RE: Wing kit from Edge 540T 80inch span

RE: Wing kit from Edge 540T 80inch span
View related threads: (in this forum | in all forums)

Logged in as Guest

Users viewing this topic: none

Printable Version

All Forums >> RC Airplanes >> Profile and Fun Flying Planes >> OMP - Ohio Model Products Support Forum >> RE: Wing kit from Edge 540T 80inch span

Page: << < prev 1 [2] 3 4 next > >>

Login

Message

<< Older Topic Newer Topic >>

RE: Wing kit from Edge 540T 80inch span - 10/11/2005 8:35:12 PM

AFSalmon

Posts: 3685
Joined: 5/24/2002
From: Beavercreek, OH,
Status: offline

Questions:
1. I'm used thin CA to glue TE, sub-LE, and spars to ribs. Is it strong enough or should I double all joints with epoxy or thick CA? CA is more than fine
2. Do I need to paint the wing tube sleeve with epoxy or should it stay as it is? No! The wing tube sleeves act only as guides and are not structural. The aluminum tubes are the structural member. Epoxy will add unneeded weight!
3. Shear webbing should go only on the front part of spars (like I see on the picture) or on both sides of spars (double shear webbing)? Follow the instructions on the shear webs and make sure you glue them to the wing tube sockets as well.

_____________________________

Mike (Salmon) Pilkenton, Chief Slab Designer
Ohio Model Planes, Team OMP Captain

(in reply to RysiuM)

Post #: 26

RE: Wing kit from Edge 540T 80inch span - 10/11/2005 11:01:57 PM

RysiuM

Posts: 1382
Joined: 4/22/2003
From: Elk Grove, CA, USA
Status: offline

quote:

ORIGINAL: AFSalmon

Questions:
...
Follow the instructions on the shear webs and make sure you glue them to the wing tube sockets as well.

Thanks, I did follow the instruction. As I said instruction is clear and big scale pictures help a lot. As for shear webs I used additional piece of 1/16 x3 balsa as 24 inch provided was not enough. As I moved the R1 closer to R2 so 3 inch width balsa was enough.

I did however modify the shear web by addind 0.75inch to the 4inch width. The distance between ribs is about 4-7/8 so I have about 1/8 inch gap between the other rib and shear web. I hope I didn't screw up

Please let me ask another question. While I'm building this wing I'm learning so I can use this experience making scratch wing for my 1/4 scale Wilga (100 inch span).

Most of wings I saw are built without sub-leading edge. I found using sub-LE method much easier with positioning front of the ribs. However the LE sheeting instruction is different from what I used to see.

All wings I built or repaired were made the way, that first the LE is glued to the ribs, then sanded to the front rib angle (trapezoid shape), then the sheeting is done ever the LE and finally the entire LE is sanded to the round shape.

This wing is made by gluing the sheeting to sub-LE and cut/sanded flat, then the LE is glued and sanded the round shape. I found it difficult to glue the sheeting to sub-LE as sub-LE is very thin balsa and was flexing easy. I was almost about to glue the LE first before sheeting and sand it to the rib angle, then add sheeting over the LE. But I finally decided not to, because I told to myselt, that you guys built many wings like that and maybe there is some important reason to have it that way, not mine.

What is the benefit of doing it your way? Is any?

Now I have the top side ot the left wing almost done (I only need to put a servo try) and the wing is looking very nice. It weights 12 oz and I believe it will be less then 16 oz when it's done. For sure it will be lighter than H9 wing even including wing tube.

I decided to work on the second side after I finish the fist side on the right wing. It will be easier to compare both wings and constuction changes while I still have one side open. If I'll have enough time today I should be ready to start the right wing (I always repeat to myself: "don't end up with two left wings"

.

