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Jet Provost 1.5metre Andy Blackburn PSS Plan

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Andy Meade22/08/2019 13:17:22
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No one jumped on any colour schemes yet? I'm still fairly undecided.

David Gilder22/08/2019 13:40:20
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Posted by Andy Meade on 22/08/2019 13:17:22:

No one jumped on any colour schemes yet? I'm still fairly undecided.

Not yet. I think though we should all copy Phil's and go orange! At least they are visible in the "Sea Mist" so you don't need to land!

Andy Meade22/08/2019 15:55:45
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2597 forum posts
679 photos

I fancy the RAF camo version here :

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Or maybe a RNZAF Strikemaster scheme :

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Martin Gay22/08/2019 16:03:18
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130 forum posts
51 photos

Why not add something special to it?

**LINK**

Andy Meade22/08/2019 16:04:38
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2597 forum posts
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Yeah it would be nice, but I'd have to do that with a brush and I don't think she's big enough for it really!

Edited By Andy Meade on 22/08/2019 16:04:51

Peter Garsden22/08/2019 22:37:52
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1529 forum posts
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I met Phil tonight in Leek who handed over the woodpack and a plan. I already have 2 plans and therefore I don't need my plans - so if anyone wants a set of plans, I can post them to you. Cost £12 including postage. PM me.

I have checked the plans and they are identical. Mine is accurate to within .5mm. So the SLEC plan is perfect and matches the laser cut wood pack.

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David Gilder22/08/2019 23:47:13
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1854 forum posts
656 photos

So is it finished yet Peter?

I have started gluing sheets together for the wing skins.

Not going to bother with a blog for mine as I always forget to take pics and update them.

Peter Garsden23/08/2019 08:11:52
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1529 forum posts
1097 photos

Finished? Course it is.

Peter Garsden27/08/2019 23:11:05
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1529 forum posts
1097 photos

Not much progress other than to start with the tailplane - never started with that before.

As the tailplane is exactly 4 inches wide and the same width as my wood, I decided to make cardboard templates to draw round. It is probably less work than sticking the plan to the wood and cutting round that but hey ho

I won't make templates for everything - most of the parts are already cut out in the laser cut short kit, but for anything else, I will use carbon paper under the plan.

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So now all the parts are cut out to size and are drying overnight pinned to plan using aliphatic resin, which is best for butt joints imho.

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Incidentally, the plan covering is florist wrapping which comes in a roll. It is a bit thin to be honest but does work.

Edited By Peter Garsden on 27/08/2019 23:12:16

Andy Meade28/08/2019 08:46:14
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679 photos

Good to see a start Pete. What's the process you use with the carbon paper? Stack the plan / carbon paper / wood and draw over the top?

Peter Garsden28/08/2019 17:32:06
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1529 forum posts
1097 photos

That's the one Andy, though with the tailplane it was Plan/Carbon Paper/Cardboard, then cut out cardboard and draw round onto wood. I did that because the plan would have been impossible to line up with the wood.

Peter Garsden28/08/2019 17:34:51
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1529 forum posts
1097 photos

This is a link for the florist cellophane plan covering -**LINK**

Peter Garsden29/08/2019 09:15:40
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1529 forum posts
1097 photos

I glued the 2mm bottom wing sheets together with aliphatic and let them dry overnight, then took the masking tape off first thing before work. To mark out the position of the spar and ribs on the bottom sheet, the easiest way is to extend the lines beyond the leading and trailing edges as I always cut the wood slightly oversize to allow trimming afterwards.

I took the sheet off the board to chamfer the trailing edge with the sanding disc. Makes it so much easier having different lengths of steel ruler

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I find V5 roller ball pens the best for marking. Using pencils they get blunt too quickly.

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I then too the laser cut ribs off the sheet and did a dry run fitting. Very accurate cutting - needed very little easing. Very impressed.

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I notice that R7 to R10 are short, we will have to make up some dummy ribs for the ailerons, also make up the 3/16 leading edge and sub spars from scrap - should not be a problem.

Edited By Peter Garsden on 29/08/2019 09:17:44

Bob Jennings 129/08/2019 10:10:10
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140 forum posts
221 photos

Hi Pete, I use a trusty red BIC and lightly pass it over the wood so as not to damage the grain at the rib position. Just a thought. Well done for getting this started. It's already looking familiar. Not sure when I'll get around to making my 'Big brother JP'. Hope you decide to install the twin lights in the nose.

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Edited By Bob Jennings 1 on 29/08/2019 10:30:31

Piers Bowlan29/08/2019 12:19:33
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1826 forum posts
44 photos

Nice scheme Bob yes.

Peter Garsden29/08/2019 18:31:19
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1529 forum posts
1097 photos

And that was a competition winner if I am not wrong Mr Bob? I just wish I had the patience.

Peter Garsden30/08/2019 08:04:23
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1529 forum posts
1097 photos

Bob's JP was indeed a competition winner for best static display. To reminisce I looked up the old article on the Mass Build and noticed it was penned by Matt Jones - that chap we used to see but sadly we bump into very rarely. - this is the link - **LINK**

Anyway back to the build. Just as well, I read the plan carefully as BEFORE PUTTING THE WING TOGETHER ONE HAS TO JOIN THE SPARS WITH THE NEW DIHEDRAL BRACES - BEWARE - in the old version the brace slid in after making each wing.

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It is done over the plan. It is important to get this accurate of course as it dictates the line up of the wings etc.

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Andy's attention to detail is immense - the words are quite clear, though I did read it several times when I was just about to glue up the ribs and spar.

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Peter Garsden30/08/2019 08:15:37
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1529 forum posts
1097 photos

Just as well I had 2 copies of each of the plan because whilst one is pinned to the table you cannot read the various helpful instructions or refer to other parts of the plan. This was invaluable because I needed to look at what was below the wing folded underneath and use my 2nd copy of the plan on my main bench.

I still have the old write up in Electric Flight on Andy's original JP if anyone wants a copy. I have it in pdf format. It is a bit different to the new model but still helpful. So PM me if you want a version as the magazine is no longer in print.

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Edited By Peter Garsden on 30/08/2019 08:16:24

Peter Garsden30/08/2019 08:23:45
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1529 forum posts
1097 photos

So once the spar had dried (I use Aliphatic), I assembled the wing using Super Phatic. What great glue it is. Cyano dries too quickly for me before you get the chance to position parts properly.

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That sticky outee spar might be tempting fate. Let's see if I can avoid snapping it.

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Those Graupner Pins are just ace - don't know how I ever managed without them. And coupled with the layer of cork tiles on the bench it avoids sore fingers as you try to push them in.

Peter Garsden30/08/2019 08:25:21
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1529 forum posts
1097 photos

Finally, one take the wing off the bench to cyano (yes it is just right for this job) the bottom sheet up to the underneath of the ribs. I use activator spray so it will hold properly.

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