Hartzell Propeller approval summary
 

I'm sorry folks, this list started as an easy-to-read MS Word table but it would not cut-n-paste into this message and I cannot attach a document, so I had to resort to a simple, sequential list. Hopefully this will provide some useful info? If any of you find mistakes, I reserve the right to make corrections... I will add applicable info or additional approvals when available.

Respectfully,

Les Doud
Hartzell Propeller Inc.
ldoud@hartzellprop.com
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Blades: 7666A-2, -4
Engine: Lyc O-360-A1A
Crank: 180 Hp w/o dampers
Compression Ratio: 8.5:1
Ignition: Std. Mags.
Placards: Avoid continuous ops 2000-2250 RPM
Diameter: 74-72?

Blades: 7666A-2, ?4
Engine: Lyc O-360-A1A
Crank: 180 Hp w/o dampers
Compression Ratio: 8.5:1
Ignition: One Lightspeed, one mag
Placards: - Avoid continuous ops 2000-2250 RPM
- Ops above 2600 RPM limited to takeoff only
- Propeller blades are life-limited to 8700 hrs.
Diameter: 74-72?

Blades: 7666A-2, -4
Engine: Superior O/IO-360-B1A2
Crank: 180 Hp w/o dampers
Compression Ratio: 8.5:1
Ignition: Std. Mags
Placards: - Continuous ops prohibited above 20? MP between 1950-2300 RPM
- Ops above 2600 RPM limited to takeoff only
Diameter: 74-72?

Blades: ?BA? 7496, -2
Engine: Superior O/IO-360-B1A2
Crank: 180 Hp w/o dampers
Compression Ratio: 8.5:1
Ignition: Std. Mags
Placards: Continuous ops prohibited above 22? MP between 2050-2200 RPM
Diameter: 74-71?

Blades: ?BA? 7496, -2
Engine: Lyc O-360-A1A
Crank: 180 Hp w/o dampers
Compression Ratio: 8.5:1
Ignition: Std. Mags and/or Lightspeed or Unison LASAR
Placards: - Do not operate above 22? MP below 2350 RPM
- Ops above 2600 RPM limited to takeoff only
Diameter: 74-72?

Blades: ?BA? 7496, ?2
Engine: Lyc IOF-360-A1A
Crank: 180 Hp w/o dampers
Compression Ratio: 8.5:1
Ignition: Aerosance FADEC
Placards: - Do not operate above 22? MP below 2350 RPM
- Maximum (red line) RPM limited to 2650 RPM
Diameter: 74-72?

Blades: ?BA? 7497, -2
Engine: Lyc IO-360-A1A
Crank: 200 Hp w/o dampers
Compression Ratio: 8.7:1
Ignition: Std. Mags
Placards: Continuous ops prohibited above 24? MP between 2350-2550 RPM.
Diameter: 74-72?

Blades: ?BA? 7497, -2
Engine: Lyc IO-360-A1B6
Crank: 200 Hp w/ dampers
Compression Ratio: 8.7:1
Ignition: Std. Mags
Placards: None
Diameter: 74-72?

Blades: ?BA? 7497, -2
Engine: Lyc IO-390-X
Crank: 200 Hp w/ dampers
Compression Ratio: 8.7:1
Ignition: Std. Mags
Placards: None
Diameter: 74-72?

Van?s only endorses the 74? propeller for RV-4s with long gear legs and the RV-6/6A, 7/7A and 8/8A.

NOTE: Propeller vibration characteristics and stress amplitudes on a reciprocating engine installation are primarily mechanically generated by the engine. Any modification to the standard engine configuration to include high-compression pistons, electronic ignition, FADEC, tuned induction and exhaust, and turbo-charging or turbo-normalizing have the potential to adversely affect the propeller vibration characteristics and stress amplitudes. Hartzell Propeller therefore does not endorse any such engine modification unless the specific engine and propeller configurations have been tested and found to be vibrationally acceptable according to 14 CFR 23.907.

Les,

First of all thanks for posting this. Got a question...on TCDS P-920 I see many other combinations listed that are "approved vibrationwise." My engine is an IO-360-A1B6 (200hp w/dampers). Here's the one you listed for that engine:

On P-920 I also see that the F7666 blades with the HC-C2YK or HC-C2YR hub combo is approved for use on the IO-360-A1B6, 74-72", with no placards. That's the 2nd item on page 9. Is that info correct?

Just want to understand whether the list you posted is "be all end all" or whether there are more combos, i.e. what's on the TCDS, that are approved.

Thanks!

TCDS P-920
 

Yes Dan, TCDS P-920 is what everyone should follow if the combination is not in the list I posted. The TCDS is correct. My list includes what we've either tested recently and is not yet in P-920, or non-certified engine configurations we've tested in our effort to support the experimental market.

By the way, AvWeb has a good article by Marc Cook that documents the testing that approved the 7497 on the IO-390-X http://www.avweb.com/news/columns/193075-1.html .

Les