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1/4 Scale ASK21

Let us all watch your new project progress.
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GeeW
Posts: 47
Joined: 18 Mar 2015, 22:49
Location: Bracknell

Re: 1/4 Scale ASK21

Post by GeeW »

Peter
Don't cut off anything just yet! The fuselage does not follow a fair line under the fairing. There is a bit of a lip moulded into the belly of the fuselage to accommodate the main wheel fairing.
The fairing is on the workbench so no problem to grab some scaled images of that whilst I'm waving the camera about. The fairing is a strange shape as it is symmetrical on the fuselage join and is asymmetric at the bottom to allow space for the brake caliper.

Gordon

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Peter Balcombe
Posts: 1067
Joined: 18 Mar 2015, 10:13
Location: Clevedon, North Somerset, U.K.

Re: 1/4 Scale ASK21

Post by Peter Balcombe »

Thanks again Gordon.
I found a copy of the manual on the web when looking for the wheel sizes.
I had previously guessed that the incidence would be about 2 degrees, so that is good although the tailplane seat could be tweaked if necessary.
The wing dihedral is a bit more than I expected but that is easily dialled into the wing design design program when I finalise the joiner arrangement.

Whilst waving the camera about, could you please also point it at the tow release.
Although I think I will install the aerotow release in the nose pitot aperture, it would be good to see how prominent the real release is.
Peter

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Peter Balcombe
Posts: 1067
Joined: 18 Mar 2015, 10:13
Location: Clevedon, North Somerset, U.K.

Re: 1/4 Scale ASK21

Post by Peter Balcombe »

Gordon,
PM sent with contact details in case you wish to send full resolution pics.

GeeW
Posts: 47
Joined: 18 Mar 2015, 22:49
Location: Bracknell

Re: 1/4 Scale ASK21

Post by GeeW »

I was just about to ask..will send over later this evening as I am on cooking duties this evening.

Gordon

GeeW
Posts: 47
Joined: 18 Mar 2015, 22:49
Location: Bracknell

Re: 1/4 Scale ASK21

Post by GeeW »

Emails sent. I hope they are useful?
Just as a nod to anyone else following this thread I have ready access at the moment to several types of glider.

ASK-21 (both early and late types)
ASW-19b
Standard Cirrus (choice of 2)
DG-1000T
LS-4b
LS-4 (surprisingly different from the 4b, different fuselage fin and altogether) (choice of 2)
LS8-18 (or 15 or 15 with winglets)
Grob Twin II
Grob Astir CS
Glasflugel Libelle H201b
Shempp Hirth Nimbus 2 (choice of 2)
Slingsby Kestrel 20 (A 19 with stretched wings rather than the later MkII which is a different aeroplane)
Grob 109b
LAK 12

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Peter Balcombe
Posts: 1067
Joined: 18 Mar 2015, 10:13
Location: Clevedon, North Somerset, U.K.

Re: 1/4 Scale ASK21

Post by Peter Balcombe »

Lovely, many thanks Gordon :)
Peter

GeeW
Posts: 47
Joined: 18 Mar 2015, 22:49
Location: Bracknell

Re: 1/4 Scale ASK21

Post by GeeW »

Two more emails should be awaiting your pleasure in your inbox. :D

Regards

Gordon

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Peter Balcombe
Posts: 1067
Joined: 18 Mar 2015, 10:13
Location: Clevedon, North Somerset, U.K.

Re: 1/4 Scale ASK21

Post by Peter Balcombe »

Many thanks for all the pics and recent dimensions Gordon.
I now have a good scaled 3 view drawing of the wheel fairing, so will break out the foam or balsa shortly to make a more realistic 1/4 scale fairing.
Peter

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Peter Balcombe
Posts: 1067
Joined: 18 Mar 2015, 10:13
Location: Clevedon, North Somerset, U.K.

Re: 1/4 Scale ASK21

Post by Peter Balcombe »

Old main wheel fairing removed and underside of fuselage made good.
New fairing made and just glued in place (scaled from full size photos & dimensions kindly provided by Gordon).
Hopefully this looks more like a real fairing now (not that you probably see this view of a full size glider that often!!)
Fairing still needs to be faired in.
Attachments
C8ED2AED-1897-4EFE-AF7E-2A819DC3E481.jpeg
60D97284-543A-4E9B-BEAA-647B85D67ADE.jpeg

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Peter Balcombe
Posts: 1067
Joined: 18 Mar 2015, 10:13
Location: Clevedon, North Somerset, U.K.

Re: 1/4 Scale ASK21

Post by Peter Balcombe »

Main wheel fairing blended into the fuselage a bit better now.
A final check to fill the last few blemishes, then on with the pattern coat I think.
Attachments
CB5A47B8-DF3B-45B6-BE70-CFA29B4C8EB3.jpeg
53B56254-8AB4-4CC3-9CAE-B12A5B0697EC.jpeg

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