Boris,

Obviously there are several reasons for a heavy wing and several solutions. One, as Gerard notes, is flap position, that is the flaps are differently deployed.

 

The fuselage flap fairing positions before “adjustment” are a bit rough on the 300 series but can be "tuned". By that I mean the fairings are not at an equal level condition (WL) with respect to each other from the factory … at least mine weren’t. You must make them equal in waterline position by “adjusting” the fairings during construction (heatgun and urging). Otherwise, one WILL be at a higher (or lower) WL than the other.

So we’ll either suffer the indignity of having flaps that do not match with the fairings, your reflex will not be perfect, you’ll fly with offset (un-faired) aileron to fly with out roll, or you’ll split the flaps and your ailerons will look funny when faired with the tips. Or a combination of some of these.

Bottom line, if your flaps are not at the same WL at the fuselage fairing nor faired at the level position of the ailerons --- all at the same time (assuming no twist in the wing), one wing will be heavy. Splitting the flaps (one slightly up, the other slightly down) is one way to solve this. There are others as above.

Jim

 

 

-----Original Message-----
From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of gerardoconnell@optusnet.com.au
Sent: Monday, September 22, 2008 3:11 PM
To: lml@lancaironline.net
Subject: [LML] heavy wing

 

Boris, for fixing the wing down problem I would also check your flap alignment-if both flaps are not retracting equally it will fly one wing down. This also makes for interesting take offs with 10deg flap set especially with a X wind

 

Regards

 

Gerard

 

 

 

 

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