Aymar-DeMuth Prop

[mg@nd]

I'm awaiting log books on an 18 yr old RV for sale (located in the coastal NE) and it has the A-D Prop matched to an O-360 but no log book on the prop.

Understand the company is long out of business. TTAF and Engine are only about 200 hrs. Can an RV-smart A&P @ the pre-buy tell me if the prop is serviceable and safe OR do I need a prop expert?

Have read generally good reports (although they're dated) on the forum on the A-D but have never flown behind a wood propeller. Appreciate your thoughts!

 

[Kyle Boatright]

Aymar Demuth made good props, but a visual inspection is always a good idea.

Look for cracks and/or failed glue joints. Also check the condition of the finish-if it is poor, you can refinish it yourself or have one of the current wood prop manufacturers refinish it for you.

 

[riobison]

I had in one in my 180 HP RV4. Zero regrets. 206+ mph at 9000+ ft, 1700 fpm roc out of 1500 DA and at 10,000 it was still going up 1000 fpm. Easy to maintain. Throttle back in the rain.

Tim

 

[mg@nd]

Thanks Kyle and Tim. That's good to know.

 

[Taltruda]

Amar Demuth props are awesome! Retorque it after 5 hours, then 25 hours, then again every 6 months, or whenever the humidity (seasons) change.

 

[IO390]

I have an AD prop on my O320 RV6. Flat out I get good speeds, with just me on board and a colder day (isa+0) I get about 167kt ias, sometimes around 170 at low level, full throttle. Rate of climb with just me is around 1500fpm with full tanks, or 1700fpm initially with half tanks. A few days ago I was climbing 130kt at 1000fpm. I will change for a CS prop but not for another wood prop.

 

[riobison]

I will 2nd this as well as my cruise climb at 140 mph was 1000 fpm. This is better than the top speed of a lot of certified aircraft.

Tim