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MINIMOA MO2a 3.5 SCALE

Let us all watch your new project progress.
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chris williams
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Joined: 10 Mar 2015, 10:50
Location: Blandford Dorset

Re: MINIMOA MO2a 3.5 SCALE

Post by chris williams »

Continuing with the canopies...(This early enough for you, Barry?)
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Barry_Cole
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Joined: 10 Mar 2015, 09:30
Location: Hampshire UK

Re: MINIMOA MO2a 3.5 SCALE

Post by Barry_Cole »

That's better, mustn't let standards slip.. 8-) 8-) 8-) 8-)

BC

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

Re: MINIMOA MO2a 3.5 SCALE

Post by chris williams »

With the canopy parts stained, time for a regular progress check...
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Dave Mackintosh
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Joined: 26 Dec 2020, 19:02
Location: Cambridgeshire

Re: MINIMOA MO2a 3.5 SCALE

Post by Dave Mackintosh »

Beautiful!

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

Re: MINIMOA MO2a 3.5 SCALE

Post by chris williams »

Thank you, Dave... the front canopy can now have the ply sheeting added and the whole shebang faired into the fuselage. Note that the balsa former for the top of the canopy was for the PETG moulding, which is available from Sarik Hobbies...
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Martin Gough
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Joined: 03 Mar 2017, 23:21
Location: Cheshire

Re: MINIMOA MO2a 3.5 SCALE

Post by Martin Gough »

Chris could you explain how you go about making the canopies,
what materials etc.

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Cliff Evans
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Joined: 29 Dec 2019, 15:13
Location: Bristol
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Re: MINIMOA MO2a 3.5 SCALE

Post by Cliff Evans »

I now finish all my canopies with Novol two pack polyester finish. It is not affected by the heat of the vacforming at all. The Plugs are made from MDF so, nice and solid. Just spray directly on to your plug and flatten off with 320 grit then finish with 6-800 grit.
Novol Polyester two pack spray filler.
Novol Polyester two pack spray filler.
https://lasercutsailplanes.co.uk
https://patteaklegliders.co.uk

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

Re: MINIMOA MO2a 3.5 SCALE

Post by chris williams »

I have always made my plugs/formers from blue foam, wrapped in parcel tape, glassed with mat & polyester resin, then finished off with filler etc. Trouble is, you have to make sure that the glass and mat is thick enough to prevent the heat from melting the foam during the pulling process.
Barry from Sarik will verify this... 8-)

(The balsa plug on the MO2a was possible because it was so small)
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Jolly Roger
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Joined: 30 May 2015, 20:35
Location: Sutton Bank, North Yorkshire

Re: MINIMOA MO2a 3.5 SCALE

Post by Jolly Roger »

chris williams wrote:
07 Feb 2021, 17:17
I have always made my plugs/formers from blue foam, wrapped in parcel tape, glassed with mat & polyester resin, then finished off with filler etc. Trouble is, you have to make sure that the glass and mat is thick enough to prevent the heat from melting the foam during the pulling process.
Barry from Sarik will verify this... 8-)

(The balsa plug on the MO2a was possible because it was so small)
Yes, very upsetting when the plug is crumpled by the vacuum machine. 5 layers of 100gsm cloth and resin over blue foam nowhere near strong enough.
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chris williams
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Location: Blandford Dorset

Re: MINIMOA MO2a 3.5 SCALE

Post by chris williams »

Last job now: the ailerons... Note that the aileron false LE is drilled out against the wing for the hinges before construction commences.
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