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Schleicher ASH31 4m

Let us all watch your new project progress.
MartinE
Posts: 54
Joined: 28 Oct 2021, 14:36
Location: Essex

Re: Schleicher ASH31 4m

Post by MartinE »

Final decision on the tail boom:

1 layer if 100gsm Kevlar at 45deg
4 lengths of 80gsm uni-carbon
Final layer of 50gsm glass, to lay down all the rogue Kevlar fibres
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20220103_123551.jpg
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SedB
Posts: 97
Joined: 14 Nov 2019, 09:17
Location: Netherlands

Re: Schleicher ASH31 4m

Post by SedB »

No idea, but guess that's well enough for belly landings!? :)
How easy/difficult was is to place the 100gr glass. All I uses so for was 50, and that I already found a bit of a pain in the corners..
Guess the fun job still has to come; sanding it all smooth? I'm curious what other treatments you'll for the fuselage covering (sanding, filling, priming).
Looks really nice so far!

Daniel
MartinE
Posts: 54
Joined: 28 Oct 2021, 14:36
Location: Essex

Re: Schleicher ASH31 4m

Post by MartinE »

Hi Daniel,

It feels pretty strong now. Now I need to remove some of the bumps and then fill and sand (as I did to the bottom).

The 100gsm glass is relatively easy to lay on a large fuselage like this. Spraying fuselage with a light coat of 3M 75, before laying, makes the resin application a lot easier, as the cloth does not move.
NSWanderer
Posts: 20
Joined: 08 Oct 2021, 20:22
Location: Way down there

Re: Schleicher ASH31 4m

Post by NSWanderer »

MartinE wrote: 04 Jan 2022, 16:16 Spraying fuselage with a light coat of 3M 75, before laying, makes the resin application a lot easier, as the cloth does not move.
That's a great trick - thanks!
MartinE
Posts: 54
Joined: 28 Oct 2021, 14:36
Location: Essex

Re: Schleicher ASH31 4m

Post by MartinE »

In order to get the desired nose fit, I bought the GM spinner and 17x10 scale blades.

These are designed to fit the shape of the fuselage (and are already coloured white, obviously :D ).

Whilst not cheap (£60 for spinner & colet), they very well made, with the spinner in carbon fibre.
Attachments
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MartinE
Posts: 54
Joined: 28 Oct 2021, 14:36
Location: Essex

Re: Schleicher ASH31 4m

Post by MartinE »

To create the tail hinge, a carbon tube was glued into a slot in hard balsa, which was then glued to the fin, then shaped.
MartinE
Posts: 54
Joined: 28 Oct 2021, 14:36
Location: Essex

Re: Schleicher ASH31 4m

Post by MartinE »

2 fibre glass tabs were made (with a corresponding hole) then bonded into the tail.

Then the rod can be run down the tube, through the tabs to form the hinge.
Attachments
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20220109_151742.jpg
20220109_152659_001.jpg
NSWanderer
Posts: 20
Joined: 08 Oct 2021, 20:22
Location: Way down there

Re: Schleicher ASH31 4m

Post by NSWanderer »

Very neat, Martin.
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Barry_Cole
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Joined: 10 Mar 2015, 09:30
Location: Hampshire UK

Re: Schleicher ASH31 4m

Post by Barry_Cole »

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