Andre wrote:

: You know, I had wondered for several years if there was an STC to put
: the Cherokee 235 tip tanks on an early Arrow. They shared the same
: basic wing and it seems that all that would needed is to bolt them on
: and plumb the system with the 235 stuff; pretty much using all OEM
: hardware. I can't recall anymore but I think the 235 tip-tanks held
: about 16 gal. useable, + or - . That would sure give a miserly Arrow
: a nice range/endurance envelope to play with. I even suspect that it
: would, with the added fuel weight in the wings, a slight gross weight
: increase could argued for. Anybody heard of anyone putting the 235
: tips on some other hershey-bared wing model?

Andre, I looked at this for my PA-28-180. The 235 wings are a lot different
from the PA-28-180 wings: the skins are thicker gauge, and the spar is
different. I can't find references to the PA-28R-180, other than to show that
it's different from the 235 and from the 140/150/160/180 airplanes.

PS, I have searched for additional tankage and have not found anything
available. If you do find something, please report!
--
Aaron Coolidge (N9376J)