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Old 06-06-2018, 05:16 AM   #2
pmdec
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Join Date: Nov 2006
Location: France
Posts: 528
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Hi,

All SPAD XIII were LH props because the engine was a geared one!

There was at least 8 "kinds" of approved props for this plane. From the shape of the prop on your picture, it can't be a De La Granville (but it may be a De La Granville made), nor an Éclair nor a Chauvière. It could be a Ratmanoff serial HS, perhaps a Régy serial 361. Both were 2.50 meters long, with quite the same pitch (2.30 vs 2.55 meters) and blade width (200 vs 210 mm).
Some Ratmanoff HS were made from thin laminations by De La Granville, but they were covered with non see through brown-red varnish, so this was not visible.

The picture you show is perhaps one of a SPAD canon. Same props were used on it.

I join pics of a Ratmanoff HS made by Ratmanoff (sorry, no larger pic of this one) and one of a De La Granville made using thin laminations.
I have not and have never seen a pic of a Régy 361.

Regards,
PM
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