Re: MINIMOA MO2a 3.5 SCALE
Posted: 05 Feb 2021, 00:33
Continuing with the canopies...(This early enough for you, Barry?)
BC
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MINIMOA MO2a 3.5 SCALE
Page 4 of 7
Re: MINIMOA MO2a 3.5 SCALE
Posted: 05 Feb 2021, 09:22
That's better, mustn't let standards slip..
BC
BC
Re: MINIMOA MO2a 3.5 SCALE
Posted: 06 Feb 2021, 10:09
With the canopy parts stained, time for a regular progress check...
Re: MINIMOA MO2a 3.5 SCALE
Posted: 06 Feb 2021, 16:33
Beautiful!
Re: MINIMOA MO2a 3.5 SCALE
Posted: 07 Feb 2021, 10:09
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...
Re: MINIMOA MO2a 3.5 SCALE
Posted: 07 Feb 2021, 11:40
Chris could you explain how you go about making the canopies,
what materials etc.
what materials etc.
Re: MINIMOA MO2a 3.5 SCALE
Posted: 07 Feb 2021, 13:26
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.
Re: MINIMOA MO2a 3.5 SCALE
Posted: 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...
(The balsa plug on the MO2a was possible because it was so small)
Barry from Sarik will verify this...
(The balsa plug on the MO2a was possible because it was so small)
Re: MINIMOA MO2a 3.5 SCALE
Posted: 07 Feb 2021, 23:50
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.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...
(The balsa plug on the MO2a was possible because it was so small)
Re: MINIMOA MO2a 3.5 SCALE
Posted: 08 Feb 2021, 09:52
Last job now: the ailerons... Note that the aileron false LE is drilled out against the wing for the hinges before construction commences.