Catto prop was Re: REFLECTOR: Grand Rapids Engine Monitor

Scott Derrick scott at tnstaafl.net
Mon Sep 20 13:32:13 CDT 2004 

Dave,

If you see Chuck, tell him Scott Derrick says hi.  We were radar rats 
together at Oakland Center.

Why "don't do" Tahoe.  I fly into TVL quite a lot in my Std RG?  I was even 
foolish enough to give a 250 lb. guy a ride out of there(he was building a 
V), and I had 60 gallons of fuel and my travel tool kit on board!  And it 
was a pretty warm summer evening!  I think density was around 10,000.  Man 
you talk about using up some runway!  That was a lesson I'll never 
forget.  I have no problem going into TVL with me and the wife(she's a 
light weight) and baggage.  Though I restrict our full fuel departures to 
early morning.

MHV can give you some intermediate density's, but nothing like Bishop, 
Tahoe or my airfield GNT's.   I just thought you might want to see how she 
performs in the mountain west before twisting the prop anymore.

Scott


At 10:05 AM 9/20/2004, you wrote:
>Scott
>I do know Chuck. I haven't seen him for a few weeks but we have a good
>community of pilots here at Livermore.  I have been on the field since 1967
>so I know most of them.  Not all by name but most by sight.
>I go to the high desert now and then but I am not sure if I will before I
>change out the prop.  But if I do I'll let you know.  I go to Scaled
>Composites now and then and on a good hot day there you can get some good
>numbers.  But going into Tahoe I don't do.  But I did do Minden just last
>Saturday in the Cozy.  We had 40kt winds coming right down the run way.  No
>fun but I got it on the ground.  Had to hide behind a hangar for a hour
>before they subsided to get airborne again. Flying over to Columbia this
>morning to do a condition inspection on a EZ.
>But I'll keep you informed.
>----- Original Message -----
>From: "Scott Derrick" <scott at tnstaafl.net>
>To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
>Sent: Monday, September 20, 2004 6:34 AM
>Subject: Catto prop was Re: REFLECTOR: Grand Rapids Engine Monitor
>
>
> > Dave,
> >
> > I would have expected a higher static considering your cruise speed at
>2700
> > rpm.
> >
> > I'm certainly no fixed pitch prop expert but I think the only way to get
> > more speed on the top end is to go a higher pitch, which will sacrifice
> > some of your take off performance.   It does seem you could add a few
> > hundred feet to your take off without too much of a compromise in take off
> > ability.
> >
> > Do you have a high altitude airport you could try at gross weight to see
> > how this prop performs under worst case conditions before changing  to a
> > higher pitch?  Like South Lake Tahoe on a warm day?
> >
> > BTW,    You know Chuck Wahl at LVK, he just finished restoring his T28
>last
> > year?
> >
> > Scott
> >
> > At 08:41 PM 9/19/2004, you wrote:
> > >I have a XL/RG 1725 empty wt.  Aprox. 50gal. gas on take off.
> > >IO-540 260HP
> > >LVK is 400MSL
> > >Climbing out at 2400 RPM
> > >----- Original Message -----
> > >From: "Scott Derrick" <scott at tnstaafl.net>
> > >To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
> > >Sent: Sunday, September 19, 2004 4:03 PM
> > >Subject: Re: REFLECTOR: Grand Rapids Engine Monitor
> > >
> > >
> > > > What airframe/engine combo are you flying?
> > > >
> > > > What's your static RPM as you start to roll?
> > > >
> > > > What altitude are you flying out of?
> > > >
> > > > Scott
> > > >
> > > > At 02:35 PM 9/19/2004, you wrote:
> > > > >Got some food for thought.  I have been testing the new fixed pitch
>Catto
> > > > >prop and using the GRT. EFIS is great for this.  In the demo record
>mode
> > >I
> > > > >can get all the data and study it.  It doesn't come out as a
>printable
> > > > >spread sheet data but as play-back where you can watch as you flew
>it.  I
> > > > >can see right when I took off and the rate of climb and RPM's and
>MAP's I
> > > > >was putting out.
> > > > >
> > > > >As far as the prop goes it is doing a great job of take-off and climb
>but
