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Fournier RF-4

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Peter Miller28/10/2020 18:05:12
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I have always told people that modifying models or solving problems is the first step to designing models.

EarlyBird29/10/2020 15:08:29
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One more step to designing models?

Modifications to the undercarriage.

Here are the components.

img_20201029_145236796.jpg

The nosewheel will bolt together F1 and the added ply plate which moves the nosewheel forward 1/2".

Like so, no bolts yet though.

img_20201029_145328272.jpg

But it gives everyone the idea.

I am having fun todaysmiley

Cheers beer

Steve

Peter Miller29/10/2020 15:32:37
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GReat!

I am having fun too, getting 3 views scaled to an easy size to draw up to the size Iwant

EarlyBird30/10/2020 20:03:56
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Autocad was a revelation in the early eighties, as was the personal computer (PC), but I felt like something was missing not the same as pencil and Rotring Pen. The good old days frown

More fun with glue today. Well F2 and the undercarriage mount is glued and bolted. I have to cut ventilation holes and holes for the wires from the ESC.

img_20201030_193520682.jpg

First test fit.

img_20201030_193154258.jpg

The ESC will be under the motor mount and cable tied to the ply that extends beyond the motor mount.

A few adjustments tomorrow and then it will be glue time again. smiley

Cheers beer

Steve

Peter Miller30/10/2020 20:52:24
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I still use pencil and paper and Rotring pens.

One reason is that on a full size dawing of a free lance design (i.e. Not scale) it is amazing how much difference can be made with a very minor change in a curve or angle that would not be visible on a small screen.

IT can change a rather ugly shape into a much prettier model.

EarlyBird31/10/2020 15:36:46
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I assumed you did Peter and like you I preferred seeing the full size drawing, I think our boards were A0 thinking. It was a long time ago 1977 and my first full time employment.

After a few adjustments and trial fits F1 is glued in place.

img_20201031_141107368_hdr.jpg

Also the battery board is finished complete with all the necessary holes.

This is the bottom view which includes a box for the strap to thread through.

img_20201031_133918163.jpg

More later maybe. smiley

Cheers beer

Steve

EarlyBird01/11/2020 11:56:27
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512 forum posts
375 photos

Fitting the battery board continued this morning. This is the final fit before glue time.

img_20201101_102505179_hdr.jpg

It was tight in places and small gaps in others so I sharpened my pencil and scribed around the edges. Obviously where there were gaps the pencil line was thinner or missing and on the tight sections the line was thicker. Just a simple process of sanding back where the line was thickest to give a better fit.

Having convinced myself that there was nothing else to do I glued the board to F2.

Waiting for glue to dry again!

Cheers beer

Steve

Fun Flyer01/11/2020 14:10:03
357 forum posts
59 photos

Great progress and great ideas EarlyBird. I thought I was pushing the envelope by modifying the cockpit area to make it removable!

EarlyBird01/11/2020 20:22:56
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375 photos

Yes FF and there is more fun to come as I am undecided about the battery hatch thinking

F1 is now glued in place under the sash clamps.

img_20201101_201009603.jpg

Motor mount to be glued in tomorrow, maybe.

Cheers beer

Steve

EarlyBird02/11/2020 10:11:57
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Motor mount glued yes

Cockpit floor glued, which is a bonus. smiley

Test fit the batteries.

img_20201102_095648417.jpg

Two 2200 3S just fit so there is plenty of room.

Now the fuselage is off the board there are more options for what to do next. thinking

I am starting to think of ways to lighten the tail surfaces.

But there is the front end to finish.

Cheers beer

Steve

EarlyBird02/11/2020 14:41:20
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Motor shaft reversed for the folding propeller spinner and fitted along with the nose ring.

img_20201102_142113543.jpg

Now I can make some decisions on how to form the cowl and the battery hatch. thinking time again!

Cheers beer

Steve

EarlyBird03/11/2020 06:35:09
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512 forum posts
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After a lot of thinking and trial fitting pieces of balsa to the cowl.

img_20201103_061703972.jpg

I have decided that I need more thinking time dont know this design business is not easy for me and yet others appear to have no problem designing and building a model in three weeks. How do you do it Peter?

The cowl is put on hold for the time being and I will make progress elsewhere on the fuselage.

Snakes surprise to glue in place, top and bottom sheeting behind the wing seating.

Cheers beer

Steve

Peter Miller03/11/2020 08:38:07
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11593 forum posts
1393 photos
10 articles
Posted by EarlyBird on 03/11/2020 06:35:09:

I have decided that I need more thinking time dont know this design business is not easy for me and yet others appear to have no problem designing and building a model in three weeks. How do you do it Peter?

Cheers beer

Steve

How do I do it? Lots of practice.

The current design on my drawing board IS presenting quite a few challenges. Wing mounting, Under carriage, Strut attachement, Which version do I actually do.

minimax4.jpg

Pete Collins03/11/2020 09:55:30
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146 forum posts
11 photos

You'll have fun with that colour scheme Pete!

Fun Flyer03/11/2020 09:58:44
357 forum posts
59 photos

Trump's personal aeroplane, or should that be airplane...

Fun Flyer03/11/2020 10:01:00
357 forum posts
59 photos
Posted by EarlyBird on 03/11/2020 06:35:09:

I have decided that I need more thinking time dont know this design business is not easy for me and yet others appear to have no problem designing and building a model in three weeks. How do you do it Peter?

The cowl is put on hold for the time being and I will make progress elsewhere on the fuselage.

Snakes surprise to glue in place, top and bottom sheeting behind the wing seating.

Cheers beer

Steve

I decided that designing is too much work so I leave it to the experts and just follow orders.

Peter Miller03/11/2020 11:11:57
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11593 forum posts
1393 photos
10 articles

I have found that I can buy self adhesive vinyl stars on Ebay

If it was Trump's personal aircraft I would have to dive it in vertically from a few thousand feet.

Bob Bertram03/11/2020 14:31:01
331 forum posts
36 photos

I have always liked the Minimax, another one on my to do list. Doubt there is long enough left to do them all. This thread is reviving my interest to carry on with the Fournier and finish it

Edited By Bob Bertram on 03/11/2020 14:32:16

Fun Flyer03/11/2020 15:01:51
357 forum posts
59 photos
Posted by Bob Bertram on 03/11/2020 14:31:01:

I have always liked the Minimax, another one on my to do list. Doubt there is long enough left to do them all. This thread is reviving my interest to carry on with the Fournier and finish it

Edited By Bob Bertram on 03/11/2020 14:32:16

What stage are you at with the Fournier Bob?

EarlyBird03/11/2020 16:05:41
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512 forum posts
375 photos

That's good news Bob I would love to see some photos please.

Turtle deck. I did my usual method of wetting the sheet and letting it dry in place. This is how it looked.

img_20201103_150444249_hdr.jpg

The shape is roughly there which makes it easier to hold in place while the glue dries.

A few pins, tape and pegs is all that is needed. I have not glued along the spine and will do that as a separate operation.

Snakes surprise are glued in. I like them to be flush.

Every time I type snakes it reminds me of a very funny incident when working in Mangrove swamps for Chevron Oil in the Delta Region of Nigeria.

Oops got side tracked there and almost forgot the photo.

img_20201103_153826804_hdr.jpg

Snakes surprise allegedly it was a Black Mamba laugh.

Cheers beer

Steve

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