[quote="airnutz" The prop looks to rotate wrong..but again an old photo[/quote]
...Or maybe an old bonehead who didn't take the time to look thru some
Waco photos!!!

Work demands lessened and I got to spend some
time looking at the Kobernuss book. The prop was a standard form for the
day on the 9's and 10's. One of the photo captions labels it a Hartzell..but
I didn't get to dig and find more in the text for more other similar prop
suppliers. Edit... Fahlin was the other major supply..
As for the Hisso, I dunno...I've seen a few..very few of the Hisso photoed
Waco 10's and the cylinder head seems prominently taller than the OX or
OXX birds and may not fit within the same cowl-form...page 120 shows
a Hisso 10 which seems to verify this. Maybe the exhaust manifold thing,
that had me confused is on page 203 depicting a row of OX Waco 10 fuses.
They have what appears to be a stamped-steel and welded exhaust
manifold..which Don's Newark photo may be an example of with a down-tube fitted to it. The downtube looks to be too small in diameter..certainly
for the 180 horse bird and probably for the 150. I've probably gotten too
used to seeing the exhaust as in Roger Cain's red/black 10 example.
I did get one really neat internet-hit Friday night on a Hisso Waco 10 being
sold on Ebay..2 photos of the same bird..IIRC. It was a short-stack bird
in flight..very nice photos. The sale of the photos had ended April 9 but
they were still being displayed at Jay-Parrinos-The-Mint-LLC, ebay.
Saturday morn I tried to pull 'em up, but they had been removed form
display. And of course I didn't write down the NC# because I'd get all that
Sat-morn..sigh...
One interesting thing stood out about this bird was there was an attempt to
cowl the narrow/tall Hisso cam-covers..crudely... nowhere as neat as the
OX production or the smooth curves of the prototype breast-cowl. Definite
shadetree look..but great period phots nonetheless.
As for Don's photo..before I went on my last work blitz, I had been doing
some digging at the Galveston library microfilm of the local papers and
was reminded how informative the advertisements and business sections
can be. I think the Newark paper of the period is the Star-Ledger..any
Wixer's in Newark wanna unreel some microfilm from about 1929?