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Member postings for Paul Johnson 4

Here is a list of all the postings Paul Johnson 4 has made in our forums. Click on a thread name to jump to the thread.

Thread: Warbirds Replicas P51 Mustang
03/01/2021 08:43:42

In case anyone is interested I obtained a set of these cheapy taps and dies to make all my threaded rods where needed.

tap and die set.jpg

03/01/2021 08:40:42

A small 'GOTCHA' to be aware of is where I passed the snakes through the rear of the fuz I took the elevator snake to the top of the balsa but not through the ply inner.

snakes fitted 3.jpg

Now this is fine for the rudder as all aligns well but for the elevator it's a little too low.

When you come to do this you might want to go a little higher through the ply or as in my case made a little offset rod to connect it up. It needs to go on the very end of the horn. This still gives lots of elevator movement so no worries of not enough throw.

elevator offset.jpg

Most of my warbirds usually have no more than about 5mm to 8mm of throw for normal flying. That's plenty for most scale warbird flight.

03/01/2021 08:26:27

Well guys it just had to be done... added a radiator cowl door.

radiator outlet1.jpg

radiator outlet2.jpg

used some scrap 1/8" ply from the kit to form the sides and the piece of balsa removed from the cut out.

Two reasons I added it, one it looks the part and two the incoming cooling air from the chin inlet will create a through draft to help keep all the electronics cooler.

01/01/2021 14:19:49

You'll be fine, don't try to rush to 'keep up' the real magic happens when it gets painted.

01/01/2021 13:37:50

Look at the flap droop... just like the real thing.

Did I say flaps? I think they maybe air brakes...

It was sure worth the extra work to have no gapping slit trench on the top of the wing.

flap drop.jpg

01/01/2021 13:34:15

Tail infill trimmed

tail infill sanded.jpg

01/01/2021 13:32:43

Well here in the undergrowth we find a new P51B taking it's first steps a little unsteady on it's spindly legs.... look out it's being stalked by a predatory reindeer...... yes I have lost the plot.

first steps.jpg

31/12/2020 21:26:47
Posted by Graham R on 30/12/2020 13:43:40

Did I see a box of celebrations in one of your pictures. Must be a shortage of Haribos due to everybody building during the lockdown.

Empty mate your too late...

Did a trial fit of the tail now the wing is finished.

trail fit of tail.jpg

All sanded covered, hinged and glued together now I can use the wing to check alignment.

tail covered, hinged and glue on.jpg

Still a lot to do to finish the Fuz but see the light at the end of the tunnel... Pilot looks indignant needs painting.... still.

30/12/2020 10:22:08

Hi Gordon

I got it from hobby King, very useful.

And yes the laminate adds a lot to the strength

30/12/2020 10:07:13

Next I just had to advance the fuz..

Bottom sheeting going on.

sheeting bottom of fuz.jpg

Then it happened I couldn't help it it had to be done.......

instrument panel.jpg

Pilot base trimmed and glued on.

pilot base fixed and trimmed.jpg.jpg

Seat fitted along with radio box. Pilot is not fixed as needs painting but had to try it out..

pilot needs painting.jpg

30/12/2020 10:00:00

Well progress....

The wing is complete all but the control horn links.

I used film as per Grahams film covering master class but found that if you did get any lines/wrinkles turn your iron up to 150 to remove any remaining defects, Don't start with a hot iron as it makes it a little more prone to putting in wrinkles. As I had already covered the flaps/ailerons I found the narrower film allowed me to cover the wing. top then bottom in one piece.

film covering layout.jpg

Wing all done...

completed wing.jpg

30/12/2020 06:59:37

Eric,

The rib in this picture was removed and straightened and scrap 1/8" used to go behind the spare nearest the leading edge the support it till the skins went on. But it shows how I did it.

wing almost assembled fitting r1.jpg

30/12/2020 06:46:17
Posted by Paul Johnson 4 on 29/12/2020 14:19:09:
Posted by Martin Harris - Moderator on 28/12/2020 23:34:24:

Slightly more worrying - although it may well be camera related - is what looks like a marked twist in the wing in your first photo, Paul...might be worth checking?

Same both sides.... wash-out.

Martin,

The camera does exaggerate the amount it's about 2° but Richard's design also incorporates a clever feature in the wing which helps to reduce tip stall....sshhh top secret.

smiley

29/12/2020 14:19:09
Posted by Martin Harris - Moderator on 28/12/2020 23:34:24:

Slightly more worrying - although it may well be camera related - is what looks like a marked twist in the wing in your first photo, Paul...might be worth checking?

Same both sides.... wash-out.

28/12/2020 06:39:08

Guys

A quick bit of info.

For some reason I see some of your posts then they dissappear I have emailed the forums tech help. If in the meantime you want to ask me a particular question pm me to make sure I can see it.

I let you know if and when it gets resolved.

27/12/2020 21:03:30

Wing Dowels make sure you us a couple of pieces of the thin (from the wing fairing) ply to pack the wing when gluing on the locating dowels. Mine is different as this kit had a ply plate yours will not. it's not really needed as the dowels will fit into the front spar so this plate wasn't necessary but I had it so I used it.

locating dowels.jpg

Leading edge finished.

leading edge finished.jpg

Okay been fitting the wing fairings. be liberal with the amount of cuts to ease the fitting to the curve and as per the manual fit them with the wing in place. don't forget the plastic/cling film to prevent gluing them to the wing.

wing fairing cuts.jpg

All sanded to profile.

wing fairing sanded.jpg

Still a long way to go but...... hey I'm in front of you guys...cheekycheekycheeky

27/12/2020 20:48:50

Hi All.

Jonathan. for some reason I only see your posts once on my mobile then they vanish???

But to answer your request.

wing tip.jpg

wing tip 2.jpg

20/12/2020 19:21:55

Graham

Can I sell you any balsa shavings? Very rare.... very cheap £100?

20/12/2020 18:53:37

Oh and I think due to the Balsa shortage I have found a good opportunity to become a millionaire overnight here....

£100.00 a bag

for sale.jpg

20/12/2020 18:45:04

Okay now I know a lot of you have received your kits... so who's done what?

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