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Old 07-18-2010, 05:56 AM
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Sukhoi_Madness
 
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Default RE: Sig Mid Star 40 Build Thread

Some more progress –

I’m going to use the 5th wing bay from the centre for the aileron servos. I’m going to add a doubler to the wing rib either side of the servo bay – the last airframe I built with dual aileron servos was a 4 star 60 and I can’t remember what the structure looked like, but I feel with the rear spar being balsa I could do with a little extra strength in that area. Plus it’ll get me thinking about how this airplane may be built into a twin at some point.

The doublers (pictured) have been made form one of the scrap pieces of light ply from the punch outs in the fuse sides.

I realise these where removed in the first place to lighten the airplane – but I’m sure with the size of this wing and a .45 up front a few extra ounces across the whole dual aileron modification is going to make little difference to how it flys.

I’ve also started installing the shear webs.

(NB: I’m hoping around the build steps a little to be able to continue building while I wait for parts to dry – this is a bad practice if you’re contemplating your first build)
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