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Mark’s Peggy Sue 2 Build

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Mark Elen04/10/2019 16:25:45
401 forum posts
738 photos

I Thanks Peter. I do try hard to keep it neat and tidy.

I have had the afternoon off work today, so lots done. Starting with a trip to my LMS (Gliders at Newark) for some Superphatic. - they didn’t have any, but I spotted this:

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I have a bit of a fetish for tools.....

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What a great bit of kit. I can see it’s going to be the ‘go to tool’ for engines and servos. I did some testing with it this afternoon:

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Then I got set up to start building the cowl:

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I was just about to start, then realised I still needed to make up and drill for the throttle linkage. I made this mistake on the Ballerina, it’s much easier to sort out without the cowl in the way.

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That’s it for now.... it’s beer o’clock. 😎

Cheers

Mark

Peter Miller04/10/2019 18:14:17
avatar
10247 forum posts
1225 photos
10 articles

That hole centre toollooks good,.I never bought one.

I have used a long series drill to do the job, these are drills about 6 inches long and work wellbut NEVER ever use them on a fast drill out of a hole. The drill promptly whips out to 90 degrees.

Paul C.04/10/2019 19:21:21
avatar
595 forum posts
150 photos

Looking good Mark great build blog. I note that you have gone for an inverted engine, I did the same on my Ballerina thought it looked better than side winder. Decided to fit remote glow lead as fingers and prop were getting way to close when removing the glow battery, if I remember correctly I lowered the tank slightly to get centre line of the tank to the carb. Not sure if I really needed to do that but I have had no problems will engine runs, Peter may have some advice on this.

Paul.

Mark Elen04/10/2019 19:42:19
401 forum posts
738 photos

Hi Paul,

Many thanks for your kind comments.

Yes, I have gone for an inverted engine. The set up is exactly the same as my Ballerina, and, exactly the same as the plan. Tank in centre of engine mount, it is a little higher than the centre line of the carb, with the engine inverted, but I have had no problems with the Ballerina. If this engine is anything like the one in the Ballerina, it’s just going to want to run and run.

Normally, the Ballerina engine will start first flick, every now and then it gets to see the starter😂

I’m considering putting a remote glow on this, but I have had no real issue on the Ballerina, the Saito plug is angled rearwards at about 45 degrees, so, as long as you are careful, your fingers are never too close to the prop at start up.

Cheers

Mark

Paul C.04/10/2019 20:01:16
avatar
595 forum posts
150 photos

Hi Mark, the Ballerina was the first inverted 4 stroke set up that I did so I was probably a bit over thinking the set up with the fuel tank 😂 . I fitted the remote mainly because I had one (swop meet) and the old glow stick I had was a pain to get on the plug, have since consigned it to the bin and bought a lipo glow stick which it way better. Keep up the good work 👍

Paul.

Nigel R04/10/2019 21:10:23
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3099 forum posts
479 photos

There's a tool I didn't know I needed. I'm not sure whether to thank you or curse you!

I sense the throttle run is not finished yet. Are you soldering on a z bend or similar?

Peter Miller04/10/2019 21:11:21
avatar
10247 forum posts
1225 photos
10 articles

I normally use a remote on an inverted engine.

Probably a good idea to drop the tank a bit on an inverted engine conversion.

I tend to use sidewinder because I am lazy.

Mark Elen04/10/2019 21:51:24
401 forum posts
738 photos

Hi Gents,

Nigel, your welcome mate 😂 Still a bit to do on the linkage. I like a dead straight run, so I will open out both formers at the ends to allow the snap link through, with just the centre former holding the rod in place. Photos to folllow.

Peter, I had my concerns about the tank position on the Ballerina, but, having flown it , the Saito doesn’t seem too concerned about the tank being a little high. I thought that I would have a lot of trouble with it flooding after the first tank of the day, but having used it, it seems to only need the starter for the first fire up, (not being able to prime it as the carb is inaccessible) once it has been run once, it will flick start every time after.

Cheers

Mark

Peter Miller05/10/2019 08:37:55
avatar
10247 forum posts
1225 photos
10 articles

Back in the old days I started everything by hand...and some of the diesel engines of the day could be pigs.

I also used to start my Super Tigre G21/29 speed engine on a 7 X 10 wood prop on 25% nitro by hand. Never bit me!!

Not I am lazy and have a small starter powered by a 6 cell nicad that works on up to.60 four strokes.

Mark Elen05/10/2019 19:10:15
401 forum posts
738 photos

Hi Peter,

I don’t like using the starter on my Ballerina, I’m always careful that it’s not flooded, but, normally, it needs the starter to drag some fuel through.

Bit more done today. Throttle linkage made up, so now I can get on with the cowling.

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Cheers

Mark

Mark Elen06/10/2019 16:02:39
401 forum posts
738 photos

Bit more done last night and today. I made a start on the cowl:

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There are lots of compound angles on the side pieces. One of these makes getting them close easier:

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As you can see, this gets used an awful lot. There are not many pieces of the build that doesn't see this at some point or other.

