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Scratch built Slingsby King Kite 1/4

Let us all watch your new project progress.
Mike F
Posts: 66
Joined: 18 Mar 2015, 14:08
Location: Gloucestershire

Re: Scratch built Slingsby King Kite 1/4

Post by Mike F »

Hi Vincent

Thank you for your highly detailed build log with great photos and explanations of your building techniques.

Much appreciated!

Mike F

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Bovin
Posts: 100
Joined: 30 Sep 2017, 12:43
Location: Hillegom

Re: Scratch built Slingsby King Kite 1/4

Post by Bovin »

Thanks Peter and Mike for your kind words!
I also learned a lot from all the info on this and related sites or fora, for example the PVA with a foil iron technique, so I am glad to do something in return. (my parents used to be teachers ...)

Vincent

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Bovin
Posts: 100
Joined: 30 Sep 2017, 12:43
Location: Hillegom

Re: Scratch built Slingsby King Kite 1/4

Post by Bovin »

The wings are completely sheeted. Again a lot of panels, glued with the same technique, dried PVA and fixed with a foil iron.
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I have some doubts how that sticks to the balsa ribs, I think I should apply 2X PVA on them, now that the wing is still “open ”, I can apply some extra glue, but when the top goes on, that will no longer be possible. As I got closer to the wingtip, I found that an extra pivot point for the aileron was needed. First drilled an oversized hole and then glued an epoxy bearing plate to the rib.
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IMG_2739.JPG (16.59 KiB) Viewed 987 times
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With a long batten with sanding paper I sanded the edge of the sheeting straight .
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The sheeted wings look very strong!

Vincent

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Bovin
Posts: 100
Joined: 30 Sep 2017, 12:43
Location: Hillegom

Re: Scratch built Slingsby King Kite 1/4

Post by Bovin »

I now sheeted the topside of the wing, pre-priming the balsa ribs with PVA, that seems to work better.
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Next I had to trim the back of the sheeting for the ailerons and flaps. By the way, I had already done that with the bottom sheeting before applying the top sheeting. I did this by drilling a few 1mm pilot holes with the hinge pins as guidance and cutting the plywood along these holes. Of course there was still a lot of sanding. When the top of the wings were sheeted, I just repeated the process.
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The ailerons and flaps remain demountable, just like that of the horizontal stabilizer
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I plugged in the leads and to my relief it all worked.
The wings are now roughly finished weigh 936 and 942 grams.
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Vincent

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SedB
Posts: 90
Joined: 14 Nov 2019, 09:17
Location: Netherlands

Re: Scratch built Slingsby King Kite 1/4

Post by SedB »

A very nice build so far, I enjoy to see is all come together!
The wings look great, I wonder how you achieved so little difference in weight between the two? Did you weight them in between, or is this the result of working precise?

Daniel

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Bovin
Posts: 100
Joined: 30 Sep 2017, 12:43
Location: Hillegom

Re: Scratch built Slingsby King Kite 1/4

Post by Bovin »

Thank you for your nice comments and yes I am also looking forward to see it as a whole (I had a small preview :) ).
The weight of the wings is purely a coincidence, what helped that not much balsa is used, ply for sheeting, spruce for spars? only the ribs are from balsa, but it was selected balsa, all medium.
I found it difficult working with balsa ribs and the spruce, sanding is very tricky, but I am very pleased that the wings didn't turn out heavy.

Vincent

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