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Author Topic: Keil Kraft Flying Scale Series Erco Ercoupe  (Read 1962 times)
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Snaky Stringer
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« Reply #25 on: June 02, 2018, 03:14:03 PM »

Andrew. Ah yes. Magnets. I keep reading about these magnets. Where does one get them or is that a ridiculously silly question? Do you fix a magnet plus a metal piece on each side for example. It sounds like  a very handy arrangement, and up front where one usually needs a bit of ballast.
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Snaky Stringer
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« Reply #26 on: June 02, 2018, 03:26:58 PM »

Not sure if this will work

file:///D:/84897_1475487393oo-pus.webp
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Andrew Darby
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« Reply #27 on: June 02, 2018, 03:35:37 PM »

I got them from here as I have used them for work purposes...

https://www.magnetexpert.com

You have to buy a fair few as the little ones are sold in multiples.

I bury a couple in opposite positions in the nose and the block, obviously with opposing poles so you get a real good clamping force.  If you have a model with a nose block that is easily got in the wrong position, I suppose you can be really clever and set the second pair with the poles in reverse so that if you put it in the wrong way round it won’t seat properly...

Andrew
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« Reply #28 on: June 02, 2018, 03:43:11 PM »

Thanks. They look interesting. I suppose I could corder a pack of ten to start. I'd be sure to find them useful
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Bryanair
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« Reply #29 on: June 02, 2018, 04:57:21 PM »

According to the CAA's website GINFO there is only one Ercoupe in the UK.  Its registration is G-ERCO.

G-HARY is an Alon A2 BTW. I've noticed that the cockpit canopy is different.

Pictures of G-ERCO here:-

https://abpic.co.uk/pictures/search?q=G-ERCO&f=registration&exact=1&search_type=simple&source=g-info
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Indoorflyer
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« Reply #30 on: June 02, 2018, 05:45:36 PM »


There's a fairly detailed summary of 'coupe history here:

https://www.skytamer.com/Alon_A-2.html
« Last Edit: June 02, 2018, 06:04:12 PM by Indoorflyer » Logged

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danmellor
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« Reply #31 on: June 02, 2018, 06:00:59 PM »

K&P Do the magnets. Direct or through SAMS or Flitehook. I find 1x3mm to be the most useful for general stuff.

Dan.
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Indoorflyer
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« Reply #32 on: June 02, 2018, 07:41:06 PM »

Will this photo help?  CLICKY

Edit:  I see Pete already linked to this photobucket album on the prev page. Sorry 'bout that!
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Snaky Stringer
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« Reply #33 on: June 02, 2018, 07:43:04 PM »

Thank you, Dan. I have ordered some plus some rubber and lube.
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Andrew Darby
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« Reply #34 on: June 03, 2018, 05:16:01 AM »

Thanks Bryanair and indoor flyer, no problem... Grin

I still can’t understand how I missed the photobucket pictures!

One of the mysteries I wanted to solve is whether or not one of the wings has a registration number underneath, and looking at the pictures it doesn’t.  I was sort of hoping it did as it would have looked nice in gold tissue..

I think I will go with the red scheme, I like red aeroplanes and I have plenty of red Esaki... Cheesy

Andrew
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billdennis747
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« Reply #35 on: June 03, 2018, 05:49:31 AM »

K&P Do the magnets. Direct or through SAMS or Flitehook. I find 1x3mm to be the most useful for general stuff.

Dan.
https://www.first4magnets.com/circular-disc-rod-c34
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Andrew Darby
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« Reply #36 on: September 09, 2018, 12:01:28 PM »

I have made some progress on the Ercoupe this week.

Most of the covering is done, I say most as you can’t completely cover the Fuselage until the wing is installed, which I did today.

There is nothing on the plan to anchor the tissue to the wing so I have run a “bead” of balsa at the edges as shown in the pics

What you see in the pictures comes in at around 26g, including the material I will use for the glazing.  The relatively long nose balances the large tail plane pretty well, so I don’t think I will need much in the way of noseweight.  I think the AUW should be in the region of 30g making for a reasonable wing loading of around 0.5 g/sq”....

Andrew





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Klunk
Andrew Darby
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« Reply #37 on: September 13, 2018, 06:57:23 PM »

A bit more progress...

Andrew
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Klunk
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« Reply #38 on: September 14, 2018, 10:13:57 AM »

That looks very nice. Is that a KK 7" prop? If so, I suppose lightened a bit.
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Andrew Darby
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« Reply #39 on: September 14, 2018, 01:32:29 PM »

Hi Snaky,

No ‘fraid not.  It is a 6” one but down to about 5 1/2” span.  I had to cut it down to clear for ROG.  Embarrassed

A 6” or a 7” would have been better at this span.  I have tried to keep this light so it should fly on 1/8”, so it shouldn’t rip through the turns too quick even with the less than ideal sized prop...

To make the situation worse I have made the peg position very far forward, so it will be a shortish motor too, but i’m Gambling that the niseweight saving will save on power etc...

Not one for making life easy for myself!  Grin

Andrew
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flydean1
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« Reply #40 on: September 14, 2018, 08:15:01 PM »

The forward peg will allow a MUCH longer motor than a rearward one.
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Andrew Darby
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« Reply #41 on: September 15, 2018, 04:05:22 AM »

Well yes and no, even if braided it  I could run into trouble with the distribution when it runs down, this is an indoor model and I need to make sure that things stay balanced for a smooth landing...

Andrew
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« Reply #42 on: September 15, 2018, 10:51:09 AM »

Not sure if you're interested ... a new strip mall has opened near where I used to work (oddly, my last day at that company was yesterday, 14 Sept 18(!)). The strip mall is called "Riverdale Park Station" which apparently is adjacent to where the Erco factory used to be.

There is an Ercoupe on a pillar in front of the mall. Sort of like the "gate guard" at an Air Force base. It's red.

Here is a website with some pictures and a short narrative about historical "provenance": https://www.routeonefun.com/2017/11/flying-back-home-to-riverdale-park.html

Pics in the next post (the pics are *not* mine ... I was lucky to find them online).

Regards-
Dave
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dosco
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« Reply #43 on: September 15, 2018, 10:51:48 AM »

https://1.bp.blogspot.com/-pDnYIrAtWx4/WfyofO2YxbI/AAAAAAAAQRc/V7xM0U_kk5cXtK4b5QDclXXMlvDHeiBxgCKgBGAs/s1600/IMG_7320.JPG
Keil Kraft Flying Scale Series Erco Ercoupe
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dosco
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« Reply #44 on: September 15, 2018, 10:52:38 AM »

https://1.bp.blogspot.com/-4B8WXoIyBBs/WfyoZrRtmxI/AAAAAAAAQRY/WJntBZLk4e0StCq7bBbxxbec_5ejNxbNgCKgBGAs/s1600/IMG_7316.JPG
Keil Kraft Flying Scale Series Erco Ercoupe
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Andrew Darby
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« Reply #45 on: September 15, 2018, 12:44:51 PM »

Hi Dave,

Thanks for posting, It's sort of a pity its flying days are over, but at least it can raise some interest and acts as a good reminder of the factory.  Best of all it hasn't ended up being melted down for pop (soda) cans!

Cheers

Andrew
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« Reply #46 on: September 16, 2018, 04:25:04 PM »

Nearly done, just the control surfaces on the wings to draw on...

Andrew

Ps the weight is 26g sans rubber, and the balance is just forward of the wing spar...
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