Monday, September 29, 2014
de-rusting a propeller hub and then discovering it was a metric hub. I've just learned that this hub fits an engine from earlier in the First World War. It's for an 80 HP Le Rhone rotary motor. It does not fit the larger motors like the 110 HP version. It may fit the 60 HP version but I have not found data for the hub on it and they only made a few hundred of them.
A - Hub Shaft O.D. 60 mm (2.362")
C - Prop. Bolt Centerline Diameter 120 mm (4.724")
D - Hub Flange O.D. 150 mm (5.905")
E - Number of Bolts - 8
F - Dia. of Bolts - 10 mm (0.394")
The shaft is 42 mm O.D. at the nut end of the shaft.
The taper increases the diameter as a 10% cone.
The threaded end of the shaft (where the retaining nut screws on)
is threaded for 18 mm.
The thread has on O.D. of 40 mm and a pitch of 1.50 mm.
All of which says this hub works on an 80 HP Le Rhone. With magnetic inspection for cracks and fresh nickle plating it would be ready for use.
Some of the planes which used the 80 HP Le Rhone either as the primary or alternate motor were:
1913 - Morane-Saulier L
1913 - Morane-Saulier N
1914 - Nieuport 10
1915 - Nieuport 11 (Bebe)
1916 - Nieuport 21 (as trainers)
1914 - Bristol Scout C
1915 - Bristol Scout D
1915 - SPAD A-2
1916 - Sopwith Pup
1916 - Vickers F.B.12
1917 - Thomas-Morse S4c