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Another Fliteskin ME 109 build thread

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Old 02-08-2012, 03:12 PM
  #176
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Default RE: Another Fliteskin ME 109 build thread


Quote:
ORIGINAL: glazier808

Erans...let's just fix it(I can help from here!)

First...draw a line on the joiner where it protrudes from the wing.

Second...cut it at that line(flush with mating edge of the wing)

now if you can get that glued piece out...I'll send you a template I made from 1/64 ply for a new one
No biggie all fixed

if you cant get it out, glue the other half in and mark the protruding end and cut again flush with the mating edge of wing

now when you pm me your info, I can send you this template. Once you make a new one we'll glue it in right next to the original...you will just have to cut some slots so it too can slide in like the original..

Fixed!

Oh yeah...I'm not an amazing craftsman....20+ years of building skyscrapers has taught me how to fix what engineers told me will work! LOL

Casey
I like it!!
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Old 02-08-2012, 04:51 PM
  #177
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Default RE: Another Fliteskin ME 109 build thread

Gee, the pressure...
OK, so Ihave PM to Casey asking for the new joiner drawing. I will give it another consideration.
As I said to Casey in the PM, my main concern is with the centre ribs. By increasing the dihedral, I will have a wide gap at the bottom of the wing as both centre ribs are already glued in place at the current dihedral angle. There is no way I will open them as all the spars and the servo mounts are glued to them with Epoxy.
Once I have the new joiner and can see the new gap, I will decide if I am changing it or not


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Old 02-08-2012, 05:32 PM
  #178
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Default RE: Another Fliteskin ME 109 build thread

Eran,

Actually you will raise the wingtips with the new joiner, so you wont open it on the bottom skin...you'll end up closing up the gap at the top skin.

Working on scaning the joiner...
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Old 02-09-2012, 01:20 AM
  #179
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Default RE: Another Fliteskin ME 109 build thread

Casey - I currently do not have a gap. Iglued the ribs in an angle . With the new joiner, I will have to sand the "top" half of the ribs and will have a gap at the "bottom" half of the centre ribs.

Today I decided to take care of the ailerons servo leads before I forget them. Iadded 12" extension leads to get it to the wing centre section. I wanted to make sure that if something happen and I need to take the servo out, Ican disconnect the extension (so Iwill not have to add damage to the wing to re-rout it). I cut slots in the wheel walls and got the extension through. I protected the wire with two layers of electrical tape (so the Fliteskin won't cut it). Iused Gorilla glue to hold that section in place and it can be easily released from the glue if needed. The whole is big enough to allow the extension joiner protector to be pulled into the wheel recess so it can be opened. Once the wheel recess is painted the cable will hardly be noticeable (and it not interfering with the wheel).

I then gave the TE next to the aileron some attention. Ihad to fill up some balsa on top of the TE spar to have the correct line with the aileron and the fibreglass wing-tip for the Fliteskin cover.
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Old 02-09-2012, 05:48 AM
  #180
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Default RE: Another Fliteskin ME 109 build thread

If you have not altered the skins(at the mating edge) we should be able to...we're only raising the wingtips another small bit...at the worst we may have to cut the top of the mating rib loose from the skin

Casey
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Old 02-14-2012, 05:00 AM
  #181
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Default RE: Another Fliteskin ME 109 build thread

Ididn't have much time recently to work on the aeroplane, but Ithink I have a plan to fix the dihedral.
First I calculated the correct dihedral angel. Imade a paper template and found the gap at the bottom to be 6-7mm if I let the "top" of the current centre ribs touch at the centre.
I then laminated two 1.5mm plywood sheet to make new wing joiner (I didn't have 3mm plywood of good quality).

My plan is to insert tapered centre rib made out of balsa to fill the gap created by the amended angel. I tapered balsa rectangle sheet and then cut the rib shape. A bit more sanding and Ithink Iam on to something.

I also got yesterday the package from Tower Hobbies with the air line restrictors for my retracts, so Ican complete the retracts installation now.
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Old 02-14-2012, 06:24 AM
  #182
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Default RE: Another Fliteskin ME 109 build thread

Erans....my scanner has been wrecked by my little boy it seems...I've fiddled with it but is seems to be screwed up good...I can still send you this template though

Casey
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Old 02-14-2012, 11:06 PM
  #183
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Default RE: Another Fliteskin ME 109 build thread

Thank you Casey, Ihave already fabricated the joiner (Despite the fact that Iam an Engineer )

Today was the day of "no return". Icut the original wing joiner and glued it in place in the other half wing. Ithen cut new slot in the centre rib for my new wing joiner and new cut recess in the next plywood rib. The test fit of the wing joiner on both sides was very good.
Ithen temporarily added my new "wedge rib" and joined the wings to check the new dihedral and gaps. It came out with the "wedge rib" almost spot on requiring very little further sanding.
I also took picture without the "wedge rib" to show the gap at the bottom of the wing when joined at the correct dihedral.
I then glued the "wedge rib" to the left wing with Epoxy and my time for today run out...
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Old 02-15-2012, 11:02 PM
  #184
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Default RE: Another Fliteskin ME 109 build thread

After checking and re-checking the new dihedral, today Iglued the new joiner in place into the left wing.
Then, Iattached the landing gear to the right wing and routed the air lines to a convenient location.
I spent the rest of the available time preparing it for the bottom skin. I found that quite a lot of work was required in the area between ribs 9 and 10 and next to the wing tip. My not so perfect aileron installation required some material to be added to the TE spar. I then sanded it so it will allow the skin to be in reasonable height compared with the aileron LE. Ihad the same problem on both wings, but Ithink it will be hardly noticeable once the skin attached.