RysiuM

_____________________________

Mather Aerospace Modelers, Inc.
AMA Gold Leader Club, Charter #1243, Sacramento, CA

(in reply to AFSalmon)

Post #: 27

RE: Wing kit from Edge 540T 80inch span - 10/13/2005 10:41:32 PM

RysiuM

Posts: 1382
Joined: 4/22/2003
From: Elk Grove, CA, USA
Status: offline

Update:

I'm glad the weekend is comming, finally I will have more time to work on the wing. The first wing is almost done (I just need to do sheeting on the top side and glue in the LE). I started to cut ribs and formers (for the root rib bent) ror the right wing .
I also made a template for aileron's ribs. I decided to have wing with flat TE and 45 degree beveled LE on ailerons. Ailerons are huge. Each one is is 36 inches long and 4 inches wide. I will need high torque (at least 160 oz) servos to operate them.

When I setup this new wing into my H9 model in RC G2 it was flying the way exactly I wanted it to fly. Even with such huge wing the roll rate was insane (a couple per second). And when the wingloading dropped from original 32 oz/sq ft to less then 23oz/sq ft the plane is a real floater. This plane combined with power from Brison 2.4 should be nice fying (and nice looking) 3D machine.

quote:

ORIGINAL: RysiuM
I may be a short of the wing tube sleeve. I remember I asked for additional 10 inches because I need a piece that goes inside H9 fuselage. I just measure the fuselage - it is exactly 8.5 inches but the leftover I have is only 7.5 inches. So now I'm one inch short.

I called today OMP about the missing piece of sleve. They told me that OMP doesn't sell such parts alone but someone is going to call me tonigt to help me out. When the first time I was ordering the kit I didn't know the fuselage width, but I estimated that 10 inches of additional sleve should be enough.
Now I know. If I cut provided sleve exactly by the plans I would end up with 5.5 inch leftover. As my rot rib is closer to the second rib by 1 inch or so, I have left total about 7.5 inches of sleve. Not enough to fit into 8.5 inches fuselage.

If you guys don't have a spare piece of 10 inch long sleve, give mi information who can sell it to me. The wing tube is 22mm OD so I need a sleve for that size.
I'm sorry , I'm making a big deal of that, and maybe it easy to make the sleve myself (fiberglas one), but I've never done that so I don't know.

RysiuM

< Message edited by RysiuM -- 10/13/2005 10:48:51 PM >

_____________________________

Mather Aerospace Modelers, Inc.
AMA Gold Leader Club, Charter #1243, Sacramento, CA

(in reply to RysiuM)

Post #: 28

RE: Wing kit from Edge 540T 80inch span - 10/13/2005 10:45:26 PM

STLPilot

Posts: 9091
Joined: 3/12/2003
From: Manhattan, NY, USA
Status: offline

quote:

ORIGINAL: RysiuM
I called today OMP about the missing piece of sleve. They told me that OMP doesn't sell such parts but someone is going to call me tonigt to resolve the problem.

Have no fear, we sell anything not nailed down and sometimes we'll do that too. If nobody gets to you by 9 PM post a message and I'll make sure someone does. Unfortunately I work at office without product or I'd do it for you.

_____________________________

Here At The Wall

(in reply to RysiuM)

Post #: 29

RE: Wing kit from Edge 540T 80inch span - 10/14/2005 1:06:13 AM

RysiuM

Posts: 1382
Joined: 4/22/2003
From: Elk Grove, CA, USA
Status: offline

quote:

ORIGINAL: STLPilot

If nobody gets to you by 9 PM post a message and I'll make sure someone does. Unfortunately I work at office without product or I'd do it for you.

Thanks Dion, I just got a call from the shipping. I gave CC again and all addresses are in the e-mail to OMP. He promissed to ship the tube tomorrow. It works for me very well. Now back to building board.

