Today's Message Index:
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1. 05:27 AM - Re: CATTCO PROPS 3 Vs 2 (rveighta@comcast.net)
2. 06:38 AM - Re: CATTCO PROPS 3 Vs 2 (FLYaDIVE)
Message 1
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| Subject: | Re: CATTCO PROPS 3 Vs 2 |
Barry, I installed a three blade Catto prop on my RV-8A back in 2003. I sol
d the plane last fall after 450 hours. The prop performed
great for me. The only problem with the 3 blade was that it made the cowl h
arder to remove than with a two blade prop.
Walt Shipley
----- Original Message -----
From: "FLYaDIVE" <flyadive@gmail.com>
Sent: Thursday, July 29, 2010 5:32:19 PM
Subject: RotaxEngines-List: CATTCO PROPS 3 Vs 2
Hello Gaggle:
=C2-
I am looking for some information on CATTCO PROPS.
=C2-
This is their web site:
=C2-
http://www.cattoprops.com/index.html
=C2-
Is anyone using their props?
=C2-
Info needed is:
Three Blade Prop Vs Two Blade Prop.
Is a 54" Pitch CATTCO equivalent to a 62" Pitch Sensinich?
Why is there so much of a difference in pitch call-out between the two?
I say this because a 54" is what was recommended / suggested Vs a 62".
I did some basic calculations and for the same engine and going from a two
blade to a three blade the pitch should be closer to a 60".
I do not want a climb prop - I want a cruse prop.
=C2-
Does anyone have a spread sheet program or a web site for doing calculation
s?
=C2-
=C2-
ANY IDEAS?
=C2-
Thanks Gaggle-
=C2-
============
==
Message 2
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| Subject: | Re: CATTCO PROPS 3 Vs 2 |
Rick:
Thank you for the post... As you say; is as I figured.
They all play their games to make their common product exclusive.
Thanks Rick,
Barry
On Thu, Jul 29, 2010 at 7:02 PM, Richard Girard <aslsa.rng@gmail.com> wrote:
> When it comes to prop carvers they are free to call out there measurements
> as they choose. One carver may chose to measure at 75% of diameter, another
> may choose 70%, one may choose to use a flat bottom airfoil section and use
> the bottom as the reference plane while another might use the true chord of
> the airfoil.
> People I know who buy carved props generally have a collection and some are
> reshaped more than once in the search for that perfect prop.
> When I was building a LongEZ I bought a Carver prop that was supposed to be
> just the ticket. It had been specially run through Don Bates' Prop Optimizer
> program by Bates himself. I sold it to a friend who mounted it on his O-235
> powered Varieze. He liked it, it was faster than the prop he was running but
> he got itchy for a little more performance and sent it back to Carver. The
> company had changed hands and the new guys worked it over pretty good
> because when Mike got it back his Varieze was instantly 40 MPH faster. Go
> figure.
> Craig Catto, Gary Hertzler, and others offer great products, but you may
> have to work with them to get exactly what you want. Just put it down to
> another aspect of your experiment.
>
> Rick Girard
>
> On Thu, Jul 29, 2010 at 4:32 PM, FLYaDIVE <flyadive@gmail.com> wrote:
>
>> Hello Gaggle:
>>
>> I am looking for some information on CATTCO PROPS.
>>
>> This is their web site:
>>
>> http://www.cattoprops.com/index.html
>>
>> Is anyone using their props?
>>
>> Info needed is:
>> Three Blade Prop Vs Two Blade Prop.
>> Is a 54" Pitch CATTCO equivalent to a 62" Pitch Sensinich?
>> Why is there so much of a difference in pitch call-out between the two?
>> I say this because a 54" is what was recommended / suggested Vs a 62".
>> I did some basic calculations and for the same engine and going from a two
>> blade to a three blade the pitch should be closer to a 60".
>> I do not want a climb prop - I want a cruse prop.
>>
>> Does anyone have a spread sheet program or a web site for doing
>> calculations?
>>
>>
>> ANY IDEAS?
>>
>> Thanks Gaggle-
>>
>> Barry
>>
>> *
>>
>> ist" target="_blank">http://www.matronics.com/Navigator?RotaxEngines-List
>> tp://forums.matronics.com
>> _blank">http://www.matronics.com/contribution
>> *
>>
>>
> *
>
> *
>
>
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