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Discussion Starter #1
Can anyone get me some good info,pictures etc.. about this engine.It will be greatly apperciated
 

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Planning on building a big RC plane?
 

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NR731: 38 bhp from 10 kg (23 lb) constant speed engine. Low Specific fuel
consumption: 0.52 lb/bhp per hour at cruise. Air cooled. In
production, 1989. Formerly P73. Was fitted into Banshee 300 RPV military
target drone.

Norton P73 Rotary drone engines which are super light,
super powerful and very compact. They weigh only 21.7 pounds and produce a
staggering 32.8 bhp @ 7500 rpm. They measure in depth from the front of
the propeller flange to the rear of the mounting plate 190 mm. The oil
pump projects 32 mm beyond this. The width of the P73 across the widest
part is 237 mm and it measures in height 262 mm. This is a very compact
engine which will fit into a radial cowl perfectly. The engine operates
with far less vibration than either a two or four stroke power plant. The
engine was tested to full JAR regulations, 50 hours of testing with no
appreciable wear. This regulation allows this engine to be used in
powered sailplanes or motor gliders. The 50 hour test was conducted
swinging a 26 inch by 20inch pitch propeller. The engine can be run as
high as 10,000 for brief periods.
 

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Discussion Starter #4
Anyone else have any more info on this engine for me like diagrams of it to tear it down,any more info on it?? Let me know if you guys got more info
 
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