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My RF4

Building my Fournier from Peter Miller's plan.

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Fun Flyer14/11/2019 12:03:36
293 forum posts
38 photos

Warning, this will not be a quick build so don't expect daily updates! In fact I've been just a bit under the weather recently and have hardly set foot in the workshop for nearly three weeks. Hopefully things will start moving forwards now, albeit slowly.
All comments and advice will be welcome.

This is the set of parts prepared some time ago.

img_0867.jpg

The fuz assembled. The top decking put up a bit of a fight but we got there in the end.

img_0941.jpg

Although I know a four-stroke would sound terrific I'm going the electric route.

img_0940.jpg

Since this picture was taken I've installed all the ribs and the top spar.

img_0942.jpg

I suspect that shaping the LE cap strip after its been installed may be a bit of a challenge.

Peter Miller14/11/2019 18:26:49
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10310 forum posts
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Hi Fun Flyer.

THayt looks really good. Electric will be great for power.

Shaping the leading edge capstrips is no problem. Once the leading edge sheet has been shaped back to flush with the leading edge just stick the capstrip on.

Then plane it back to flush with with the shape of the sheeting and then just round it off to match the airfoil as near as looks about right.

The old "That looks about right" works well.

Fun Flyer15/11/2019 15:24:14
293 forum posts
38 photos

Thanks for that Peter. However my post was misleading, what I meant was the 1/8th. LE, not the capstrip.

Coincidently, "Pilot" magazine have been running a series of articles about the restoration of a full size RF4 and what's very noticeable is the resemblence that the stripped airframe has to the photos in your build thread. The writer has problems with iron on covering that will be familiar to most modellers! He also flys a Turbulent so his credentials are good.
You can read it all here: RF4 Restoration

kc15/11/2019 17:52:09
6076 forum posts
169 photos

This seems to be the RF4 from the free plan supposedly in RCME July 2011. I say supposedly because actually that issue contained 2 fuselage plans and no wing plan! The correct plan was actually printed again in RCME August 2011 and the missing former F2 was availble to download from this forum. For anyone interested there is a copy of RCME August 2011 for sale at 1.90 here although it says free plan included it doesnt say BOTH free plans ( AgriTug was that months free plan too) are actually there. Worth a try as it's a cheap way to get the plan....... The construction article was in the July 2011 issue though.

Plan No RC 2085 and canopy are available from Sarik.

I believe that Peter's  O Four 9ER is also a semi scale RF4 and the plan is available here as Mag15.

Edited By kc on 15/11/2019 17:58:47

Peter Miller15/11/2019 18:13:10
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10310 forum posts
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Sarik also do my Fournier RF-7 which is the aerobatic version to the same scale. They also do, the CD of scale photos of the original.

This one is actually built from the full size original.

Peter Miller15/11/2019 18:15:26
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10310 forum posts
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The leading edge strip is easy too. Champher the lower edge to match the ribs. glue in place. Plane the top down to match the top of the ribs. Oiece of cake!!

John Wagg15/11/2019 19:39:36
13 forum posts
2 photos

Sorry to sort of hijack the thread. What sort of size motor and battery would you expect to use.

I have a Bill Burkinshaw RF4 plan RCM&E May 1997. It is an 88 inch span and recommended for a Laser 45. Would the same electrics do for this or could someone advise on an electric setup. I have all the wood, canopy and even the ribs cut out for it (been in the wardrobe since 87  just never got round tuit.

FunFlyers postings have spurred me into having thoughts of actually building it. Watching the progress and thankyou.

Still have the magazine. 

rf 4.jpeg

Edited By John Wagg on 15/11/2019 19:41:11

Peter Miller15/11/2019 20:44:51
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10310 forum posts
1231 photos
10 articles

Hi John

I would suggest phoning George at 4-Max. He will give you great advice.

**LINK**

John Wagg15/11/2019 20:53:39
13 forum posts
2 photos
Posted by Peter Miller on 15/11/2019 20:44:51:

Hi John

I would suggest phoning George at 4-Max. He will give you great advice.

**LINK**

Thank you very much Peter. Will do.

Cheers

Fun Flyer15/11/2019 21:51:55
293 forum posts
38 photos
Posted by John Wagg on 15/11/2019 19:39:36:
I have all the wood, canopy and even the ribs cut out for it (been in the wardrobe since 87 just never got round tuit.

FunFlyers postings have spurred me into having thoughts of actually building it. Watching the progress and thankyou.

Still have the magazine.

If you have all the bits then you're half way there John. Start building and you might be flying before me. I warned you that mine could be a slow build.

+1 for 4-Max.

Fun Flyer15/11/2019 21:53:11
293 forum posts
38 photos
Posted by Peter Miller on 15/11/2019 18:15:26:

The leading edge strip is easy too. Champher the lower edge to match the ribs. glue in place. Plane the top down to match the top of the ribs. Oiece of cake!!

Easy for you to say Peter! smiley

Peter Miller16/11/2019 08:18:16
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10310 forum posts
1231 photos
10 articles
Posted by Fun Flyer on 15/11/2019 21:53:11:
Posted by Peter Miller on 15/11/2019 18:15:26:

The leading edge strip is easy too. Champher the lower edge to match the ribs. glue in place. Plane the top down to match the top of the ribs. Piece of cake!!

Easy for you to say Peter! smiley

TRust me! I spend a lot of time developing the quickest and easiest way of doing things because I am lazy and like to build fast.

Fun Flyer23/11/2019 10:58:15
293 forum posts
38 photos
Posted by Peter Miller on 16/11/2019 08:18:16:
Posted by Fun Flyer on 15/11/2019 21:53:11:
Posted by Peter Miller on 15/11/2019 18:15:26:

The leading edge strip is easy too. Champher the lower edge to match the ribs. glue in place. Plane the top down to match the top of the ribs. Piece of cake!!

Easy for you to say Peter! smiley

TRust me! I spend a lot of time developing the quickest and easiest way of doing things because I am lazy and like to build fast.

Henry Ford is reputed to have said that lazy people made the best employees because they would always find the quickest and easiest way to do thing!

Fun Flyer23/11/2019 10:59:31
293 forum posts
38 photos

2019-11-22 18.19.14.jpg

The dreaded leading edge is at last in place and the lower sheet attached.

Peter Miller23/11/2019 15:19:16
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10310 forum posts
1231 photos
10 articles

Well it looks fine. Was it the hassle you thought it was going to be?

Fun Flyer23/11/2019 22:07:38
293 forum posts
38 photos

It probbably would have been easier if I had given the LE a basic shaping before attaching it but some brain cells must have had a day off so I didn't think of it.

Now on to the spar webs.

Peter Miller24/11/2019 08:18:59
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10310 forum posts
1231 photos
10 articles

I chamfer the lower edge to mmatch the ribs before fitting and then I shape the top once the glue has dried.

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