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Don't just stand there, get one up!

Tony Nijhuis 72" Spitfire

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Martin McIntosh11/02/2019 09:06:58
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2737 forum posts
1026 photos

Look at the Ohmen thread P6 for a link.

Martin McIntosh11/02/2019 10:19:09
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2737 forum posts
1026 photos

This is how I am fitting the flap hinges, also a pic of my original ones. The fus. is now much more advanced.

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Ivan Neumann11/02/2019 17:21:29
3 forum posts
3 photos

Martin, thank you very much. Photos are great. So if I understand, you put additional balsa between the spar and top sheeting. Once I have top sheeting done, I will put it there.

Martin McIntosh13/02/2019 20:04:15
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2737 forum posts
1026 photos

Another little snippet. I have cut and fitted the dummy cowl fixings using my Silhouette Portrait vinyl cutter. Not tried this before so hope that they stay stuck on and will take paint. Coated with thin clear dope.

Somewhere on this forum somebody told me how to get lettering using the Silhouette to exactly the right size without guesswork, but blowed if I can remember how to do it now. I shall need this info for the lettering and roundels.

spitfire 72.jpg

Martin McIntosh14/02/2019 21:17:24
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2737 forum posts
1026 photos

Got most of the Fus. and tail riveting done today. This time I decided to try some aliphatic from The Balsa Cabin instead of the usual PVA. This stuff dries very flat instead of a blob, but before doing any more I got impatient and tried painting over a small area to see the result. Looks fine to me, they should be quite subtle. The other pics really just show the pencil lines as the rivets are invisible without paint.

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Martin McIntosh27/02/2019 21:06:29
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2737 forum posts
1026 photos

Quite a bit more advanced now with the painting well under way. Lots of intricate masking here, and I still have the roundels, canopy and lettering to do. Managed to download some generic stencils which I have converted to water slides.

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Martian28/02/2019 20:48:47
2101 forum posts
1023 photos

it's looking fantastic Martin soon be finished and on to the next project

Colin Leighfield28/02/2019 20:55:58
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5714 forum posts
2359 photos

Brilliant job Martin, it is going to be a really well though out and realistic Spitfire, a great model.

Martin McIntosh28/02/2019 22:17:52
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2737 forum posts
1026 photos

Thanks. Don`t know about any next project though. I would need a much bigger house/garage/shed. Far too many as it is. Still got three unflown models.

Basic finish done and am now starting on the roundels using masking film.

I do tend to worry if everything will be OK radio wise at this stage, much more than in the past since even brand new servos etc. can fail. Must be age related.

Jon Laughton02/03/2019 11:32:44
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1148 forum posts
101 photos

Looking good Martin! are you off to see Spiros et al this year?

Jon

Martin McIntosh02/03/2019 19:12:58
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2737 forum posts
1026 photos

Hi Jon, I would love to go again if only just for the holiday. Circumstances did not allow me to go last year (eldest son returned to the nest and is costing me a fortune); also I found that the only really flyable things were foamies.

If I go again I shall have to do a deal with Spiros regarding how many days, if any, I wish to fly. Early June is the best bet.

Thanks for the comment on the Spit. Fingers crossed.

Danny Fenton05/03/2019 23:37:18
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8985 forum posts
3871 photos

Looking good Martin

Cheers

Danny

Martin McIntosh26/03/2019 20:17:43
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2737 forum posts
1026 photos

Here is the progress so far. Took a few snaps in the shed but will publish proper ones when (if) I get it finished. Just the exhaust stubs and oleos left to fit plus making the aerial, etc, etc. Had a little trouble setting up those retract servos because they have to travel exactly between the end stops. May look to changing the type although they work OK at the moment. The nav. lights which were fitted to this Mk have been put on the wing tips only since the rear white one was too much trouble to wire up. They are operated by a channel controlled switch when the gear is down.

A little problem with the Humbrol light grey. For some reason the underside of the fus. is quite different from the rest. This will all fade darker if it gets the chance.

The gear in the Fus. Masses or wiring. Oh for the days when we all only had four servos to share between models.spitfire 72 040.jpg

Set of bagpipes for the fuel. Fuel from tank to carb. via U piece;spitfire 72 041.jpg tank and crankcase vents.

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The business end.spitfire 72 043.jpg

The rather none scale driver`s door with hidden switch. Now you see me, spitfire 72 044.jpg

now you don`t.spitfire 72 045.jpg

The rear fus.spitfire 72 046.jpg

The tail end.spitfire 72 047.jpg

Before anyone points it out please, I know that the stencils are for a Mk. 9 not a 1A but they were all that I could find.

More soon.

Geoff Gardiner26/03/2019 21:17:20
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351 forum posts
605 photos

That's looking rather splendid Martin.

Have you managed to reduce the weight, relative to the first one that you made?

Geoff...

Martin McIntosh26/03/2019 23:01:07
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2737 forum posts
1026 photos

Thanks Geoff.

Well, I was trying to put off getting an all up weight until the very end but with all (well most) bits added including 270g of lead to get the cg at least close it comes out at 13lbs 4oz as against 18lbs on the same set of scales so I think that I have won there. Would have been happy with 16lbs. Forgot to weigh the bare wing but the bare fus. with control surfaces was 2lb 10oz (1200g).

Just weighed the original minus engine, prop, mount, spinner and cowl and it is 13lbs.

Martin McIntosh26/03/2019 23:17:47
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2737 forum posts
1026 photos

P.S.

I could lose a further 150g by using some non scale looking and slightly smaller 3.75" wheels. They would mean less lead up front as well but we shall see what the actual AUW is at the end of the day.

Martin McIntosh04/04/2019 16:23:01
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2737 forum posts
1026 photos

Now nearly completed, but: there was this wasp. I could hear the familiar low drone of a newly hatched queen but could not tell if it was outside or just emerged from hibernation in my shed. I used to be super sensitive to their stings so give them a very wide berth. Next thing I knew it was buzzing around my face very angrily because it could not find the way out. I fled for the door but unfortunately my fus. was propped up against the bench in between and in my haste it came a cropper, damaging a tail tip, a big dent at the top and worst of all the irreplaceable canopy was cracked. Dents done and currently trying to do something with the canopy.

The u/c doors have given me quite a headache since the retracts are very different on this one. I first tried to space them away from the legs but they looked awful. I have just realised that if I cut the wing slots wider they would fit easily without spacers so this has been done today. Currently painting them and that should be it.

I was hoping to get it to the field soon to take more pics, run up the Laser and maybe even maiden it but this will have to wait until the weather improves again.

Final weight is a very pleasing 13 lbs 2 oz (5.95 kg) with the lighter wheels fitted, a saving of 4 lbs 14 oz.. CG is spot on with the 270gm of lead in the nose and a composite prop.

Martian04/04/2019 16:44:12
2101 forum posts
1023 photos

That's a bitter blow Martin I hope you can restore it. An important thing to remember queen wasps as far as I know cannot sting it's best to try to stay calm and move to the door open it and it should find it's way out , obviously that's for any future event.

Martian04/04/2019 16:46:41
2101 forum posts
1023 photos

Correction they can sting but it is unlikely its the drones (males)that have no sting.

Martin McIntosh04/04/2019 17:12:48
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2737 forum posts
1026 photos

Easier said. I was trying to assemble the original wheel doors with m2 bolts at the time and the damned thing was about to land on my nose. A queen`s sting must be quite powerful since they use it to kill off rival newly hatched ones (or is that bees?). A few years ago a giant hornet at least 3" long emerged from the roof, a couple of feet from where I was working. It looked like a sparrow as it flew off over the house roof.

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