Re: REFLECTOR: Attaching Winglets.

[Carl Hoffman <hoffman3@erols.com>]

DAlexan424@aol.com wrote:
> 
> In a message dated 9/26/98 8:21:00 PM Pacific Daylight Time, lgarnerx@juno.com
> writes:
> 
> > Since the chord line of an airfoil is the basic reference for all
> >  calculations, and the tip IS an airfoil, then doesn't it follow that you
> >  measure from the TE and from the center of the LE of the airfoil at the
> >  intersection of the wing chord plane with the tip chord plane?
> >  At least, that's the way I did it.
> >
> 
> That's the way I did it as well.
> 
> Dale Alexander
> 173 RGE

I built the standard wings. I remember there was a paper pattern used in
the process to make the wing cutouts. The book used measurements that
went from the wing bolts to the leading and trailing edge of the
winglet.

The measurements are: X = 107" to 108", 27" reference adjusted 10" to
10-1/4" greater than the leading edge measurememt. My wings ended up
being: 108-7/16", 10-1/4", 118-11/16", and 27-1/4". The wing spar length
was 7/16" to much. The 27" reference was the hardest to measure.

But, there were black core alignment lines on the inboard and outboard
wing cores. They were used to align the cores to the spar. In neither
case did they coinside with the wing leading or trailing edge. The point
where they meet the edge of the core was used to draw level lines on the
surface of the wing to level and check wing alignment thru out wing
construction. Wing construction took me 6 weeks and 200 hours to a point
of lower winglet reattachment and aileron cutouts.

Carl Hoffman, Classic wings and winglets.