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Cliff Charlesworth Ka3 from LCS

Let us all watch your new project progress.
TonyL
Posts: 104
Joined: 18 May 2021, 18:36
Location: Lyon France

Cliff Charlesworth Ka3 from LCS

Post by TonyL »

Hello everybody, this is my first build thread, but not my first build.
I took some pictures and will post them here, together with my remarks.
Cliff C's plan is very clear, but I might have misread some parts, and some
details like the CoG are missing, so I hope I can get some input from you.
The short kit is very well cut from top notch balsa and ply, but I had to recut
some parts (several times as I made plenty mistakes)

If I would build the wing a second time I would have built the spar classically.

Cliff Evans cut the jig and added it, and I donot think one can build the fuzz without the jig!

Some dimensions of the wood (balsa and spruce) were modified as these sizes
were not available in France

Instead of 4.5 mm square hard balsa sticks I used 4 mm Samba (Obeche) and the
6x4.5 mm spruce keel was made from two 5x3 mm spruce sticks glued together

TonyL
Posts: 104
Joined: 18 May 2021, 18:36
Location: Lyon France

Re: Cliff Charlesworth Ka3 from LCS

Post by TonyL »

The jig supplied by Cliff Evans, I had to modify some parts to
account for the skid, which explains the "amateur" Iook, and
added the tail post as it helps positioning the keel, I downsized
the pictures 4 times to keep the file-size down,

please let me know if you prefer larger pictures
Attachments
f1s.jpg

TonyL
Posts: 104
Joined: 18 May 2021, 18:36
Location: Lyon France

Re: Cliff Charlesworth Ka3 from LCS

Post by TonyL »

the four main stringers (4 mm obeche) steamed (roughly) to shape
Attachments
f2s.jpg

TonyL
Posts: 104
Joined: 18 May 2021, 18:36
Location: Lyon France

Re: Cliff Charlesworth Ka3 from LCS

Post by TonyL »

Formers 1-7 on the jig and the main stringers glued in place
Attachments
fb3s.jpg

TonyL
Posts: 104
Joined: 18 May 2021, 18:36
Location: Lyon France

Re: Cliff Charlesworth Ka3 from LCS

Post by TonyL »

wing saddle built (not 100% sure it is as CC planned)
Attachments
fb4s.jpg

TonyL
Posts: 104
Joined: 18 May 2021, 18:36
Location: Lyon France

Re: Cliff Charlesworth Ka3 from LCS

Post by TonyL »

built the top of the rear fuzz flat on the plan and positioned it in 3d using the jig
then added the braces (all 4 mm obeche)
Attachments
fb5s.jpg

TonyL
Posts: 104
Joined: 18 May 2021, 18:36
Location: Lyon France

Re: Cliff Charlesworth Ka3 from LCS

Post by TonyL »

rear fuzz and formers 6 & 7
Attachments
fb6s.jpg

User avatar
Cliff Evans
Posts: 662
Joined: 29 Dec 2019, 15:13
Location: Bristol
Contact:

Re: Cliff Charlesworth Ka3 from LCS

Post by Cliff Evans »

Hi Ton. CG is as in the picture.
CG.jpg
https://lasercutsailplanes.co.uk
https://patteaklegliders.co.uk

TonyL
Posts: 104
Joined: 18 May 2021, 18:36
Location: Lyon France

Re: Cliff Charlesworth Ka3 from LCS

Post by TonyL »

Hi Cliff,

thanks very much for the CoG location, I made some more progress

TonyL
Posts: 104
Joined: 18 May 2021, 18:36
Location: Lyon France

Re: Cliff Charlesworth Ka3 from LCS

Post by TonyL »

cockpit floor below seat, 4 mm obeche
Attachments
fb7s.jpg

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