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05-23-2009, 03:19 PM
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Join Date: Jul 2006
Location: near Harrogate, England
Posts: 391
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Hartzel F7497 prop and Superior IO 360 combo
Although the 7497 was very firmly recommended to me at the time I bought my prop and engine, the only TCDS from Hartzell I can find is for the O360 and states that there has been no aerobatic testing. The Light Aircraft Association here in the UK are giving me a hard time about this, so in hope, can someone please point me to an updated TCDS or alternatively some other documentation that the combo is safe, works and is fine for aeros?
Many thanks
Chris Mitchell
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05-23-2009, 05:11 PM
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Join Date: Jul 2006
Location: Corvallis Oregon
Posts: 3,547
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Well
Mine hasn't fallen off yet..  |
05-24-2009, 02:52 PM
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Join Date: Dec 2006
Location: Carp, Ont
Posts: 347
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No problem
Seems to work fine on mine too!
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05-24-2009, 03:25 PM
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Join Date: Jul 2006
Location: near Harrogate, England
Posts: 391
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I'm delighted....
... for you guys, really I am.
But does anyone have any documentation they can share with me??
Thanks
C
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05-24-2009, 04:55 PM
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Join Date: Aug 2005
Location: Pasadena CA
Posts: 2,484
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For what do they need aerobatic testing? The 7666 very famously fails under regular aerobatic loading. I don't think you'll find anything on this, because the prop wasn't designed for acro....
__________________
Stephen Samuelian, CFII, A&P IA, CTO
RV4 wing in Jig @ KPOC
RV7 emp built
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05-30-2009, 07:37 AM
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Join Date: Aug 2008
Location: USA
Posts: 100
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Quote:
Originally Posted by osxuser
For what do they need aerobatic testing? The 7666 very famously fails under regular aerobatic loading. I don't think you'll find anything on this, because the prop wasn't designed for acro....
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Interesting...the Super Decathlon has a Hartzell 7666 and is certified fully aerobatic...
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-Tony
Cheyenne WY/ Iraq
Private pilot...still in research stage for a -8
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05-30-2009, 09:08 AM
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Join Date: Sep 2005
Location: Dothan, Alabama
Posts: 1,487
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Chris, I sent you an email.
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Alton DeWeese
N526RV RV7A Tip Up, IO360 180 W/Hartzel BA prop.
Flying ~950 hours since Aug 2010
N4IDH
Construction Log
?The secret of getting ahead is getting started. The secret of getting started is breaking your complex overwhelming tasks into small manageable tasks, and then starting on the first one.?
?Mark Twain
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05-31-2009, 09:30 AM
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Join Date: Aug 2005
Location: Pasadena CA
Posts: 2,484
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Quote:
Originally Posted by wickedsprint
Interesting...the Super Decathlon has a Hartzell 7666 and is certified fully aerobatic...
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Yep, on the 3rd AD though... :/
Also aerobatic loading is what sparked the AD that now all of us have to comply with on the hubs. 
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Stephen Samuelian, CFII, A&P IA, CTO
RV4 wing in Jig @ KPOC
RV7 emp built
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05-31-2009, 12:53 PM
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Join Date: Aug 2008
Location: USA
Posts: 100
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I was wondering if your examples were from the Super-D
__________________
-Tony
Cheyenne WY/ Iraq
Private pilot...still in research stage for a -8
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06-01-2009, 01:07 AM
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Join Date: Aug 2005
Location: Pasadena CA
Posts: 2,484
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The ones I have heard of were Harmon Rockets.... But I believe a few Decathlons and Supers have cracked the old and especially the -A hubs. The -A hubs were considered to be the most dangerous, because there was no grease leakage or external indicators before the blade left... There was an AD on the Aerobatic application long before the general application, but I'm not sure that a prop is specifically 'approved' for aerobatics...? Obviously a LOT of props are used in those applications.
__________________
Stephen Samuelian, CFII, A&P IA, CTO
RV4 wing in Jig @ KPOC
RV7 emp built
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