> > > > >hurting a little on the top end.  I am seeing right around 172kts
>true at
> > > > >2700rpm.  Craig says we can work on this to improve.  It is very
>smooth
> > >and
> > > > >quite.  I think some of the quietness comes from being two inches
>further
> > > > >back.  But right now it is a real pleasure to fly in front of.
> > > > >
> > > > >So related to using the GRT system it is great. Once you have a
>handle on
> > > > >how to pull up different minus.  I am still having problems with the
>HIS,
> > > > >soon to master.
> > > > >
> > > > >----- Original Message -----
> > > > >From: "Scott Derrick" <scott at tnstaafl.net>
> > > > >To: <amillin at kal-soft.com>; "Velocity Aircraft Owners and Builders
>list"
> > > > ><reflector at tvbf.org>
> > > > >Sent: Sunday, September 19, 2004 9:36 AM
> > > > >Subject: Re: REFLECTOR: Grand Rapids Engine Monitor
> > > > >
> > > > >
> > > > > > Andy,
> > > > > >
> > > > > > thanks for presenting my situation to GRT.
> > > > > >
> > > > > > I'll give Todd a call.
> > > > > >
> > > > > > I'm also waiting on a promised reply from Dynon. Their new Engine
> > >Monitor
> > > > > > is due to be released soon.  With a two DA10's you can have an
>EFIS
> > >and
> > > > > > engine monitor.  And pick your display for pilot and co-pilot
> > >position.
> > > > > >
> > > > > > Scott
> > > > > >
> > > > > > At 12:36 PM 9/16/2004, you wrote:
> > > > > > >Scott,
> > > > > > >
> > > > > > >Greg and Todd from Grand Rapids came down to Kalamazoo and
> > >demonstrated
> > > > > > >their PFD and EFIS systems.
> > > > > > >
> > > > > > >I asked them about the configuration you want to put in.  The
>answer
> > >was
> > > > > > >"Yes"  They must not have understood what you were trying to do.
> > > > > > >
> > > > > > >If you get the EIS with the Graphical display, you get 8 aux
>inputs.
> > > > > > >
> > > > > > >The fuel flow does not use an aux input.  The fuel level can only
>be
> > > > > > >displayed on the graphical display.  You will be right at 8 with
>the
> > > > > > >configuration you wanted.
> > > > > > >
> > > > > > >Manifold Pressure (1 aux)
> > > > > > >Fuel Pressure (1 aux)
> > > > > > >Fuel Level (2 aux)
> > > > > > >Ammeter (1 aux)
> > > > > > >Vacuum (1 aux)
> > > > > > >TIT (2 aux)
> > > > > > >
> > > > > > >This is with the Graphical display.  It will not work with just
>the
> > >EIS.
> > > > > > >
> > > > > > >Give them a call and ask for Todd.
> > > > > > >
> > > > > > >Best,
> > > > > > >
> > > > > > >Andy
> > > > > > >
> > > > > > >
> > > > > > > >-----Original Message-----
> > > > > > > >From: reflector-bounces at tvbf.org
> > >[mailto:reflector-bounces at tvbf.org]On
> > > > > > > >Behalf Of Scott Derrick
> > > > > > > >Sent: Thursday, August 19, 2004 11:06 AM
> > > > > > > >To: Velocity Aircraft Owners and Builders list;
>reflector at tvbf.org
> > > > > > > >Subject: REFLECTOR: Grand Rapids Engine Monitor
> > > > > > > >
> > > > > > > >
> > > > > > > >I was seriously considering swapping my 4 cylinder Vision for
>GRT's
> > >6
> > > > > > > >cyl graphical Engine monitor.  I looked over the specs and
>realized
> > >the
> > > > > > > >aux inputs were limited and the standard ones were wasted and
>not
> > > > > > > >changeable items like Carb temp and OAT.
> > > > > > > >
> > > > > > > >I asked their tech support about how I could make it work  with
>my
> > > > > > > >instrumentation needs.  They replied that I would just have to
>do
> > > > > > > >without TIT or some of the other items. Are they serious? They
> > > > > > > >considered them not really needed like fuel flow or manifold
> > > > > > > >pressure???  While I haven't completely crossed them off my
>list of
> > > > > > > >possible's I think their product is definitely oriented towards
>the
> > > > > > > >ultralight  and wheenie simple engine market...
> > > > > > > >
> > > > > > > >Why would they force me to display Carb heat when most new
>engines
> > >are
> > > > > > > >injected? OAT is nice but way down on my list for an engine
> > >monitor.
> > > > > > > >
> > > > > > > >here was my request.
> > > > > > > >
