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Piper Pawnee

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john stones 124/02/2016 17:23:07
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10380 forum posts
1475 photos

Looks great Richard, struts made it yes

John

Richard Harris26/02/2016 20:25:51
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2033 forum posts
1865 photos

Thanks John yes,

I popped it in my car and managed to grab a couple of flights after work today, it was cloudy with not much light but I did manage to capture a bit of footage.

Not the best as the camera was mounted to my transmitter so it was point and hope.

Rich

Steve Jones 226/02/2016 21:19:44
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498 forum posts
369 photos

sam_1983.jpgGreat job Rich, yet again, love the details and struts

Second the Uncanny suggestion, you need to fix yours and it's still the best Cannard....

Richard Harris13/03/2016 20:58:15
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2033 forum posts
1865 photos

She has now got 15 flights under her wings, most of those undertaken over the glorious weekend we have just had. Loops, rolls, stall turns and inverted flight have all now been explored with good results.

Today I handed the transmitter to club mate Andy who flew it for me so I could attempt to get some snaps, it was a little breezier but coped well.

So that's about it, the model will be flown regularly over this coming season which is what it was built for. Maybe I will get round to a larger version at some stage.

Rich

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Richard Harris09/04/2016 20:57:45
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2033 forum posts
1865 photos

My Pawnee flew its 40th flight this evening at the local park which happens to be just infront of the house. Wind was up and down and swirling through the trees but it handled ok considering. Managed to persuade young Debs out to piont the camera at the model, considering she is 32 weeks pregnant she did really well.

Rich
Stephen Jones09/04/2016 21:27:24
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2638 forum posts
1503 photos

Nice one Rich,

Not only looks good , flies nice too thumbs up

Steve

Richard Harris06/02/2019 09:31:19
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2033 forum posts
1865 photos

So, I have had my arm twisted by the editor for my little Piper Pawnee which will be included in the next issue of RCM&E. With that on course I am resurrecting this thread and will add a materials list over the coming weeks for any potential aerial farmers.

It replicates all the running gear from my Snap Dragon so costs are kept relatively low, like wise I see no reason why this couldn't be scaled up to suit what ever size you wish (maybe beef up the wing structure) as I am doing with my Snap Dragon right now.

You will be happy to know that the prototype still gets a regular airing.

Rich

FilmBuff11/02/2019 11:54:39
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244 forum posts
28 photos

Love this Rich - the mag landed today and will be a spring build for me.

Thing is - the plan has no dimension data for the wing components.

I'm too lazy to leave my home office and run a ruler over the plan...blush

Richard Harris11/02/2019 20:25:31
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2033 forum posts
1865 photos

FilmBuff,

I have not seen the magazine until it arrives in the shops but I generally add the wood type and thicknesses by each template so as not to clutter the building part of the plan up.

That said, you can really use what ever you have that's close, just keep the wood light and alter the slots in the spars and depth of R1 to suit.

To confirm on the wing, I used 1.5mm medium balsa for the ribs,wing tips, sheeting and gussets.

3mm hard balsa for the wing spars and 6mm medium sheet (cut to width) for the leading edge. Trailing edge section is 8 x 32mm but this could easily be sanded from sheet.

I look forward to your build thumbs up

Rich

Mark Kettle 113/02/2019 02:24:28
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2217 forum posts
1306 photos

I'm glad the editor twisted your arm Rich, it's a nice plan you have drawn.

Richard Harris22/02/2019 21:11:44
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2033 forum posts
1865 photos

Thank you Mark yes

Here are a few photos that didn't quite make the grade, they may or may not be of help to potential builders

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Peter Worthington 226/02/2019 21:30:13
2 forum posts

Hello,

Nice 'plane, I've decided to build one.

A few of queries from the plan. (Apologies if the answers are obvious.)

Two T1's? (One on the fuselage, a pair of them on the wing tips.)

Can't see a "Doubler 2" outline drawing - I'm assuming there should be one and it should go between F2 and F3.

Finally, plan shows a "Wing Spread Washer 0.8mm FG" whilst the picture on page 63 of RCM&E shows a "carbon tube"? I guess either would work.

Peter

Richard Harris26/02/2019 23:33:27
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2033 forum posts
1865 photos

Peter,

Glad to hear your going to give the Pawnee a go.

I will look at the plan tomorrow but I'm certain I drew both fuselage doublers, if I haven't I apologise.

The carbon tube is set into the fuselage and is the inner wing strut mounting point, you could use plastic or brass tubing for this. The spread washer is to spread the load of the m3 wing mount bolts on the underside of the fuselage. Again, I'm sure I drew these but I will check for you.

Rich

Chris Freeman 327/02/2019 04:15:34
192 forum posts
259 photos

That is very cute. Nice project.

Richard Harris27/02/2019 07:31:18
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2033 forum posts
1865 photos

Thanks Chris thumbs up

Peter,

I have pulled the plan out of the mag and you are quite correct, doubler 2 is missing which sits between F2 and F3. It must have been Gremlins in the system as my proof checked plan clearly had this doubler included as you can see below (the one on the left is the proof, right is the mag).

No problem though, just PM me your email address and I will send over a PDF with the doubler on (and anyone else who wants it).

Sorry for any confusion, these things happen.

Rich

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Peter Worthington 229/03/2019 18:03:23
2 forum posts

Hello again Rich,

Call me picky (some people do!) but I've come across another irregularity in the published plans.

On the top view of the fuselage, the Cowl Front measures 74mm in width, whereas the separate item drawing it's around 68mm. I suspect the double 1.5mm balsa sheet on each fuse side hasn't been taken into account?

I suspect not a problem for most builders as an over-size part would probably be used to start with before getting the Permagrit block out. I am fortunate enough to have access to a laser cutter however, and using the item drawing would have left me short.

(Yes I'm flogging my way though the plans, generating laser cutter files.)

Respectfully,

Peter

Ian Shaw25/04/2019 14:37:51
12 forum posts

Hi Rich,

Thank you for the great plan in RCM&E, it looks like a good one to learn some basic building skills on.

I've decided to build one of these Pawnees for my Grandson as Disney's Dusty Crophopper. I plan to square off the wing tips (possibly add another bay to each wing span wise), square off the tail surfaces and fin. I'm not an experienced builder and am a bit confused as to how to mount and position the ancillaries such as motor, ESC and battery as I cannot find any such detail on the plans. Also I cannot find any photos of any of these things as they are mounted on your model. Is it possible please for you to show some construction shots or completed shots of these ancillary areas on your model to give me an idea of how to do it. Do you have any thoughts as to what effect squaring off of the wings and tail would have on the model's characteristics?

Thanks in anticipation

Ian

Torsten Spitzner25/04/2019 16:59:59
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16 forum posts
17 photos

Thats a neat little Pawneeyes

Richard Harris26/04/2019 09:38:21
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2033 forum posts
1865 photos

Hi Ian,

Sorry for the delayed reply. I'm sure squaring off the flying surfaces will cause no issues with the performance of the Pawnee. The only thing I would try not to do is reduce any of the tail surface / wing areas.

I look forward to your Dusty Crophopper conversion, keep it light.

Rich

Ian Shaw26/04/2019 09:54:38
12 forum posts

Thanks Richard, you don't have any photos of the internals of your Pawnee do you? Battery, ESC and engine mounting areas if possible to give me an idea how to install stuff.

Cheers

Ian

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