On Mar 21, 8:34*am, Andy wrote:
On Mar 19, 8:06*pm, Mike Williams wrote:

I'm trying to find out what LS8a will take the 18m wing extensions.
From what I've read, the "Pre DG" Ls8a will and the "Post DG" will
not.

Anyone know what serial number range or year manufactured that might
be?

MW

I know someone that bought a new LS-8 and paid for 18m provisions
intending the buy the 18m tips later. *When he followed up later he
was told he could not buy and fit the 18m tips even thought he had
paid for the provisions. *I think he was told they had to be fitted at
the factory or not at all.

I assume that the tips are not interchangeable between gliders but I
don't own one and can't be sure that is true.

Andy (GY)

Not sure if this answers the question, but...

When I bought my LS8-18 new back in 1999, I was told something
similar; ie. if you plan to use the 18M tips then you need to have
them "fitted". Since I was planning to get them regardless, it
didn't really matter to me too much. Now, unfortunately, I don't
recall whether there was a stipulation that the fitting be done at the
factory.

I can see how it might require some fiddling at the root rib of the
extension. There are a bunch of pins that all have to align (aileron
drives, fore and aft pins, pin on the spar extension, and threaded
locking collar), and the tolerances are fairly tight.

If I happen to run across another LS8 with 18M tips, I'll try to swap
and report back.

Erik Mann
LS8-18 (P3)