> > > > > > > >  > I'm in the process of upgrading to a TSIO520 and will need
>to
> > > > > > > > replace
> > > > > > >the
> > > > > > > >  > engine monitor I have now.
> > > > > > > >  >
> > > > > > > >  > I like the 6000 combined with the graphical display.
> > > > > > > >  >
> > > > > > > >  > However I can't see how I can display everything I need.
> > > > > > > >  >
> > > > > > > >  > Here's your built in functions
> > > > > > > >  > 6  Exhaust Gas Temperatures
> > > > > > > >  > 6 Cylinder Head Temperatures
> > > > > > > >  > Tachometer
> > > > > > > >  > Oil Temperature
> > > > > > > >  > Oil Pressure
> > > > > > > >  > Outside Air Temperature( I have one of these already, can
>it be
> > > > > > > > used
> > > > > > >for
> > > > > > > >something else?)
> > > > > > > >  > Voltmeter
> > > > > > > >  > Carburetor Temperature  ( I won't need this, can I use it
>for
> > > > > > > >something
> > > > > > > >  > else like TIT?)
> > > > > > > >  >
> > > > > > > >  >
> > > > > > > >  > Heres what I need to add ( 8 items)
> > > > > > > >  > Manifold Pressure ( I'm surprised this isn't in the built
>in
> > > > >functions)
> > > > > > > >  > Fuel Pressure(same with this one)
> > > > > > > >  > Fuel Flow( and this one two)
> > > > > > > >  > 2 Fuel Level  Gages(using capacitive sending units)
> > > > > > > >  > Tubine Inlet Temp (TIT)
> > > > > > > >  > Ammeter(this should be standard)
> > > > > > > >  > Vacuum
> > > > > > > >
> > > > > > > >"Those who sacrifice freedom to get security, deserve neither."
> > > > > > > >- Benjamin Franklin
> > > > > > > >
> > > > > > > >
> > > > > > > >_______________________________________________
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> > > > > > > >
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> > > > > > > >
> > > > > > > >_______________________________________________
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> > > > > > > >
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> > > > > > >
> > > > > > >
> > > > > > >"Those who sacrifice freedom to get security, deserve neither."
> > > > > > >- Benjamin Franklin
> > > > > > >
> > > > > > >_______________________________________________
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> > > > > > >
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> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >_______________________________________________
> > > > > > >To change your email address, visit
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> > > > > >
> > > > > >
> > > > > > "Those who sacrifice freedom to get security, deserve neither."
> > > > > > - Benjamin Franklin
> > > > > >
> > > > > > _______________________________________________
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> > > > > >
> > > > >
> > > > >
> > > > >
> > > > >_______________________________________________
> > > > >To change your email address, visit
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> > > > >
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> > > >
> > > >
> > > > "Those who sacrifice freedom to get security, deserve neither."
> > > > - Benjamin Franklin
> > > >
> > > > _______________________________________________
> > > > To change your email address, visit
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> > > >
> > >
> > >
> > >
> > >_______________________________________________
> > >To change your email address, visit
> > >http://www.tvbf.org/mailman/listinfo/reflector
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> >
> >
> > "Those who sacrifice freedom to get security, deserve neither."
> > - Benjamin Franklin
> >
> > _______________________________________________
> > To change your email address, visit
>http://www.tvbf.org/mailman/listinfo/reflector
> >
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> >
>
>
>
>_______________________________________________
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"Those who sacrifice freedom to get security, deserve neither."
- Benjamin Franklin

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