The side pieces are close, but not perfect. After about half an hour of fettling each, they are near enough.

I then proceeded to drill out all of the holes needed for fuel tank fill, exhaust pressure, crank vent, needle valve and low end needle. I used my trusty cutting tool that I made ages ago. Its much easier to do these whilst they are not attached to the airframe:

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They are now in and glue drying:

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Cheers

Mark

Peter Miller06/10/2019 16:43:41
avatar
10247 forum posts
1225 photos
10 articles

THat job is always a pain.I use the tilt table on my power scroll saw and lots of careful angled work with a sanding block.

The failures are saved for another model with a smaller cowldisgust

Mark Elen07/10/2019 18:43:11
401 forum posts
738 photos

Hi Peter,

I had a couple of failures with that. Now in the scrap box for future use.

Bit more done today:

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Seem to have spent a lot of time for not a lot of progress.

Cheers

Mark

Mark Elen10/10/2019 21:13:38
401 forum posts
738 photos

A bit more done over the last couple of days. I've got the snake outer holder pieces made up. It has taken 3 iterations to get the snakes somewhere near straight:

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Not finished yet, but getting there.

Cheers

Mark

Mark Elen13/10/2019 11:25:03
401 forum posts
738 photos

Bit more done, but I went off on a tangent. I got fed up with cutting myself on the hole cutting tool. Up till now, it has had a piece of electrical tape wrapped around it, so I set up a piece of Ali bar in the lathe and using my homemade knurling tool, set to work making some small handles:

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They are just stuck on with loctite retaining compound. I still need to make up a 9mm and a 13mm, and the tops still need facing off. They will all get done together once I change the Chuck back over to the collet chuck.

I made them long, so that they will fit in the collet chuck to resharpen if needed.

Cheers

Mark

Mark Elen13/10/2019 23:06:16
401 forum posts
738 photos

A little more done. Got the rudder and elevator servos in and the snake inners made up onto ball joints. Now starting one of my least favourite jobs, shaping the cowling:

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Cheers

Mark

Nigel R14/10/2019 12:56:18
avatar
3099 forum posts
479 photos

Looking good Mark.

You seem to do roughly the same routine as me for the snakes, i.e. a few scrap bits of 1/8 and keep at it until the snakes are nice and straight.

Textbook servo install, very neat.

That cowl will come into shape easily enough. A razor plane is a godsend for the job. Then some going over with the sanding blocks and suddenly it looks like a proper airplane.yes

Mark Elen14/10/2019 19:40:06
401 forum posts
738 photos

Thanks Nigel,

Still some work to do on the cowl, but it is coming along. I had some time off work today, so got started on the wing.

First job was to trace out so that I could build the other half:

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The lines are much easier to see than the photo shows.

Then I got on with making the hold down plates:

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Finally, I made up the patterns for making the ribs. I like the ‘sandwich’ method:

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Cheers

Mark

Mark Elen15/10/2019 10:25:52
401 forum posts
738 photos

I got a bit more done last night. Starting with a couple of, what I see as errors on the plan. (Maybe Peter can comment on these):

The leading edge sheet is shown butting up to the false leading edge in the sectional view, I'm sure, knowing Peters other builds, that this is incorrect. - Although it is shown going over the false leading edge in the plan view.

Before:

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After:

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The other one is the wing tip. The very tip is shown as being butted up to the tip, I'm thinking the sheet should extend to the tip and a couple of 1/8 strips on either side, as per the Ballerina

Before:

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After:

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I then got on with cutting out the blanks for the ribs. I have gone with a sort of hybrid sandwich method for this one. All of the blanks were cut about 1mm oversized to the pattern, that way I could make best use of the balsa without too much wastage:

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That is: 3 x 1/4", 2 x 1/2" and 16 x 3/32" that just now need the holes drilling and they are ready to sandwich together and shape up.

I've been thinking about how I'm going to get the holes for the front wing retaining bolts to line up with the 1/2" rib, because, once the ply plate is in, there will be no means of centring the hole to get it to line up. I may have a cunning plan. We'll see.

Cheers

Mark

Peter Miller15/10/2019 11:00:44
avatar
10247 forum posts
1225 photos
10 articles

Yes, the sheet should go over the leading edge and then the leading edge cap covers all of it.

Same with the tip,the sheet tip goes to the outline and just strips of thin sheet round the edge.

PM me with your email address and I will send you PDFs of the original drawing.

The way I mark the bolt holes is this.

1) I fit the Tee nuts into the ply plate when I make the plate.

2) I have short lengths of wing bolt sharpened to a point (A pencil sharpener works well) These are screwed into the Tee nuts so they just protrude a bit.

3) I line the wing up vary carefully and then press down. This makes and indentation in the wing. Drill through and open up carefully..

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