Gliders > Slope Soaring
West Wings Skylark build thread
angry_muppet:
English isn't my strong point... Bear in mind us Northerners speak a different lingo!
What I meant is that of the two supplied plywood control horns, one has gone missing. Thankfully I have additional plastic control horns I ordered with my other supplies. The issue will be affixing them; do I do it before or after covering the aileron? I think afterwards...
Happy Days:
Right!, now that we've established what you're saying maybe I, and others, will be able to help you.
Yes the control horns normally go on after covering. However.........
As you'll discover, little plastic horns don't normally come with fixing screws. Knowing that you're new to building I wonder if you have any appropriate size screws?
If you do have some screws;.........Warning! drill a hole through the control surface ( a little smaller than the dia of the screw) BEFORE :shock: :shock: you try to put the screw through the wooden frame of the control surface. If you don't you risk splitting the wood as the screw forces it's way through.
If you don't have any appropriate size screws you could probably get away with gluing the horn to the control surface as this build is only a light flyer.
If you do glue it ( thin CA glue is probably best as it will 'wicker' it's way into the wood,) then you'll have to cover the control surface after you've glued the horn in place.
Make sense? :wink:
Keith
angry_muppet:
Methinks I have made a mistake in my building... :!:
I've had a look and either one or both wings are out by 1mm at the third wing rib. :?:
Yet again, measure, check, measure, check and measure again before gluing! [-X
Now, my question is, how can I locate the necessary fine ply that is required to manufacture a longer 4.5° wing brace? Or do I have an alternative as I would consider keeping the wing as a single unit. Do feel free to advise whether this is foolish...
(And berate for making such a rookie mistake in building)
Finally, I do hope to fly (crash) the glider when the weather gets better... (in 2016)
Happy Days:
Not sure what you mean when you say the third rib is 1mm 'out.' Out of what?
I think the most interesting factor is the securing dowels......... They are bending upwards. I suspect the elastic bands are too strong and have snapped the wing joiner.
Can't really make out your second picture. What exactly does it show?
Can you explain exactly what has happened David.
angry_muppet:
Hi Keith,
What I mean is that it seems that when assembling the wings, the third wing rib is 1mm further towards the wingtip than it should be. Hence, as you can see from the second picture, the ply joiner doesn't make it to the rib. I know the picture is fairly poor, but I'll blame the camera... I'm perfect don't you know! :roll: That allows the wings to flex and therefore won't hold the dihedral that is required. Essentially, the wing joiner is about 170mm and the distance between ribs is 172mm... :!: I think that I can manufacture one from the leftovers from the ply that the wing ribs were cut from.
I'm not sure how I got the positioning of the ribs wrong as I'm convinced that I followed the plans and it'd be relatively difficult not to notice that the rib isn't in the correct place when it's overlaid on the plan during construction... :?
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