Today's Message Index:
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1. 01:51 PM - Re: PIREP - CATTO Composite Prop (Robert Reed)
2. 05:28 PM - Re: PIREP - CATTO Composite Prop (Galin Hernandez)
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| Subject: | Re: PIREP - CATTO Composite Prop |
Galin,
I assume you were expecting about 2700 rpm at full throttle. Do you think the
slight reduction could be from new engine break in vs. the prop? The increase
in cruse speed it good to hear.
Bob
________________________________
From: Galin Hernandez <galinhdz@gmail.com>
Sent: Tuesday, December 2, 2014 7:59 PM
Subject: KIS-List: PIREP - CATTO Composite Prop
After my nose gear failure and prop strike I decided to replace my Sensenich Aluminum
propeller with a CATTO Composite propeller. I have now done the 5hrs of
flight testing and these are my impressions.
1 - The CATTO is beautifully built and machined piece of art. I had mine painted
white with the nickel leading edges, Copper colored tips (matches the tail number)
and Carbon Fiber Spinner. I love how it looks as can be seen in the attached
photo.
2 - The CATTO came in 19.8lbs lighter than the Sensenich propeller. This shifted
the CG 5/8" aft, still well within the CG limits of the airplane no matter how
I load it. This change in CG made all the difference in the world on landings.
I no longer run out of elevator authority on approach and can now softly ease
the nose gear on the runway. No more dropping nose. I actually made 3 "squeaker"
landings in a row. The good thing is that it did not change any other flight
characteristic I tested, specifically the stalls under different loading
configurations.
3 - Right now it looks like it might be pitched a little too much since I only
got 2,625RPMs at 7,000DA and full throttle. However I did pick up 5kts in cruise
and I don't have the nose wheel boot on which will add several more knots in
cruise speed. The climb isn't much different that the Sensenich.
4 - I also got an additional 8" clearance between the propeller and the ground
which is excellent for "rough" field operation.
5 - The propeller isn't as smooth as I thought it would be but I think I have it
incorrectly indexed and part of it might be the recently overhauled engine.
Once I have about 50hrs on the engine I will get it dynamically balanced and this
should make a big difference.
As I fly and test, I will post the results.
Message 2
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| Subject: | Re: PIREP - CATTO Composite Prop |
Not sure. After I have about 50hrs I can tell. However if it is pitched too
much then I will get an increase in cruise speed. I guess I just have to be
patient.
On Wed, Dec 3, 2014 at 4:51 PM, Robert Reed <robertr237@att.net> wrote:
> Galin,
>
> I assume you were expecting about 2700 rpm at full throttle. Do you think
> the slight reduction could be from new engine break in vs. the prop? The
> increase in cruse speed it good to hear.
>
> Bob
>
> *From:* Galin Hernandez <galinhdz@gmail.com>
> *To:* "kis-list@matronics.com" <kis-list@matronics.com>
> *Sent:* Tuesday, December 2, 2014 7:59 PM
> *Subject:* KIS-List: PIREP - CATTO Composite Prop
>
> After my nose gear failure and prop strike I decided to replace my
> Sensenich Aluminum propeller with a CATTO Composite propeller. I have now
> done the 5hrs of flight testing and these are my impressions.
>
> 1 - The CATTO is beautifully built and machined piece of art. I had mine
> painted white with the nickel leading edges, Copper colored tips (matches
> the tail number) and Carbon Fiber Spinner. I love how it looks as can be
> seen in the attached photo.
>
> 2 - The CATTO came in 19.8lbs lighter than the Sensenich propeller. This
> shifted the CG 5/8" aft, still well within the CG limits of the airplane no
> matter how I load it. This change in CG made all the difference in the
> world on landings. I no longer run out of elevator authority on approach
> and can now softly ease the nose gear on the runway. No more dropping
> nose. I actually made 3 "squeaker" landings in a row. The good thing is
> that it did not change any other flight characteristic I tested,
> specifically the stalls under different loading configurations.
>
> 3 - Right now it looks like it might be pitched a little too much since I
> only got 2,625RPMs at 7,000DA and full throttle. However I did pick up 5kts
> in cruise and I don't have the nose wheel boot on which will add several
> more knots in cruise speed. The climb isn't much different that the
> Sensenich.
>
> 4 - I also got an additional 8" clearance between the propeller and the
> ground which is excellent for "rough" field operation.
>
> 5 - The propeller isn't as smooth as I thought it would be but I think I
> have it incorrectly indexed and part of it might be the recently overhauled
> engine. Once I have about 50hrs on the engine I will get it dynamically
> balanced and this should make a big difference.
>
> As I fly and test, I will post the results.
>
>
> *
>
>
> *
>
>
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