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Cliff Charlesworth Ka3 from LCS

Let us all watch your new project progress.
TonyL
Posts: 51
Joined: 18 May 2021, 18:36
Location: Lyon France

Re: Cliff Charlesworth Ka3 from LCS

Post by TonyL »

cockpit floor below feet
Attachments
fb8s.jpg

TonyL
Posts: 51
Joined: 18 May 2021, 18:36
Location: Lyon France

Re: Cliff Charlesworth Ka3 from LCS

Post by TonyL »

some more progress on the tail
Attachments
fb9s.jpg

TonyL
Posts: 51
Joined: 18 May 2021, 18:36
Location: Lyon France

Re: Cliff Charlesworth Ka3 from LCS

Post by TonyL »

view of rear lifting eye
Attachments
fb10s.jpg

TonyL
Posts: 51
Joined: 18 May 2021, 18:36
Location: Lyon France

Re: Cliff Charlesworth Ka3 from LCS

Post by TonyL »

fittings were hand "crafted" using 1.5 and 1 mm dural, will try to see if
I can replace them with a set of higher precision!

former 4 with 1.5 mm dural fittings,
former thickened with 1mm ply front and aft for top fitting
thickened with 1 mm ply front for bottom fitting,
top: space between fittings is now 5 mm (1+3+1) and the wing-spar-fitting fits inside
bottom: space is 4 mm for the copper fitting on strut (see later)
Attachments
fb11s.jpg

TonyL
Posts: 51
Joined: 18 May 2021, 18:36
Location: Lyon France

Re: Cliff Charlesworth Ka3 from LCS

Post by TonyL »

former 6 with 1mm dural fitting for v-tail
Attachments
fb12s.jpg

TonyL
Posts: 51
Joined: 18 May 2021, 18:36
Location: Lyon France

Re: Cliff Charlesworth Ka3 from LCS

Post by TonyL »

putting the fuzz aside and starting on the wings, as I stated before, if I'd build them again
I would go the classical way: notch the ribs, insert the spruce spars, add balsa shear webbing
(reinforced with ply where the fittings are located) I had serious problems aligning the
trailing edges as the ply part of the main spar has mainy holes.

Anyway, gluiing the 3x5 mm spruce sticks to the ply part using white wood glue
Attachments
w1s.jpg

TonyL
Posts: 51
Joined: 18 May 2021, 18:36
Location: Lyon France

Re: Cliff Charlesworth Ka3 from LCS

Post by TonyL »

second stick glued to spar (this way the spars are straight though!)
Attachments
w2s.jpg

TonyL
Posts: 51
Joined: 18 May 2021, 18:36
Location: Lyon France

Re: Cliff Charlesworth Ka3 from LCS

Post by TonyL »

Strut fitting front and rear of spa, used 3 mm ply as filler, the fittings are 4.5 mm apart
Attachments
w3s.jpg

TonyL
Posts: 51
Joined: 18 May 2021, 18:36
Location: Lyon France

Re: Cliff Charlesworth Ka3 from LCS

Post by TonyL »

Fuzz fittings directly onto the 1.5 mm ply, no reinforcements necessary as
the struts take up much of the load. the outside of the fittings is 4.5 mm apart
therefor the fittings on former 4 had 1 mm ply backings front and aft
(3 mm ply + 1+1 mm =5mm)
Attachments
w4s.jpg

TonyL
Posts: 51
Joined: 18 May 2021, 18:36
Location: Lyon France

Re: Cliff Charlesworth Ka3 from LCS

Post by TonyL »

a very simple rig for cutting the ribs, as most are the same
Attachments
w5s.jpg

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