PIREP on Whirlwind "new" 330 series C/S propeller series

[David Z]

Originally Posted by Whirl Wind Propellers

330-2B 72H-72" weighs 40 lb standard ($12,400) and 44 lb counterweighted ($13,000)
330-3B 72H-73" weighs 53 lb standard ($14,355) and 60 lb counterweighted ($15,255)

website updates in progress. Prices subject to change.

I understand "counterweighted" in this post to mean counterweighted prop blades for aerobatic operation.

Counterweighted (or dampened) crankshafts are a different thing altogether, yet also very important to propellors.

If I'm wrong, please let me know

[smithflys23]

Originally Posted by Whirl Wind Propellers

No, sorry, the photos attached were from the old style spinners. The new spinners come in a 13" or 14" diameter. Both sizes will completely enclose the ferrule of the 330-2B.
The 330-3B will slightly show the ferrules with a 13" spinner, but the 14" will enclose the ferrules for the 3-blade.

edit: replaced the picture in the other post and added spinner pic here

Now I’m confused. How can I tell which hub I have? It’s not listed on my invoice.
Also, do I have the “old style” spinner? Will one of the pointier new style spinners work with my hub?

[Whirl Wind Propellers]

Originally Posted by David Z

I understand "counterweighted" in this post to mean counterweighted prop blades for aerobatic operation.

Counterweighted (or dampened) crankshafts are a different thing altogether, yet also very important to propellors.

If I'm wrong, please let me know

Yes, it can be confusing: a counterweighted propeller has centrifugal weights to prevent overspeed during inverted aerobatics (lapse in oil pressure)

A counterweighted crankshaft reduces torque loads on the engine crankshaft at each cylinder's ignition stroke.

[Whirl Wind Propellers]

Originally Posted by smithflys23

Now I’m confused. How can I tell which hub I have? It’s not listed on my invoice.
Also, do I have the “old style” spinner? Will one of the pointier new style spinners work with my hub?

Feel free to call in or email us pictures to get some clarification on what you currently have. The new spinners are only for the new 330 hub. If you placed your order after Jan 1, 2021 you probably have a 330 hub.

[Lucio I-NLCM]

Originally Posted by Whirl Wind Propellers

330-2B 72H-72" weighs 40 lb standard ($12,400) and 44 lb counterweighted ($13,000)
330-3B 72H-73" weighs 53 lb standard ($14,355) and 60 lb counterweighted ($15,255)

website updates in progress. Prices subject to change.

Hi
could you tell us the 330-3B the tear dow inspection time/years?