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1/6 Westland Whirlwind

P7056 "Pride of Yeovil"

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Timo Starkloff24/11/2018 17:48:03
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398 forum posts
885 photos

I had to order more balsa for the Whirlwind and future models. Normally I choose light selection, which is more expensive but much lighter. I started that on my 1/12 aircombat contest models and use it also on weight critical bigger models.

I made drawings for the nose parts (no red one, although Christmas is around the corner . Took me a whole evening, since I had to find the correct position of the cannons. I had a good side view, but had to search my drawings and pictures for a good front view. I'm not sure how many details I will add to the finished model, but applying the cannon holes later would be a huge effort.

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Timo Starkloff25/11/2018 10:56:39
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398 forum posts
885 photos

Looks a bit like a Christmas tree

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Timo Starkloff25/11/2018 10:57:23
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398 forum posts
885 photos

After sanding the fuselage look improved a lot!

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Edited By Timo Starkloff on 25/11/2018 10:57:43

Ron Gray25/11/2018 11:00:32
2177 forum posts
941 photos

Excellent work as usual Timo, I just love the amount of pins you use!

Timo Starkloff02/12/2018 17:51:36
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398 forum posts
885 photos

Really satisfying to see the result of long planning

Sometimes it really takes a few minutes to get all pins out before working further on the model. But much better than a displaced part.

Timo Starkloff02/12/2018 18:07:42
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398 forum posts
885 photos

I was also busy during November with drawing the wing. I need that attached to the fuselage before glueing the tail in place.

I always start with some basic drawings in the CAD, placing the wing spar, ribs and servos to get an early idea of difficult parts. The major decision concerning the Whirlwind was where to divide the 230 cm long wing: centre, beneath the nacelles or just the outer wing panels. Decision was last one. I also thought about the type of flap because the original one is just too complicated, I always try to design plans for beginners or average skilled model builders. Decision was for the split flap. I will have a big flap inbetween the nacelles and two small ones outside. That should be easy to build and represent a nearly scale look.. Original flaps opened just a bit for the start and then look 100% like split flaps. And on landing youonly see the front of the plane and the most important thing is then to have this huge central flap.

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Timo Starkloff02/12/2018 18:14:24
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398 forum posts
885 photos

The drawing above was made two years ago. Due to progress on tail and fuselage and partly the nacelles, I had to concentrate about the wing again. You should have an idea first before you start draings. CAD is a fine thing but it doesn't solve your problems or makes suggestions. Every plane is unique in certain details and I always try to find at least a good solution. Models which are not thought until the end very often present problems and delays during building.

When I'm sure about the basic design, I start thinking further about the parts. A simple pen and sheet are most helpful to save ideas.

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Timo Starkloff02/12/2018 18:18:00
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398 forum posts
885 photos

Bringing those ideas to the CAD drawing quickly shows what works and what not. Sometimes there is not enough place, other parts turn out to be too complicated. The easy solutions are the most difficult to find!

Except some minor small parts, this is the actual wing design and all parts to build that wing. Building will start this week

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Edited By Timo Starkloff on 02/12/2018 18:18:26

Edited By Timo Starkloff on 02/12/2018 18:18:58

Martyn K02/12/2018 19:09:48
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5084 forum posts
3678 photos
That is looking superb Timo. Wonderful craftmanship.

Will the plans be made available later?

Martyn
Chris Freeman 303/12/2018 14:28:06
353 forum posts
525 photos

Great work, I love the shape. They fly well, I had one that I built from the Peter Wilson plan and it had great performance. A very under rated aircraft.

Timo Starkloff11/12/2018 19:44:55
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398 forum posts
885 photos

Hello Martyn, I will make a plan for the Whirlwind, although it has to prove good flying characteristics first. I like to fill the gaps where plans for certain models are missing. It just takes a long time to get a plan finished. The real work always starts when the plane is finished. This time I try to update the parts of the plan during building, as soon as I find something to improve.

Hello Chris, good to hear that Do you have any pictures of your Whirlwind? I only found a few videos of Whirlwinds. I have seen 1/12 scale aircombat models flying, but they got a good hand start of course. The bigger models on the videos with a landing gear seem to have a good directional stability during start, just like the original.

Timo

Edited By Timo Starkloff on 11/12/2018 19:45:25

Timo Starkloff11/12/2018 19:47:17
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398 forum posts
885 photos

I'm still preparing parts for the wing which means cutting many ribs. And certain parts have to be reinforced before I can really start building the wing.

Timo

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Edited By Timo Starkloff on 11/12/2018 19:47:59

Chris Freeman 312/12/2018 13:00:58
353 forum posts
525 photos

Hi Timo

No pictures of the Whirlwind, one of the few aircraft that I do not have a picture of. I lost the airframe and the pictures in a house fire 5 years ago. Flying was a treat and much easier than I expected, Take offs and landings were quite easy and the shape was great in the air. I actually won a prize with it at one of our larger scale events in South Africa. It was for the most unusual aircraft.

Chris

Timo Starkloff25/12/2018 12:07:56
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398 forum posts
885 photos

Sorry to hear that about your house, Chris. But it's great that your Whirlwind had good flying qualities. After all, you always put much time and effort in self built models.

Preparing all ribs took more time than expected and time is always short before Christmas (many Christmas markets to visit at the weekends , but now I'm making good progress again.

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Timo Starkloff25/12/2018 12:11:17
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398 forum posts
885 photos

The outer wing is a little bit under 500 mm long, so I cut many 1.5 mm balsa sheets in half and glued them together to a long balsa strip. The construction is the same as on my TK4. The lower rear planking is cut and the rib positions are marked.

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Timo Starkloff25/12/2018 12:16:12
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398 forum posts
885 photos

Then the lower stringer is glued in position and afterwards all ribs. The center rib has to be placed in the right angle, so I use a small template for that.

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Timo Starkloff25/12/2018 12:23:18
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398 forum posts
885 photos

The next task will be the center wing and I started preparations for that. It's 1220 mm long and so I have to lengthen spars and other pieces. Splicing (correct word?) spars is something new for me, but something usual in aircraft construction, so it's time to learn that. I made a flat parcel from all four pieces and sanded them to a certain angle (30 mm in my case, the spar height is 3 mm). Then they are glued and kept pressed together during drying. The result is really satisfying, straight and stiff and quiet easy to achive

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Edited By Timo Starkloff on 25/12/2018 12:32:29

Edited By Timo Starkloff on 25/12/2018 12:32:58

Edited By Timo Starkloff on 25/12/2018 12:36:22

Timo Starkloff26/12/2018 19:19:40
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398 forum posts
885 photos

First I place a balsa strip on the work bench, which guarantees the right washout of 2° (helps for much better low speed handling). Then comes the wing itself.

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Timo Starkloff26/12/2018 19:31:15
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398 forum posts
885 photos

Afterwards I install all neccessary pieces before planking the upper side. All I have to do then is cutting out the aileron of the finished wing.

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Timo Starkloff26/12/2018 19:36:57
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398 forum posts
885 photos

Spar is spruce 2x5mm, planking and the sheet between the spars 1.5mm balsa, ribs are made from 3mm balsa except some reinforcements for the tube from 3mm poplar plywood. Wing thickness at the center is 14%, 10% at the outer end.

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