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SHORT BROS NIMBUS SCALE 1:3.5

Let us all watch your new project progress.
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chris williams
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Location: Blandford Dorset

Re: SHORT BROS NIMBUS SCALE 1:3.5

Post by chris williams » 09 Jul 2019, 11:38

Good job, Jilles...have you calculated how much Pb you will need in the nose? !2Kg seems tad optimistic?

Jilles
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Re: SHORT BROS NIMBUS SCALE 1:3.5

Post by Jilles » 10 Jul 2019, 06:00

the model was weighted when is was all together. With all equipment includes except for 2 receivers it was 9.2 kg. required balance was close to 2 kg, but not cover and paint included in all this. The plan is to finish and paint tail bits and wings, prime the fuse, than workout the balance weight minus 10%. I made a plaster mould to cast the lead to fit in the 3D printed nose cone. I add only 90% of the required balance in the nose before it is fitted for good. The other 10% will be in a ballast chamber just behind F1 so I can adjust either way as deemed necessary.
I wish I could give the model to Crish W. because he is very good in finishing and I am just average in that department.
Because the wings are in one piece there needs to be a special box fabricated for the wing transport because the tray on my Toyota Ute is only 2.4 m long.

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chris williams
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Re: SHORT BROS NIMBUS SCALE 1:3.5

Post by chris williams » 10 Jul 2019, 08:51

Looking forward to the final result, Jilles...

Jilles
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Re: SHORT BROS NIMBUS SCALE 1:3.5

Post by Jilles » 11 Jul 2019, 03:03

Fitted the sliding window in the canopy. I had a scale 1:3 version in stock from TopModel Cz. The screws as specified as M1.2 but are actually M1
I did drill a test hole of 1 mm and found out they just fell through the hole. So a mini drill set was purchased and it worked out that a 0.8 mm drill did the trick
On the sliding window were two studs .These only allowed the sliding part to go into the rail by 1 mm only . I removed the studs so the sliding window can make full use of the groove depth in the rails. Hole were carefully drilled and rails fitted. All works well. There is however no lock in closed position so I presume if could be blown open by the airflow.
The finishing job of the model will now start in earnest.
Attachments
F107.jpg
F108.jpg
F109.jpg

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Cliff Evans
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Re: SHORT BROS NIMBUS SCALE 1:3.5

Post by Cliff Evans » 11 Jul 2019, 07:01

Great work as usual! Nice clear canopy!

Jilles
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Re: SHORT BROS NIMBUS SCALE 1:3.5

Post by Jilles » 05 Aug 2019, 06:23

Because I can only carry 2.4 m long wings in my Ute, a box had to be made to carry the 2.7m long gull wings. the Horz,stab/elevator will be housed inside as well. Some pictures attached.
The box is located on top of the existing canopy. Wings can be unloaded through the side . The canopy roof can still be lifted to access the models inside.
The Nimbus fuselage will fit inside the canopy. At the moment my 1:3.25 KA6E, 1:3 Fokker Baby and an electric glider are inside
Now returning to the Nimbus model for covering and painting
Attachments
CAB1.jpg
CAB2.jpg
CAB3.jpg
CAB4.jpg
CAB5.jpg

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Cliff Evans
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Re: SHORT BROS NIMBUS SCALE 1:3.5

Post by Cliff Evans » 05 Aug 2019, 08:06

That's great Jilles!!

Jilles
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Re: SHORT BROS NIMBUS SCALE 1:3.5

Post by Jilles » 19 Aug 2019, 02:26

More progress with the less popular painting job. The R.H. wing is completed and all three servo's installed. L.H. wing needs the red paint pathes added. Stab elevator completed, each elevator halve operated with a separate servo. Rudder and canopy painted as required.
I do follow the color layout as evident on the prototype pictures of around 1971. The exception are the ailerons, they are totally red instead of the tip only. This is for me has a practical reason, we go up to 2000ft and even a large model becomes then hard to see. Even more so on a blue sky background. A receiver servo tray was made. I use a Taranis system and need 10 channels so two receivers are required. it also gives me the opportunity for some redundancy. Each RX will operate one elevator halve and one side of ailerons. The picture shows the 2 RX units and a Vario on the main RX.
Looking for a dual power supply. two 3S Lipo's will supply power but need to find a way to have two reliable voltage regulatorsto 6V that can be connected parallel in the end to the RX units without breaking the bank.
Attachments
W62.jpg
one wing completed
W63.jpg
somebody is interested
W64.jpg
stab/elevator top
W65.jpg
stab/elevator bottom
W66.jpg
finished rudder
W67.jpg
finished canopy
W68.jpg
receiver tray

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Cliff Evans
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Re: SHORT BROS NIMBUS SCALE 1:3.5

Post by Cliff Evans » 19 Aug 2019, 08:40

Looking good Jilles.

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VinceC
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Re: SHORT BROS NIMBUS SCALE 1:3.5

Post by VinceC » 19 Aug 2019, 08:54

Nearly there, the assembly is going to be exciting and looking forward to it

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