RysiuM

_____________________________

Mather Aerospace Modelers, Inc.
AMA Gold Leader Club, Charter #1243, Sacramento, CA

(in reply to STLPilot)

Post #: 30

RE: Wing kit from Edge 540T 80inch span - 10/19/2005 11:58:56 PM

RysiuM

Posts: 1382
Joined: 4/22/2003
From: Elk Grove, CA, USA
Status: offline

Update, so don't you think the project died

I finished building the bottom part of the second (right) wing. Yes, I managed actually to build left and right wing, not two identical left wings

. The right wing was much easier to build and it took me less time and effort - I didn't even looked back to the instruction. So actually I have both wings in the same building stage. I just need to sheat the top surfaces, and put wingtip caps and leading edge (and of course trim excess sheating). Then will be the time to make my airfoiled ailerons and finally put H9 covering.
But before I start to cover the wing I need to rebuild the fuselage. Just to make sure all mounting holes are aligned properly and I have zero incidence. For that I need to have access to the wing from the inside.

I still need to order 3ft CST wing tube (the original is 32 inches long, but I will need 36 inches). Or maybe I can find somewhere 22mm aluminum tube.

Now the question time. It is not really related to OMP but generaly to the wing mounting. OMP uses small tabs at the LE and TE on the root rib to secure the wing to the fuselage. I can't do that so I need to use alternative option. I saw 3 types o securing the wing to the fuselage:

1. Bungee lines streached inside the fuse between hooks in both wings. I saw this in SIG Something Extra. I think it will work for such small plane but I've never seen it on the giant scale. Can it work?

2. 1/4 nylon screws put from the fuse inside through the fuselage wall screwed into blind nuts in the root ribs. I have it on my PLH edge, and I saw ithis also in other planes of that size. It works quite well.

3. Set screw put through through the top surface of the wing and screwed into the wing tube. I saw this in some giant scale Katana, and I think BME Edge 30% also has this solution. I'm not sure how good is that.

I was going to use option 2, but I thought it's worth to ask.

RysiuM

_____________________________

Mather Aerospace Modelers, Inc.
AMA Gold Leader Club, Charter #1243, Sacramento, CA

(in reply to RysiuM)

Post #: 31

RE: Wing kit from Edge 540T 80inch span - 10/21/2005 12:55:19 AM

RysiuM

Posts: 1382
Joined: 4/22/2003
From: Elk Grove, CA, USA
Status: offline

quote:

ORIGINAL: RysiuM
Now the question time...

Anyone?

Just for your info - the sleeve arrived. Thank you. I will start stripping the fuselage tonight.

RysiuM

_____________________________

Mather Aerospace Modelers, Inc.
AMA Gold Leader Club, Charter #1243, Sacramento, CA

(in reply to RysiuM)

Post #: 32

RE: Wing kit from Edge 540T 80inch span - 10/21/2005 8:05:19 PM

IowaSilvia

Posts: 905
Joined: 11/30/2003
From: Billings, MO, USA
Status: offline

If it was me. I'd go with 2 sets of hooks on each wing. Use rubberbands to hold them together. 2 heavy bands for each set of hooks. Easy to intall. Bolts, nuts, etc get heavy.

I had a Creek Hobbie Extra. Had only one hook on each wing. It held fine. You don't need much as there isn't lots of force pulling the wings apart.

(in reply to RysiuM)

Post #: 33

RE: Wing kit from Edge 540T 80inch span - 10/21/2005 9:50:25 PM

RysiuM

Posts: 1382
Joined: 4/22/2003
From: Elk Grove, CA, USA
Status: offline

quote:

ORIGINAL: IowaSilvia
If it was me. I'd go with 2 sets of hooks on each wing. Use rubberbands to hold them together. 2 heavy bands for each set of hooks. Easy to intall. Bolts, nuts, etc get heavy.
I had a Creek Hobbie Extra. Had only one hook on each wing. It held fine. You don't need much as there isn't lots of force pulling the wings apart.

Hmm... I didn't know you can do it on such big plane. Nylon bolts are not heavy, just a little more work assembling the plane at the field. I was thinking about two nylon screws on each wing: one just in front of the tube, and the other on the back close to the antirotation pin. First would cancell any slack in the wing tube, the other would make sure the pin doesn't get out of the fuse.
But it's still open issue.

