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MINIMOA 1/4 SCALE

Let us all watch your new project progress.
Adam C
Posts: 38
Joined: 26 Oct 2017, 14:36
Location: Southampton

Re: MINIMOA 1/4 SCALE

Post by Adam C »

Watching, learning and enjoying.

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chris williams
Posts: 1302
Joined: 10 Mar 2015, 10:50
Location: Blandford Dorset

Re: MINIMOA 1/4 SCALE

Post by chris williams »

With the interior of the fuselage cleared out, F5a can be installed and the top sheeting applied. A card template is useful for determining the rough shape of the top decking, which is wetted up, taped into a curve, and ironed dry before fitting. I used 0.8mm ply on the prototype, but these days I would now recommend 0.6mm ply...
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chris williams
Posts: 1302
Joined: 10 Mar 2015, 10:50
Location: Blandford Dorset

Re: MINIMOA 1/4 SCALE

Post by chris williams »

Before the rear of the fuselage can be finalised, the tailplane must be put together. The basic frame has the top sheeting added first (because the tailplane tapers in thickness underneath); then the jig supports are spot-glued to it and the tailplane put inverted on the board whilst the bottom sheeting is applied. Both top and bottom sheeting overlap the rear spar to from a shroud for the elevator. The elevator's false LE is offered up at this stage to synchronise the holes for the Robart style hinges...
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chris williams
Posts: 1302
Joined: 10 Mar 2015, 10:50
Location: Blandford Dorset

Re: MINIMOA 1/4 SCALE

Post by chris williams »

Once the elevator false LE is hinged up, the TE & ribs can be added. Once complete, the elevator is sanded flush to the tailplane.
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chris williams
Posts: 1302
Joined: 10 Mar 2015, 10:50
Location: Blandford Dorset

Re: MINIMOA 1/4 SCALE

Post by chris williams »

Now it's time for the elevator actuation arrangement: Hopefully, the pics should be self-explanatory. Because the servos are difficult to access, they are mounted on a removable plate should any maintenance be required.
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chris williams
Posts: 1302
Joined: 10 Mar 2015, 10:50
Location: Blandford Dorset

Re: MINIMOA 1/4 SCALE

Post by chris williams »

Now the rear end of the fuselage can be closed up. Note the rudder cable guides that will be embedded inside the ply outer covering...
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chris williams
Posts: 1302
Joined: 10 Mar 2015, 10:50
Location: Blandford Dorset

Re: MINIMOA 1/4 SCALE

Post by chris williams »

Time now to put the rudder together: as I don't seem to have any pics of the process, I've used the ones from the 5th scale build, which, apart from the size, is pretty much identical...
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chris williams
Posts: 1302
Joined: 10 Mar 2015, 10:50
Location: Blandford Dorset

Re: MINIMOA 1/4 SCALE

Post by chris williams »

On the full-size, the gap between the rudder and the fuselage was covered by hinged plates on either side. In this instance, they are sprung-loaded to keep them flush to the rudder. As usual, card templates are used to make up the lower ply covering on the fuselage...
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tjarko
Posts: 14
Joined: 08 Dec 2019, 16:56
Location: Netherlands

Re: MINIMOA 1/4 SCALE

Post by tjarko »

Nice scale details!
Is the rudder counter weight functional?

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chris williams
Posts: 1302
Joined: 10 Mar 2015, 10:50
Location: Blandford Dorset

Re: MINIMOA 1/4 SCALE

Post by chris williams »

No, the model doesn't fly fast enough for it to matter...

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