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Thread: NEW! Ground Adjustable Composite Prop for Experimental Carbon Cub

  1. #1
    KatieB
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    Default NEW! Ground Adjustable Composite Prop for Experimental Carbon Cub

    Good Afternoon, Carbon Cub owners! I'm pleased to announce that the new Whirl Wind GA340 ground adjustable composite propeller is now available for Experimental Amateur-Built and E-LSA Carbon Cubs. This prop is slightly heavier than the standard Catto (approximately 4 lbs), but offers significantly marginally faster cruise speed and a durable electroformed nickel leading edge. Of course the big benefit is the ability to get the pitch adjusted perfectly to your aicraft configuration and flying environment.



    • Configuration: 2-blade
    • Blades: Thermoset epoxy/graphite composite.
    • Hub: Machined aluminum
    • Diameter: 78"
    • Pitch: ground adjustable, infinitely variable
    • Color: Satin Black with white tips. Other colors are available at extra cost.



    The full Whirl Wind spec sheet and photos will be posted on our website within the next week or two. Retail price is $2,950. A Carbon Cub spinner kit pre-cut to match the prop hub is available for $356. ($3,290 total) To order, please call 1-877-484-7865. Please specify diameter of your hub bolts when ordering.

    We have one new prop with 3/8" hub bolts in stock right now. Typical lead time for new orders will be 2-3 weeks.


    NOTE: This propeller is approved for use on ELSA or E-AB aircraft with CC340 or Lycoming O-320/O-360 derivative engines only. Proper pitch setup does take time and a reasonable amount of flight testing; it is not an "instant" pitch adjustment.
    Last edited by KatieB; 03-23-2012 at 09:41 AM.

  2. #2
    Member armaurer's Avatar
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    Default Re: NEW! Ground Adjustable Composite Prop for Experimental Carbon Cub

    Quote Originally Posted by KatieB View Post
    Good Afternoon, Carbon Cub owners!I'm pleased to announce that the new Whirl Wind GA340 ground adjustable composite propeller is now available for Experimental Amateur-Built and E-LSA Carbon Cubs. This prop is slightly heavier than the standard Catto, but offers significantly faster cruise speed and a durable electroformed nickel leading edge.Configuration: 2-bladeBlades: Thermoset epoxy/graphite compositeHub: Machined aluminum Diameter: 78" Pitch: Ground adjustableColor: Satin Black with white tips. Other colors are available at extra cost. The full Whirl Wind spec sheet and photos will be posted on our website within the next week or two. Retail price is $2,950. A Carbon Cub spinner kit pre-cut to match the prop hub is available for $356. To order, please call 1-877-484-7865. Part numbers: GA-340-716 (for the CC340 or Lycoming engines with 7/16" hub bolts) or GA-340-816 (for Lycoming engines with 1/2" hub bolts)Note: This propeller is approved for use on Experimental aircraft with CC340 or Lycoming O-320/O-360 derivative engines only. Proper pitch setup does take time and a reasonable amount of flight testing; it is not an "instant" pitch adjustment.
    Hi
    Any figures available regarding cruise performance?
    Sounds good
    Alan
    Alan Maurer
    Carbon Cub #183
    Sarasota, FL

  3. #3
    Member armaurer's Avatar
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    Default Re: NEW! Ground Adjustable Composite Prop for Experimental Carbon Cub

    Quote Originally Posted by armaurer View Post
    Hi
    Any figures available regarding cruise performance?
    Sounds good
    Alan
    One other thought...........
    Looked at the WhirlWind Web Site...they make a light weight constant speed prop.........
    Could it be used on a Carbon Cub?
    Cheers
    Alan
    Alan Maurer
    Carbon Cub #183
    Sarasota, FL

  4. #4
    Senior Member Pete D's Avatar
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    Default Re: NEW! Ground Adjustable Composite Prop for Experimental Carbon Cub

    Alan,

    There is no provisions on the CC340 for any type of governor. Weight!

    I don't really have any cruise numbers for the WW. I can say it will be as good as or better than the Catto but exact numbers would depend on what pitch setting you have it set to. To explore the performance numbers for every possible pitch setting would be a huge flight test program. This is why it is offered as an option on EX and E-LSA aircraft at this time only.
    Last edited by Pete D; 03-22-2012 at 09:07 AM. Reason: Spelling
    Pete Dougherty
    R & D Shop Manager
    Cub Crafters Inc

  5. #5
    Member rlinford's Avatar
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    Default Re: NEW! Ground Adjustable Composite Prop for Experimental Carbon Cub

    Not sure why anyone would do this, maybe I'm missing something? I just bought a Catto climb prop for my EX for $2300. If this prop requires a fair amount of adjustment and flight testing every time you make an adjustment why not take the $600 you save by buying a fixed pitch prop and put it towards a second prop. Sounds a lot easier to change a prop than change the pitch of this. Probably lighter too and less components to break. $1700 more investment but sounds like a lot less work in the long run.

    Never owned a ground adjustable prop so like I said above, I may be missing something important. If you could just turn a screw and get a different pitch that would be sweet - but it does not sound that simple.

  6. #6
    Senior Member John Hodges's Avatar
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    Default Re: NEW! Ground Adjustable Composite Prop for Experimental Carbon Cub

    Maybe Whirlwind should weigh in on this.

  7. #7
    Junior Member Cubster's Avatar
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    Default Re: NEW! Ground Adjustable Composite Prop for Experimental Carbon Cub

    How much heavier is it over the Catto???

  8. #8
    Senior Member randylervold's Avatar
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    Default Re: NEW! Ground Adjustable Composite Prop for Experimental Carbon Cub

    Quote Originally Posted by Cubster View Post
    How much heavier is it over the Catto???
    Approximately 4 lbs heavier.
    Randy Lervold

  9. #9
    Senior Member Dan L's Avatar
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    Default Re: NEW! Ground Adjustable Composite Prop for Experimental Carbon Cub

    Quote Originally Posted by KatieB View Post
    . This prop but offers significantly marginally faster cruise speed .....
    Does that comment mean that cruise speed could be significantly faster or just marginally so depending on the pitch adjustment?

  10. #10
    Member armaurer's Avatar
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    Default Re: NEW! Ground Adjustable Composite Prop for Experimental Carbon Cub

    Quote Originally Posted by Dan L View Post
    Does that comment mean that cruise speed could be significantly faster or just marginally so depending on the pitch adjustment?
    Hi
    Has anyone tried out the WhirlWind Prop with different pitch settings to see how much faster it might cruise when set in an optimal way? Always tempting to go faster but five knots might not be worth the expense and work???
    Thanks
    Alan
    Alan Maurer
    Carbon Cub #183
    Sarasota, FL

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