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Fournier RF-4

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EarlyBird16/10/2020 11:53:13
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Sounds like it is very easy to fix and I have been worrying about nothing laugh

I have been told I worry too much and that is why I have grey/white hair. laugh

I am now convinced so it is onwards and upwards this time.

Cheers beer

Steve

Peter Miller16/10/2020 11:54:45
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I am reminded of someone many,many years ago in a RAF model club.

He built a KK kit of the "Anzac" Later very hurridly renamed Bantam I think because the Australians rightly objected.

THis model was warped all over the place. IT was notable for the lack of application of sandpaper. The covering would have made a blind man cry.

The builder, a total novice, who ignored all advice insisted on taking it out to fly fly it.

We all went out to enjoy the crash and say "We told you so!!!!"

It flew, not well but it flew and didn't crash.

Now I am going to charge my batteries for Sunday. We have a Spot crashing (sorry landing) competition,

EarlyBird16/10/2020 16:10:58
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512 forum posts
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It was easy.

img_20201016_160136902_hdr.jpg

I think anybody would be pleased with that. smiley

Cheers beer

Steve

Peter Miller16/10/2020 18:02:37
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1393 photos
10 articles

Spot ON!!!

EarlyBird17/10/2020 08:10:37
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512 forum posts
375 photos

Thanks for the encouragement Peter which resulted in me going back in the workshop in the evening.

Here is the result.

Spine (?) glued in.

img_20201017_075335756.jpg

Snakes surprise fitted

img_20201017_075424416_hdr.jpg

The weather forecast for tomorrow is looking good in North Lincolnshire I hope you have the same for your spot landing thingy, I did wonder if you will have an unfair advantage because of the Li'l Cub. Which made me chuckle then the devil in me made me wonder if that's the reason for designing it. laugh

I know it's not the reason but the thought of the possibility made me laugh.

Cheers beer

Steve

Peter Miller17/10/2020 08:36:06
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11593 forum posts
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10 articles

No, I will not use the Li'l Cub for the spot landing. It would be an unfair advantage.

I think I will use Miss Camomile just for fun.

It is a very low key competition.

EarlyBird17/10/2020 16:52:40
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512 forum posts
375 photos

For me just for fun is the best. I also like low key. We have a small square painted on the runway for this. I have suggested that it should be larger as I have never seen anyone hit it. laugh

Serious stuff now. The build!

I started at the back of the fuselage as I knew the front needs some redesign. Yes I am making it harder because of the electric conversion.

This is the layout

img_20201017_162534489.jpg

There is plenty of battery space.

img_20201017_162613356.jpg

This is a 2200 3S plenty of room to have two in parallel for extra nose weight. F1 is moved forward about 1" which means it will need trimming to shape. The sides need extending to match. It's all detail I need to think about.

I could buy a OS30 FS but I have been advised otherwise. Stay with electric, for you it is safer. I am still trying to work out what they were trying to say but fingers were mentioned.frown

A bit of banter is all part of the fun.smiley

Cheers beer

Steve

Peter Miller17/10/2020 18:37:40
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11593 forum posts
1393 photos
10 articles

Great that that you are working out the electric conversion.

I like to see people doing conversions and modifications. They learn much more that way.

I have to admit that these days I prefer electric because there is less to carry and it is quicker to set up get the model in the air. This means more time to sit in my chair.

EarlyBird18/10/2020 08:58:14
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512 forum posts
375 photos

Thanks Peter.

' This means more time to sit in my chair.'

I have a chair on the flight line now, but so far I only use it for flying gliders laugh

Have a nice day and I hope you all have fun. Which I know you will have.

Cheers beer

Steve

EarlyBird20/10/2020 10:14:00
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512 forum posts
375 photos

Being a gardener I always find this a sad time of year. The butterflies, bees and wasps have all gone. The flowers are dying back. sad

The good news is that the Green Finches are enjoying the Sunflower seeds that I grow for them. My autumn garlic and onions are all in the ground so I can turn my thoughts to the build.smiley

The front end. F1 will remain in place with a hole for the battery.

img_20201020_095432362_hdr.jpg

One decision made.

