Aileron inboard edge sealing

Interesting to note, the JS-1 and Ventus 2 both have fences on inboard flap, fuselage fairing.

While I agree Fences dont add much and can be a pain practicaly, there is benefit in closing up the gaps between the edges of the ailerons and the wing. Some birds have pretty big gaps on the sides of the ailerons which make for drag. On my 1-26, i closed these side gaps thus making the wing trailing edge entirely uniform. While theres not much one can do to increase the performance of the 1-26 wing (non laminar airfoil) I experienced a wonderfull gain in aileron effectiveness. I performed the same procedure on my pilatus B4 years ago. On that bird I did get a noticable gain in performance.
Dan

On Thursday, March 10, 2016 at 11:49:28 AM UTC-5, wrote:
While I agree Fences dont add much and can be a pain practicaly, there is benefit in closing up the gaps between the edges of the ailerons and the wing. Some birds have pretty big gaps on the sides of the ailerons which make for drag. On my 1-26, i closed these side gaps thus making the wing trailing edge entirely uniform. While theres not much one can do to increase the performance of the 1-26 wing (non laminar airfoil) I experienced a wonderfull gain in aileron effectiveness. I performed the same procedure on my pilatus B4 years ago. On that bird I did get a noticable gain in performance.
Dan

Manuals for many glass ships have a specified minimum gap, commonly 1.5mm, between the ends of control surfaces and adjoining parts. Care should be taken to comply with original intent.
FWIW
UH

On Thursday, March 10, 2016 at 3:24:01 PM UTC, Jonathan St. Cloud wrote:
Interesting to note, the JS-1 and Ventus 2 both have fences on inboard flap, fuselage fairing.

JS1s aren't fitted with flaperon fences. There is reference to them on the website but they don't fit them to production aircraft as standard - and weren't offered to me as an option.

My end sileron gap seals are made of closed cell foam. They clise the gap virtualy completely and due to being soft foam, has no potential to jam whatsoever, if for some reason they swelled, a single flick of the ailerons would mash them off, its a no brainer.