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08-15-2014, 03:48 PM
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Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,118
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Quote:
Originally Posted by danny
Just wondering g how deep those cracks are. I'm really hoping they are just surface cracks since I have a new Whirlwind in the box waiting to go on an IO-360. My fingers are definitely crossed for you.
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I just ordered a new Whirlwind last week, this definitely has my attention.
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Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2020 dues paid 
N16GN flying 700 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, 430W
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now. 
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08-15-2014, 05:02 PM
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Join Date: Jan 2005
Location: LaVista, NE
Posts: 60
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There's a lot of Whirlwinds out there, not only on planes, but on air boats. I think they're a proven design and have a good product. Just posted to see if anyone else had the same issue. The 'crack' wasn't too deep, but it was more than just a surface thing. As was mentioned above, the leading edge is also cracked on the back side. So, there has to be some bending (to fatigue the metal) of some type happening. The question is why? I wouldn't get too bent out of shape if you bought one-nobody else seems to have had this issue, so it's probably me being 'special.'  But, I'd make sure to keep an eye on it. I asked the guy flying if he noticed it develop he said he really didn't look that close since it's a new prop. So...... We're not sure how long it took to get to the point it did.
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Chris Halfman
La Vista, NE
-7A, 300+ hours on the Hobbs, ECi O-360 185 hp, GA200L Whirlwind prop
Anything I post on here may not be the best way, the right way, the only way, or even an accepted way to do something, but it's how I did it. Use the information accordingly.
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08-15-2014, 05:39 PM
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Join Date: Sep 2006
Location: Townsend, Montana
Posts: 3,179
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Quote:
Originally Posted by airguy
I just ordered a new Whirlwind last week, this definitely has my attention.
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I believe you are getting a WW200R, aren't you?
Just a note for those watching this thread.....
The WW200RV is manufactured by Whirl Wind Aviation. Whirl Wind RV props
The GA200 prop in this post is from Whirlwind Propeller. Whirlwind propeller
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Retired Dam guy. Life is good.
Brian, N155BKsold but bought back.
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08-15-2014, 06:35 PM
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Join Date: Dec 2009
Location: Boulder, CO
Posts: 4,428
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Now that's confusing.
Dave
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08-15-2014, 06:38 PM
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Join Date: Jun 2010
Location: kansas
Posts: 9
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Am I wrong or did I read that Whirl Wind Propeller makes the blades for Whirl wind aviation ?
Doug
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08-15-2014, 07:30 PM
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Join Date: Aug 2010
Location: United States
Posts: 263
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This is what I learned at OSH when I spoke with one of the owners in the Titan/Whirl Wind booth on Saturday afternoon:
Titan Aircraft, the makers of the Titan T-51 mini mustang kits, wanted the Whirlwind constant speed props and the R&D side of the constant speed props, so Titan Aircraft purchased the constant speed side of Whirl Wind (their website shows the same Ohio address now for both Titan Aircraft and Whirl Wind Aviation).
The fixed pitch side of Whirl Wind remained with Whirl Wind Propellers (California).....the makers of the air boat props.
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Robert Kramar
Gilbert, Arizona - Vans RV-6A
- Bell 47 D-1 H-13 Sioux Army/Mash Helicopter - Fully Restored and Flying!
- Vans RV-4 (being upgraded to new panel, firewall, weldments and long gear legs)
Yearly VAF dues paid to date.
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08-15-2014, 08:58 PM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,514
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Quote:
Originally Posted by hydroguy2
I believe you are getting a WW200R, aren't you?
Just a note for those watching this thread.....
The WW200RV is manufactured by Whirl Wind Aviation. Whirl Wind RV props
The GA200 prop in this post is from Whirlwind Propeller. Whirlwind propeller |
Clarification: The CS prop blades are made by the same whirlwind propellor company (california) . The CS (mccauley) hubs are machined, assembled and sold with the blades by Whirlwind Aviation (ohio). I have been to the ohio factory, it is not speculation.
Nice factory tour, and information. https://www.youtube.com/watch?v=8cyycR356pQ
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Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
Last edited by BillL : 08-15-2014 at 09:03 PM.
Reason: added link
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08-15-2014, 09:05 PM
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Join Date: Aug 2010
Location: United States
Posts: 263
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Quote:
Originally Posted by BillL
Clarification: The CS prop blades are made by the same whirlwind propellor company (california) . The CS (mccauley) hubs are machined, assembled and sold with the blades by Whirlwind Aviation (ohio). I have been to the ohio factory, it is not speculation.
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Bill.....that makes sense to keep all the blade manufacturing in CA. Glad to know that. Thanks for the clarification.
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Robert Kramar
Gilbert, Arizona - Vans RV-6A
- Bell 47 D-1 H-13 Sioux Army/Mash Helicopter - Fully Restored and Flying!
- Vans RV-4 (being upgraded to new panel, firewall, weldments and long gear legs)
Yearly VAF dues paid to date.
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08-15-2014, 10:49 PM
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Join Date: Aug 2007
Location: Wichita Falls, TX
Posts: 2,182
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There are tons of WW props out there successfully flying without problems. This particular example of one GA version showing up with blade cracks appears at this point to be a unique, isolated example of one single failure. I would not be so hasty to suspect the product lineup of any systemic problem at this point as the numbers do not support such a thing. I highly suspect this is an oddball case of a weird, singular failure only and WW's engineers will surely discover what went wrong with this one. Still, it's always a smart plan to always keep a close eye on any prop make or model and do it as a part of every pre and post-flight inspection, no matter what brand or model since any kind of prop failure is a serious problem you definitely want to catch early, and on the ground.
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Neal Howard
Airplaneless once again...
Last edited by Neal@F14 : 08-15-2014 at 10:51 PM.
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08-15-2014, 10:57 PM
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Join Date: May 2008
Location: Brisbane Qld. Aust.
Posts: 2,271
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I have NO DATA to support this but as a hunch, having read a bit about props and harmonics and the effect of the EI's I would be once bitten twice shy unless the prop manufacturer comes out and clearly shows where they produced a defective set of blades.
I suspect the blades were not all faulty, although it is possible.
What worries me the most is the PMAG settings and the resulting peak cylinder pressures (read as the extreme forcing frequency amplitude) which when you watch crankshaft torsionals live, it is a scary thing.
If you wish to discuss this further via PM I am willing to chat rather than clog up this thread.
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David Brown
DYNON Authorised Dealer and Installer
The two best investments you can make, by any financial test, an EMS and APS!
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