Whirlwind correspondence
I don't know any more than what Whirlwind has told me. Their web site is not very helpful. Apparently the 200RV and HRT series are now legacy. (Out of production, but still supported) This is what I received from the company.
Added edit: As the #5 post below in this thread from Frogman states, the 300 series is 3 blade, and I'm looking for a 2 blade.
The 330-2B/72H-72 propeller is the same blade style and performance as the 2blade HRT, but the hub has been redesigned and it is a direct bolt-on replacement with a standard Van’s cowling.
The 330 series propeller platform is built to withstand more aggressive engines with high compression ratios. This 72” diameter, 2-bladed propeller weighs 40 lb (including spinner and hardware) and is suited for 180 to 220 horsepower engines.
This propeller features a “scimitar” style swept tip, Carbon Fiber composite blades, electro-formed nickel leading edge shields, and an aluminum hub. Each propeller comes with a composite spinner that is ready to fly, easy to install, and finished with a white primer ready for paint.
The 330 Series is available in a standard or counterweighted configurations. Counterweighted configurations are for inverted flight (0 G or negative G aerobatics).
This propeller uses engine oil and a governor to hydraulically control pitch. Standard configurations are compatible with a standard “pressure to increase pitch” governor with a max relief pressure of 330 psi (we sell the Jihostroj P-920 for $1,450) while counter-weighted configurations are compatible with “pressure to decrease pitch” governor with a max relief pressure of 330 psi (we sell the Jihostroj P-940 for $1,450).
Propeller-330-2B/72H-72
Example Aircraft RV-4, -6, -7, -8, -9, -14
Engine [Max Compression]
Lycoming (I)O-320 [10:1]
Lycoming (I)O-340 [9.6:1]
Lycoming (I)O-360 Parallel Valve [9.6:1]
Lycoming (I)O-360 Angle Valve with CW Crank [9.6:1]
Lycoming (I)O-370/375 Counter Weighted Crank [9.6:1]
Lycoming (I)O-390 [9.6:1]
HP 180-220
Blades 2
Diameter 72”
Weight (with spinner) 40 lb
Price (with spinner) $12,400
For counter-weighted propellers, add 2.2 lb per blade and add $300 per blade.
Hunter Hollingshead
Whirl Wind Propellers Corp.
Structural Composite Engineer
1800 Joe Crosson Dr, El Cajon, CA 92020
https://whirlwindpropellers.com/
email:
[email protected]
Telephone: (619) 562 – 3725