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Schleicher ASH31 4m

Let us all watch your new project progress.
MartinE
Posts: 121
Joined: 28 Oct 2021, 14:36
Location: Essex

Re: Schleicher ASH31 4m

Post by MartinE »

Youth :lol:

Cut down the wing joiner to length and sanded down to required thickness, then put another coat of resin on.
Attachments
20211228_161226.jpg
MartinE
Posts: 121
Joined: 28 Oct 2021, 14:36
Location: Essex

Re: Schleicher ASH31 4m

Post by MartinE »

The fuselage sheeting hasn't given me the nice shape I want, so having to fill (and will then sand down to a nice smooth finish).

This filler is really light/fine and sands easily.

With hindsight, some intermediate formers & stringers would have helped.
Attachments
20211228_161237.jpg
NSWanderer
Posts: 20
Joined: 08 Oct 2021, 20:22
Location: Way down there

Re: Schleicher ASH31 4m

Post by NSWanderer »

Hi Martin,

Interesting how the distances between the formers and stringers look quite reasonable on your plan - I'm surprised.
MartinE
Posts: 121
Joined: 28 Oct 2021, 14:36
Location: Essex

Re: Schleicher ASH31 4m

Post by MartinE »

I sanded down the filler and the shape is much smoother, still some areas to be reshaped but will do those when the top has been glassed.

Before I do that, the wings roots need to be lined up & bonded in - i used the wing-joiner & the location pins to make sure it all aligned.
Attachments
20211230_124519.jpg
20211230_124536.jpg
MartinE
Posts: 121
Joined: 28 Oct 2021, 14:36
Location: Essex

Re: Schleicher ASH31 4m

Post by MartinE »

The tailfin gets a bias skin of 25gsm glass on each side, before cutting & fitting to the fuselage.

To keep it light, I absorbed excess resin with a paper towel.
Attachments
20211230_124553.jpg
MartinE
Posts: 121
Joined: 28 Oct 2021, 14:36
Location: Essex

Re: Schleicher ASH31 4m

Post by MartinE »

As mentioned before, the elevator will have a live hinge - the Kevlar is 60gsm on the bias (I rolled the fabric to flatten it as much as possible).

Spray with adhesive & allow to cure before cutting the strip.

A 12mm wood chisel is used to make a depression in the foam, ready to accept the Kevlar, fixed in with 3m 75.

The spar cap is made up of multiple lengths of 80gsm uni-carbon, folded lengthways. Inserted into wing depression.
Attachments
20211230_144728.jpg
NSWanderer
Posts: 20
Joined: 08 Oct 2021, 20:22
Location: Way down there

Re: Schleicher ASH31 4m

Post by NSWanderer »

Your progress is impressive - should be flying by the first weekend of 2022!
:lol:
MartinE
Posts: 121
Joined: 28 Oct 2021, 14:36
Location: Essex

Re: Schleicher ASH31 4m

Post by MartinE »

:lol:

Still lot's to do, but it's certainly taking shape nicely.
MartinE
Posts: 121
Joined: 28 Oct 2021, 14:36
Location: Essex

Re: Schleicher ASH31 4m

Post by MartinE »

Cut the rudder off the tailfin and trimmed for a trial fit to the fuselage.
Seems to line up nicely, vertically & lengthwise.
Attachments
20211231_122334.jpg
MartinE
Posts: 121
Joined: 28 Oct 2021, 14:36
Location: Essex

Re: Schleicher ASH31 4m

Post by MartinE »

Added the balsa sheeting above the wing roots and then glassed the top surfaces (100gsm bias).
Attachments
20211231_133725.jpg
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