Kirk has properly pointed up the issue in trying to align 2 pin wings.
I cannot tell you how many even experienced owners still try to install
the pin nearest the helper first. Based on the geometry of the design,
the helper has very little ability to control the alignment on that pin
but can immediately effect change on the opposite one. Once the
opposite pin is installed then any vertical movement by the helper will
translate to the nearer pin receptacles.



Larry

"01" USA

LS-3a


" wrote in message
ups.com:

Re two pin assembly vs one pin assembly; two main pins are really easy
if you know the trick to it. The big difference is that with a two pin
setup (LSs for examble), the wings go into the fuselage relatively
"loose", while single pin (Ventus, etc) wings have to fit into a
"tight" fuselage. This can cause some problems with newer single pin
gliders, until the exact right angle is found.

With a two pin, my technique is to put in the fork spar first, then the
tongue spar. Now, with the helper on the tip of the tongue spar wing,
have him lift the tip until the spar main pin holes on the side AWAY
from him (in the fuselage) line up, then insert that pin. This will
usually take a surprising amount of lift in an LS, by the way! Then
have him lower the tip until the pin holes closest to him are lined up,
and that pil will slide in easily.

What makes this easy in an LS is that until the first pin is in, the
wings are fairly loose in the fuselage and are easy to position.

This also works with ASW-20s, 19s, etc..

Works for me.

Kirk
LS6b 66