Bill,
The fairing extensions were added after Lancair went to one piece main gear doors. The fairing only needs to stick out from the side of the fuselage enough to allow the gear hole to stay on the bottom of the plane. If you have not already built you main gear doors you need to get them to the point to where you can determine how much of the fairing you will need to add to the door to make it large enough for the tire. This dictates where the fairing need to be positioned. The main gear door should e as flat as possible.  

Don't forget to make sure the tire is full of air.

Regards,

Brad Simmons
Airframes Inc.
Milan, TN

-----Original Message-----
>From: Bill Wade <super_chipmunk@roadrunner.com>
>Sent: Apr 23, 2010 10:42 AM
>To: lml@lancaironline.net
>Subject: [LML] IV wing fairing extensions
>
>  I'm fitting the fairing extensions and it looks to me as if they hang out
>into the slipstream. The picture is taken along the wing root, and not only
>do the extensions stick out, they angle upward as well. I'm thinking that
>they add weight and might increase drag, so unless there's a good reason to
>add them I might leave them off.
>
> According to the manual it appears that in 1996 the wing root fairings
>ended close to the wing TE. The instructions for the the extensions are
>dated from 1998, so I'm guessing they were added at the time.
>
>  Can anyone with a long memory tell me why the extensions were added? Are
>they for looks or do they have a real function? Thanks-  Bill Wade