct 30, 2020 10:06 pm

Ya...I hit a snag,or somethimg I need to ponder for awhile,and I just move on to something else for
a change ...like landing gear today. Tiny parts are becoming a challenge!
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Post  944_Jim Fri Oct 30, 2020 11:03 pm

OhBee,
A little late now, but this is where a home-made notching tool would help. Mine is an old hacksaw blade piece about 7" long, with fences super glued to either side of the blade. The fences keep the blade from cutting too deeply. If the wing is truly just a rectangle, then the leading edge and trailing edge are set side-by-side, and the rib notches are cut into both pieces at once. If the rib is thicker, double up your hacksaw blades. My thicker one has two blades with the teeth cutting in each direction.
Then it is just a process to trim the LE/TE with a small hobby wood plane. I have two planes. One is an antique that uses my cast-off DE razors (too dull for face is just fine for balsa wood). The other is a newer one from Lowe's...a cheapie that can be resharpened.

It appears to me that this wing will then have fairly flat wing tips with very blunt, but rounded edges around the wing tips.


Last edited by 944_Jim on Sat Oct 31, 2020 6:00 pm; edited 1 time in total
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Post  OhBee Sat Oct 31, 2020 12:23 am

Hey Jim!....ya... this is kinda a learn as you go project! A bit different than what I recall back in the day.
No rush....it'll all come together eventually!
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Post  Ken Cook Sat Oct 31, 2020 7:11 am

All the gussets I see have their grain orientated incorrectly. You didn't install them incorrectly, they were made incorrectly. The grain needs to run parallel to the 45 deg angle. The only thing that I see them actually doing is offering more glue area. If the center section is sheeted the only ribs requiring them would be the outer tip rips in all four corners.
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Post  OhBee Sat Oct 31, 2020 6:47 pm

Never noticed that Ken! There's a few that are right! After ripping a hole in the elevator trying to install the control horn...I'm done!
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Post  OhBee Sat Oct 31, 2020 6:51 pm

Which way is the damned thing supposed to be installed? Flat edge forward...or angled edge forward?Wood removal 20201017
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Post  Cribbs74 Sat Oct 31, 2020 8:37 pm

The wood or the control horn? If it’s the wood then the large end toward the stabilizing surface.

If you are talking about the horn then it was just made improperly. Don’t sweat the small things. It will bolt together and work just fine.
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Post  OhBee Sat Oct 31, 2020 8:58 pm

The control horn itself....flat edge forward?
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Post  Oldenginerod Sat Oct 31, 2020 11:10 pm

@OhBee wrote:The control horn itself....flat edge forward?
That's how I'd do it. Thumbs Up
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Post  Oldenginerod Sat Oct 31, 2020 11:13 pm

I've used those horns before and they're not the best. A little too flexible and can easily loosen and rotate, causing them to bind on the pushrod. A dab of CA can help. The type with two screws are better.
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Post  pkrankow Sun Nov 01, 2020 9:39 am

Razor plane then longboard sander.

Use some wide angle aluminum to make a cheap long board sander with adhesive paper.

Make a female template accurate to the plan including part of the rib.

Have fun, that is going to take a while.

Phil
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Post  OhBee Sun Nov 01, 2020 11:50 am

Ya..I don't have a plane....what I did was carefully take off a bunch with a razor sharp jacknife,then switched to a small block wrapped with 60 grit! Getting there but tedious. All the sawdust causes my nose to run ,and lots of coughing!.......no I don't got a mask!
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Post  OhBee Sun Nov 01, 2020 11:59 am

Wood removal 20201110
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Post  944_Jim Sun Nov 01, 2020 1:28 pm

Looking good, OhBee!
The Kobalt is a Lowe's item...$11. Depth of cut is adjustable, but the knife edge needs to be dressed from time to time. I'm getting better at sharpening it.
The WilKro is an antique picked up on eBay. I like it because it uses my DE razor blades (after they lose too much edge for my face). It can be re-configured as a bull-nose, a spoke-shave, or long like it is here. Depth of cut can't be changed very much. But it would cut potatoes thinly enough to make almost see through potato chips!
Wood removal Img_2016
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Post  OhBee Sun Nov 01, 2020 1:43 pm

I'd swear I have a small plane somewhere from when I made archery bows! ...Not a clue where. Half my stuff is still in boxes from moving in May!.....and a lot of stuff still in a storage unit 30 mi. away!
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