Today's Message Index:
----------------------
1. 06:47 AM - Re: Fixed Pitch prop on an IO520 (Scott Derrick)
2. 06:52 AM - Re: Fixed Pitch prop on an IO520 (Scott Derrick)
3. 08:58 AM - Re: Fixed Pitch prop on an IO520 (flyv35b)
4. 03:30 PM - Re: Fixed Pitch prop on an IO520 (Scott Derrick)
Message 1
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| Subject: | Re: Fixed Pitch prop on an IO520 |
--> Engines-List message posted by: Scott Derrick <scott@tnstaafl.net>
At 08:10 PM 7/24/2004, you wrote:
>--> Engines-List message posted by: "flyv35b" <flyv35b@ashcreekwireless.com>
>
> > Anybody know what I need to do to convert an IO520 set up for a constant
> > speed prop to a fixed pitch prop?
> >
> > I looked at TCM's website, its useless.
>
>Why on earth would you want to? What kind of plane are you putting the
>engine in?
>I doubt if it has ever been done!
>
>Cliff A&P/IA
Is done all the time in the fast glass airplanes and racers... Racers may
do it because a CS prop is always a compromise between a climb and a cruise
airfoil, whereas the fixed pitch cruise prop is optimized for cruise
speed. A fixed pitch cruise(fast) prop will always beat a cs prop in high
end performance.
Scott
"Those who sacrifice freedom to get security, deserve neither."
- Benjamin Franklin
Message 2
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| Subject: | Re: Fixed Pitch prop on an IO520 |
--> Engines-List message posted by: Scott Derrick <scott@tnstaafl.net>
At 09:47 PM 7/24/2004, you wrote:
>--> Engines-List message posted by: LessDragProd@aol.com
>
>Light weight propellers can bring harmonics in the accessory case gears into
>the normal operating range.
>
>I suggest you talk to the engine manufacturer's engineering department to see
>if there might be a problem with your particular engine.
>
>Jim Ayers
I've been told that a light weight composite prop is the best prop you can
run on any engine. If balanced It doesn't generate much of any vibration
and is fantastic at absorbing the vibrations generated by the engine?
Its the big aluminum props that are great at mimicking tuning forks and
setting up destructive harmonics.
Its been my experience that TCM and Lycoming don't like to talk to
individuals about experimental installations. Unless your a high roller
that may buy or sell lots of engines.
Scott
"Those who sacrifice freedom to get security, deserve neither."
- Benjamin Franklin
Message 3
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| Subject: | Re: Fixed Pitch prop on an IO520 |
--> Engines-List message posted by: "flyv35b" <flyv35b@ashcreekwireless.com>
> Is done all the time in the fast glass airplanes and racers... Racers
may
> do it because a CS prop is always a compromise between a climb and a
cruise
> airfoil, whereas the fixed pitch cruise prop is optimized for cruise
> speed. A fixed pitch cruise(fast) prop will always beat a cs prop in
high
> end performance.
>
> Scott
I understand. But you still didn't answer my question about what kind of
plane your and planning on installing this engine and fixed pitch prop in.
Cliff
----- Original Message -----
From: "Scott Derrick" <scott@tnstaafl.net>
Subject: Re: Engines-List: Fixed Pitch prop on an IO520
> --> Engines-List message posted by: Scott Derrick <scott@tnstaafl.net>
>
> At 08:10 PM 7/24/2004, you wrote:
> >--> Engines-List message posted by: "flyv35b"
<flyv35b@ashcreekwireless.com>
> >
> > > Anybody know what I need to do to convert an IO520 set up for a
constant
> > > speed prop to a fixed pitch prop?
> > >
> > > I looked at TCM's website, its useless.
> >
> >Why on earth would you want to? What kind of plane are you putting the
> >engine in?
> >I doubt if it has ever been done!
> >
> >Cliff A&P/IA
>
> Is done all the time in the fast glass airplanes and racers... Racers
may
> do it because a CS prop is always a compromise between a climb and a
cruise
> airfoil, whereas the fixed pitch cruise prop is optimized for cruise
> speed. A fixed pitch cruise(fast) prop will always beat a cs prop in
high
> end performance.
>
> Scott
>
>
> "Those who sacrifice freedom to get security, deserve neither."
> - Benjamin Franklin
>
>
Message 4
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| Subject: | Re: Fixed Pitch prop on an IO520 |
--> Engines-List message posted by: Scott Derrick <scott@tnstaafl.net>
Std Velocity RG
Has a IO360 in it now..
Scott
At 09:58 AM 7/25/2004, you wrote:
>--> Engines-List message posted by: "flyv35b" <flyv35b@ashcreekwireless.com>
>
> > Is done all the time in the fast glass airplanes and racers... Racers
>may
> > do it because a CS prop is always a compromise between a climb and a
>cruise
> > airfoil, whereas the fixed pitch cruise prop is optimized for cruise
> > speed. A fixed pitch cruise(fast) prop will always beat a cs prop in
>high
> > end performance.
> >
> > Scott
>
>I understand. But you still didn't answer my question about what kind of
>plane your and planning on installing this engine and fixed pitch prop in.
>
>Cliff
>----- Original Message -----
>From: "Scott Derrick" <scott@tnstaafl.net>
>To: <engines-list@matronics.com>
>Subject: Re: Engines-List: Fixed Pitch prop on an IO520
>
>
> > --> Engines-List message posted by: Scott Derrick <scott@tnstaafl.net>
> >
> > At 08:10 PM 7/24/2004, you wrote:
> > >--> Engines-List message posted by: "flyv35b"
><flyv35b@ashcreekwireless.com>
> > >
> > > > Anybody know what I need to do to convert an IO520 set up for a
>constant
> > > > speed prop to a fixed pitch prop?
> > > >
> > > > I looked at TCM's website, its useless.
> > >
> > >Why on earth would you want to? What kind of plane are you putting the
> > >engine in?
> > >I doubt if it has ever been done!
> > >
> > >Cliff A&P/IA
> >
> > Is done all the time in the fast glass airplanes and racers... Racers
>may
> > do it because a CS prop is always a compromise between a climb and a
>cruise
> > airfoil, whereas the fixed pitch cruise prop is optimized for cruise
> > speed. A fixed pitch cruise(fast) prop will always beat a cs prop in
>high
> > end performance.
> >
> > Scott
> >
> >
> > "Those who sacrifice freedom to get security, deserve neither."
> > - Benjamin Franklin
> >
> >
>
>
"Those who sacrifice freedom to get security, deserve neither."
- Benjamin Franklin
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