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Old 02-16-2012, 06:40 AM
  #185
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Default RE: Another Fliteskin ME 109 build thread

Eran, it's looking like a 109 allright,
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Old 02-16-2012, 06:49 AM
  #186
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Default RE: Another Fliteskin ME 109 build thread

Great job on the fix! I'm hoping to get to the shop today myself to get something done!

Casey
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Old 02-17-2012, 12:13 AM
  #187
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Default RE: Another Fliteskin ME 109 build thread

Thank you Jose, Casey.

Today was a short day. Ionly managed to get the left landing gear fixed in place and made a mount for the air fill valve.
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Old 02-18-2012, 04:52 PM
  #188
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Default RE: Another Fliteskin ME 109 build thread

Very fancy air valve Eran, where are you mounting it? I mounted mine under the scale inspection panel on the port wing.
JG
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Old 02-18-2012, 09:14 PM
  #189
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Default RE: Another Fliteskin ME 109 build thread

My valve will be roughly at the location as shown in the plans, but protruding from the bottom. I will have the black metal panel painted with the under wing colour.
Your install is much neater and easy to access, but I didn't want the hassle of creating the hatch cover.
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Old 02-22-2012, 02:34 AM
  #190
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Default RE: Another Fliteskin ME 109 build thread

Finally I found couple of hours to work on the aeroplane. I cut the hole for the air cylinder in the new centre rib and plumbed the air lines in the left wing. I found that I am short of one "T" (Robart #225) to get the plumbing done.
Iended up ordering it from the UK, so will have to wait few days before Ican complete it...
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Old 02-22-2012, 02:50 PM
  #191
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Default RE: Another Fliteskin ME 109 build thread

I was short one also lol...probably, they don't factor in use of a pressure gauge...just a guess. I pressurized mine last night and all went well! I just need to mount the servo's for the flaps and the retract control unit now.

Casey
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Old 02-22-2012, 06:14 PM
  #192
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Default RE: Another Fliteskin ME 109 build thread

Casey - I'll bet you didn't have to order the part from another country...

Well, Ineed some advice on this next one, Iwas checking the wing mounting bracket and while sliding well into place the only contact points with the wing are the centre rib (through) and the next two plywood ribs (surface touch).
Am I missing something or is this strong enough?
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Old 02-22-2012, 06:46 PM
  #193
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Default RE: Another Fliteskin ME 109 build thread

Eran,
glue to the back of the wing leading edge.

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Old 02-26-2012, 02:59 AM
  #194
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Default RE: Another Fliteskin ME 109 build thread

Some good news today. Itook the wings to the airfield and had them inspected by Heavy Model Inspector. He was happy with it and gave his tick of approval.

Jose - The bracket, when inserted in the marked slot, has a gap to the leading edge. Iwill glue something to bridge this gap.


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Old 02-28-2012, 02:38 AM
  #195
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Default RE: Another Fliteskin ME 109 build thread

Ihave received very strong indication today that Iwill be starting my new job on the coming Tuesday, so, Ithink that no much time will be available to build the ME-109 for a while after that date.

So, without wasting time I am preparing for the bottom Fliteskin application. Starting with the right wing, I glued some balsa wood around the wheel wall which will allow me to place some Gorilla Glue on it when I"skin" it.
Then, I trimmed the Fliteskin, starting with the wing-tip and then the TE. I had to cut around the aileron hinges which protrude through and also around the landing gear "door brackets" (they at surface hight).

With some luck I will get it glued tomorrow.

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Old 02-29-2012, 05:55 AM
  #196
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Default RE: Another Fliteskin ME 109 build thread

I was debating myself what to do with the landing gear cut out in the skin for a while. Do Icut the Fliteskin before or after the application of glue. I decided to mark to Fliteskin, but to glue it as full sheet to allow for correct contour and cut the opening later.
So this is what Idid. The photos show the template Iused to mark the round opening copied from the plans. I made a hole in the template centre to align with the wheel axle.

The next stage was last test fit and then to the no-return point of gluing the skin.

The result on most of the wing is very good, but I do have an issue on the last 1/3 towards TE of ribs 8 and 9 , where the weight of the magazines didn't sit properly and the Gorilla glue lifted the Fliteskin. It can be seen in the last photo as dots of glue and not so clear rib to skin fit as everywhere else. Iwill need to fix it once I figure out how...
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Old 02-29-2012, 05:36 PM
  #197
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Default RE: Another Fliteskin ME 109 build thread

Eran,

you made the right choice by not cutting gear opening before sheeting, except the cut out for the gear door mount. Use the template from the wing plan to cut the gear door with the correct shape, later you can laminate with the gear door lining vacuum form.
DO not worry about the few spots the glue dod not reach the skin, will not be an issue.

Keep them coming,

JG
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Old 03-01-2012, 03:25 AM
  #198
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Default RE: Another Fliteskin ME 109 build thread

Jose - Its not that the glue didn't reach the skin, it actually pushed the skin away from the rib so it does not conform to the rib shape any-more. I am not sure if this is going to effect the wing that much, but it is something to look into. I hope the first two pictures show what I try to explain here.

I was hopping to get the other wing half done today, but time run out before I had a chance... All I managed to do is the Fliteskin to shape (further then shown in the photo)
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Old 03-03-2012, 05:22 AM
  #199
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Default RE: Another Fliteskin ME 109 build thread

Eran, I see what you saying, but it would not affect the flying. Just make sure when you sheet the bottom of the wing, that the wing has enough support so it does not twist. Double check against each other as well.

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Old 03-03-2012, 07:37 AM
  #200
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Default RE: Another Fliteskin ME 109 build thread

Hi!
...But is polyurethane glue really the glue for this? Polyurethan is fine for balsa covering a foam wing but for glueing thin epoxy plates to a wooden surface...??
Isn't 24hour epoxy with cabosil better to use!?
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