I emptied the fuselage yesterday. It would be easier to install the wing tube if I didn't have all the enforcement already there. I have to cut some plywood plates (added to the frame in weak points) and replace them with a littel bigger that will hold the tube.
Because the wing is bigger I had to move a switch and voltage indicator (now it is covered by new wing). I may move a fueler a bit, but I will know for sure, when I set the wing incidence and ten I will know where the leading edge is. I also tested, that the wing tube will not block the access to the fuel and smoke tanks.

I decided to keep original rails that hold the old wing as thy add some sthrength to the fuselage sides. Even if I deside to cut them off, I will replace them with lighter wood (spruce).

I fit try the wings on the fuselage, and ot looks like the left side is perfect without even small gap between the fuse and the wing, but on the right side I think I may have 1 or 2 mm gap. But if I use screws to mount the wing, something should flex (wing or fuse) and reduce the gap to minimum. If not, I can use 3mm balsa sheeting on the root rib sanded to the perfect fuselage shape.

Now the good news is: WEEKEND !!! The only think o like more than weekend is .. a long weekend

RysiuM

_____________________________

Mather Aerospace Modelers, Inc.
AMA Gold Leader Club, Charter #1243, Sacramento, CA

(in reply to IowaSilvia)

Post #: 34

RE: Wing kit from Edge 540T 80inch span - 10/21/2005 10:22:18 PM

RysiuM

Posts: 1382
Joined: 4/22/2003
From: Elk Grove, CA, USA
Status: offline

Legal note to Moderator:

I just read the thread again and I noticed one thing. This is OMP support forum, so my posts are quite on the edge of the forum policy. I CMA with Mike's post #12 where he asked me to keep you informed.

Please let me know, when I cross the line, and if so, you may need to move the thread to another maybe more relevant forum.

Thanks
RysiuM

_____________________________

Mather Aerospace Modelers, Inc.
AMA Gold Leader Club, Charter #1243, Sacramento, CA

(in reply to RysiuM)

Post #: 35

RE: Wing kit from Edge 540T 80inch span - 10/22/2005 2:26:29 AM

STLPilot

Posts: 9091
Joined: 3/12/2003
From: Manhattan, NY, USA
Status: offline

What's the problem with the thread? Clue me in .... PM me if you have too.

D

_____________________________

Here At The Wall

(in reply to RysiuM)

Post #: 36

RE: Wing kit from Edge 540T 80inch span - 10/22/2005 6:11:24 AM

RysiuM

Posts: 1382
Joined: 4/22/2003
From: Elk Grove, CA, USA
Status: offline

quote:

ORIGINAL: STLPilot
What's the problem with the thread?

Not yet

I sent you PM with explanation.

Before I called off the day I cleaned up the fuselage from pieces of old enforcements, ballsa fillers, throttle servo mount and other junk. I had to get to the bare frame to make new hard points for the wing tube mout. See on the picture, the tube will be just in front of the second former. That position was established by making the balancing point of the new wing at the same spot at it was with the original wing. I still have some flexibility by moving radio equipment .

On the second picture you can see a little problem. The wing tube will cut right through the fuselage side frame. I prepared the frame for gluing plywood plate from the inside that will enforce the fuselage sides and at the same time will carry the airplane weight to the wing tube.

Tomorow is a flying day - I need to check my hand crafted low end needle in the carb for Magnum 52XLS. I will get back to H9 Edge later afternoon (6pm is to dark to fly anyway).
So far to prove that I really was building here is the picture of two wings half sheeted. They will wait like that till I finish the fuselage modification.

RysiuM

Attachments

Click to see fullsize image.

Click for fullsize

Click to see fullsize image.

Click for fullsize

Click to see fullsize image.

Click for fullsize

_____________________________

Mather Aerospace Modelers, Inc.
AMA Gold Leader Club, Charter #1243, Sacramento, CA

(in reply to STLPilot)

Post #: 37