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March 19, 2019, 21:26:43 PM

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Author Topic: ASW 15 build - 3m elctric glider  (Read 468 times)

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Offline Triman

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ASW 15 build - 3m elctric glider
« on: February 22, 2019, 19:00:07 PM »
I wanted a winter build, with a more focus on balsa. I found a plan on Etsy for this ASW 15 glider, 1:5 scale. The plan is produced by Tom Martin in the US.
Being a sucker for punishment I decided cut all the formers myself rather than get them laser cut.
I intend to put an electric motor up front, so I can can fly both from the flat and on slope.

Offline EricF

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Re: ASW 15 build - 3m elctric glider
« Reply #1 on: February 22, 2019, 20:24:08 PM »
Hello there Triman,

A nice bit of balsa bashing going on there. Looks like a very interesting project.
I have an ASW17, 1/4 scale, which needs a repair when I eventually get around to it!

You may wish to also post on Scale Soaring UK in the Forum under the Build Thread section, as the guys on there are always interested in new builds. https://scalesoaring.co.uk

Maybe when it's finished you'll bring it down to the slope at Thurnham so we can see it in the flesh; we often get guys from Essex visiting us here in Kent, as there aren't many sloping sites in your county.

All the best.  :)
I'm not old, I've just been young for a very long time!

Offline Triman

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Re: ASW 15 build - 3m elctric glider
« Reply #2 on: February 23, 2019, 07:44:17 AM »
Hello Eric,

Thurnham will be my first choice for it's maiden. You may not remember me but I have been down before - I thought you were Jeff! I've the 3m Flamingo.

Build is going well so far, a bit addictive in fact😁

Offline EricF

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Re: ASW 15 build - 3m elctric glider
« Reply #3 on: February 23, 2019, 08:19:47 AM »
Yes, I remember you now.  :af
I'll be following your build with interest - nice to see the traditional construction.
I'm not old, I've just been young for a very long time!

Offline Triman

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Re: ASW 15 build - 3m elctric glider
« Reply #4 on: March 01, 2019, 16:54:23 PM »
The sheeting stage has taken far longer than I thought it would, cutting, trimming then gluing the panels on! The nose block has been added and shaped - it's not a full nose as I intend to install a motor and spinner.

The joins are particularly good on the bottom, but they will be filled before the glass cloth goes on.

I'll make the tail-fin and attach it then glass the whole fuselage with 80g/m cloth.

Offline Triman

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Re: ASW 15 build - 3m elctric glider
« Reply #5 on: March 01, 2019, 17:01:26 PM »
A couple more photos of the sheeted fuselage - the ASW 15 has some nice lines around the rear of the cockpit and under the wing, which have come out quite well.

Offline Triman

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Re: ASW 15 build - 3m elctric glider
« Reply #6 on: March 14, 2019, 19:12:34 PM »
The next task was to put the tail together and attach it to the fuselage.

This is where I departed from the plan - I want to have the tail fully sheeted, so had to come up with a slightly different design. The profile I choose was the NACA 0090.

I made the tail bell-crank from 2mm fibreglass sheet.

Offline EricF

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Re: ASW 15 build - 3m elctric glider
« Reply #7 on: March 15, 2019, 15:44:55 PM »
Looking good!  :af
I'm not old, I've just been young for a very long time!

Offline Triman

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Re: ASW 15 build - 3m elctric glider
« Reply #8 on: March 15, 2019, 17:11:16 PM »
Thanks Eric,

I'm really enjoying making it. The fuselage has come out straight, which is always a worry with this sort of build.
Total weight has come out around 350g, which thought was quite light, for it's size.

Next job will be to glass it, so weight will be going up, but should be a lot stronger.

Martin


Offline Triman

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Re: ASW 15 build - 3m elctric glider
« Reply #9 on: Yesterday at 17:48:24 »
Next up was the wing mount on the fuselage;

The wing ribs were printed and then stuck to the ply, then cut-out and epoxy'd into place (using the brass tube to get the correct alignment.
The gaps were then filled in roughly with balsa bits then sanded.
I then used P38 car filler (thx to Chris Williams for that tip), to get the final shape.

Total fuselage weight so far 357g

 

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