How to support the motor mount?

My thoughts are to make a ply box that will surround the battery.

How will the cowl fit? I am working on that.

Air flow over the esc?

I am thinking of using the apple cheeks as air inlets but where will the air exit be?

My head hurts! laugh

Cheers thinking

Steve

Peter Miller20/10/2020 11:46:12
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11593 forum posts
1393 photos
10 articles

How about openuing up the wheel well?

Fun Flyer20/10/2020 12:00:31
357 forum posts
59 photos

Not being brave enough (lazy) to move F1 forward I mounted the battery tray just behind it.

20201003_114246.jpg

The ESC is located under the tray so to provide some cooling I fitted a small scoop on the underside.

20200916_193139.jpg

I also hollowed out the cheeks to cool the motor.
Opening up the wheel well and fitting a retract would be really something!

All my feathered friends have been scared off for the time being by a SparrowHawk.

EarlyBird21/10/2020 06:57:07
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512 forum posts
375 photos

Thanks for the helpful ideas.

The pictures are very helpful FF.

I can now see a way forward, I just need to shake off the lethargy.

It's time to cut some wood and get on with it, I've already spent two days thinking about it and enough is enough.

I love to see the Sparrow Hawks but they seem to think that a bird table is for them also. sad

Cheers beer

Steve

EarlyBird21/10/2020 20:24:54
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512 forum posts
375 photos

I have been cutting woodyes

Servo mount glued to F3.

img_20201021_160515510.jpg

Guide rails fitted to the fuselage sides.

img_20201021_200228965.jpg

and test fit.

img_20201021_200323764.jpg

Glue in place tomorrow and then move on to F2.

Hm thinking a decision on the undercarriage has to be made and the parts ordered.

I have looked at a retract but the available space is very limited so it looks like it will be fixed.

I have had a good day today, made progress on the built and had my flue jab. My arm aches now and I am wondering if I have done too much or it's the jab.

More fun tomorrow smiley

Cheers beer

Steve

Peter Miller21/10/2020 20:46:54
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11593 forum posts
1393 photos
10 articles

My flu jab never hurt, I didn't even feel it going in.

Not like the old TABT we used to get in the RAF. You knew all about that one!!!

 

 

Edited By Peter Miller on 21/10/2020 20:47:38

EarlyBird22/10/2020 19:39:40
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512 forum posts
375 photos

Steady progress today working forwards along the fuselage.

img_20201022_192534188.jpg

Yes all the way to F1, with the tray and hole for the battery,

Minor adjustment required before it's all glued up.

The fun continues. smiley

Cheers beer

Steve

EarlyBird23/10/2020 11:08:35
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512 forum posts
375 photos

The mock up of the motor mount.

img_20201023_105057826_hdr.jpg

The motor mount will be joined to F1 somehow, could be bolts or ply thinking

ESC location as far forward as possible.

Allow for a larger battery, say 3300 3S.

Battery hatch, hinged the same as my Ballerina.

Removable cowl, more thinking

Undercarriage, I have a steerable one doing nothing and I could just fix the steering arm.

Lots to think about.

Cheers beer

Steve

EarlyBird27/10/2020 17:52:43
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512 forum posts
375 photos

Progress!

I have been building the motor mount and battery box which is fixed to F1, The front of the battery tray form the bottom of the motor box.

I have used mortice and tenons, could be tabs and slots, which I last used in woodwork class over fifty years ago.

Everything is a push fit and not glued at all.

img_20201027_173619282.jpg Apart from the focus I am pleased with it.

Next on the list is the undercarriage mount. That will be tomorrow.

Cheers beer

Steve

Fun Flyer27/10/2020 22:00:47
357 forum posts
59 photos

Well done EarlyBird, very innovative. I'm too much of a coward to stray too far from the plan!!

EarlyBird28/10/2020 15:54:13
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512 forum posts
375 photos

I do find design changes difficult but when they work out then the reward is greater. I would have said it is only balsa I can buy some more and try again, this no longer applies as we all know the buying of balsa is no longer easy.

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